CA1312862C - Erythromycin derivative and process for preparing the same - Google Patents
Erythromycin derivative and process for preparing the sameInfo
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- CA1312862C CA1312862C CA000516880A CA516880A CA1312862C CA 1312862 C CA1312862 C CA 1312862C CA 000516880 A CA000516880 A CA 000516880A CA 516880 A CA516880 A CA 516880A CA 1312862 C CA1312862 C CA 1312862C
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- anhydroerythromycin
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H17/00—Compounds containing heterocyclic radicals directly attached to hetero atoms of saccharide radicals
- C07H17/04—Heterocyclic radicals containing only oxygen as ring hetero atoms
- C07H17/08—Hetero rings containing eight or more ring members, e.g. erythromycins
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Abstract
TITLE: ERYTHROMYCIN DERIVATIVE AND PROCESS FOR
THE SAME
Abstract of the Disclosure Disclosed are novel erythromycin derivatives, or salts thereof, represented by the following general formula:
and processes for preparing the same.
The erythromycin derivatives described above have an excellent effect of stimulating the gastrointestinal contractile motion and have low toxicity, and the prepara-tions containing these compounds can be advantageously used as digestive tract contractile motion stimulants.
THE SAME
Abstract of the Disclosure Disclosed are novel erythromycin derivatives, or salts thereof, represented by the following general formula:
and processes for preparing the same.
The erythromycin derivatives described above have an excellent effect of stimulating the gastrointestinal contractile motion and have low toxicity, and the prepara-tions containing these compounds can be advantageously used as digestive tract contractile motion stimulants.
Description
~128~
ERYTHROMYCIN DERIVATIVE AND PROCESS FOR PREPARING
THE SAME
BACKGROUND OF T~E INVENTION
(1) Technical Field The present invention relates to erythromycin derivatives and salts thereof useful as stimulants for contractlve motion of the digestive tract, exhibiting action for stimulating contractive motion of the digestive tract of 1~ mammals, and also to processes for producing the same.
ERYTHROMYCIN DERIVATIVE AND PROCESS FOR PREPARING
THE SAME
BACKGROUND OF T~E INVENTION
(1) Technical Field The present invention relates to erythromycin derivatives and salts thereof useful as stimulants for contractlve motion of the digestive tract, exhibiting action for stimulating contractive motion of the digestive tract of 1~ mammals, and also to processes for producing the same.
(2) Background Information The digestive tract consists of the stomach, the duodenum, the small intestine etc~, and plays an important role in the digestion of food taken from the mouth. The contractive motion of the digestive tract is essential in order to perform the digestion smoothly. In a healthy man, the autonomous nerve system and digestive tract hormones function effectively to induce contraction of the digestive tract not only immediately after the intake of foods but also in a state where the digestive tract is empty, when such contraction has been considered absent. The movement in such empty digestive tract is transmitted from the stomach to the duodenum and to the small intestine, and plays an important role cleaning the digestive tract, ~hus preparing for next intake of foods ~Z. Itoh, "Iden", 33, 29, 1979)~
A stimulant for contraction of the digestive tract is expected to induce a normal movement of the digestive tract, in a human with weakened function of the digestive tract, thereby a healthy body being maintained.
Motilin is already known as a digestive tract hormone for stimulating the contraction of the digestive ~ract. This substance is a peptide, consisting of 22 amino acids and extracted by J. C. Brown in 1966 from the mucous membrane of a pig duodenum (J. C. Brown et al., Gastroenterology, 50, 333, 1966), and is already synthesized chemically (E. Wunsch et al., Zeitschrift fur Naturforsch, ~
28c, 235, 19730. J
However the supply of motilin by extraction from J
natural substance or by chemical synthesis is not sufficient, and has not been possible in a large amount.
SUMMARY OF THE INVENTION
In the course of a survey for providing a substance capable of stimulating the contraction of the digestive tract and adapted for a large supply, the present inventors have synthesized various derivatives from antibiotic erythromycin A, B, C, D and F and have found that said derivatives have a strong stimulating effect on the contraction of the digestive tract.
Based on this finding, the present inventors have made intensive efforts and have reached the present invention.
The present invention provides:
(1) a compound, or a salt thereof, represented by the general formula:
:, ~ 2 8 ~ ~
A stimulant for contraction of the digestive tract is expected to induce a normal movement of the digestive tract, in a human with weakened function of the digestive tract, thereby a healthy body being maintained.
Motilin is already known as a digestive tract hormone for stimulating the contraction of the digestive ~ract. This substance is a peptide, consisting of 22 amino acids and extracted by J. C. Brown in 1966 from the mucous membrane of a pig duodenum (J. C. Brown et al., Gastroenterology, 50, 333, 1966), and is already synthesized chemically (E. Wunsch et al., Zeitschrift fur Naturforsch, ~
28c, 235, 19730. J
However the supply of motilin by extraction from J
natural substance or by chemical synthesis is not sufficient, and has not been possible in a large amount.
SUMMARY OF THE INVENTION
In the course of a survey for providing a substance capable of stimulating the contraction of the digestive tract and adapted for a large supply, the present inventors have synthesized various derivatives from antibiotic erythromycin A, B, C, D and F and have found that said derivatives have a strong stimulating effect on the contraction of the digestive tract.
Based on this finding, the present inventors have made intensive efforts and have reached the present invention.
The present invention provides:
(1) a compound, or a salt thereof, represented by the general formula:
:, ~ 2 8 ~ ~
3 275~0-11 1 ~
R ~CH3 H 3 ~'~~C H 3 Z
C~3 (wherein 5 ~; Rl is a hydro~en atom, !~
a C1_5 alkanoyl radieal, a C7 11 aroyl radieal, a C1 6 alkylsulfonyl radieal, a di-C1 6 alkyloxyphosphoryl radieal, or a di-C6 10 aryloxyphosphoryl radical;
R2 is a hydrogen atom, : a C1 ~ alkanoyl radieal whieh is unsubsti~uted or substituted by C1 3 alkoxyearbonyl radieal, a C7 11 aroyl radical, a C1 6 alkylsulfonyl radieal, a C6 12 arylsulfonyl radieal, a C7 20 aralkylsul~onyl radieal, or L~
....
~28~
R ~CH3 H 3 ~'~~C H 3 Z
C~3 (wherein 5 ~; Rl is a hydro~en atom, !~
a C1_5 alkanoyl radieal, a C7 11 aroyl radieal, a C1 6 alkylsulfonyl radieal, a di-C1 6 alkyloxyphosphoryl radieal, or a di-C6 10 aryloxyphosphoryl radical;
R2 is a hydrogen atom, : a C1 ~ alkanoyl radieal whieh is unsubsti~uted or substituted by C1 3 alkoxyearbonyl radieal, a C7 11 aroyl radical, a C1 6 alkylsulfonyl radieal, a C6 12 arylsulfonyl radieal, a C7 20 aralkylsul~onyl radieal, or L~
....
~28~
a Cl 3 alkyl radical which is unsubstituted or substituted by C2 6 alkoxyalkoxy radical;
Z stancls for the formula:
~ / CH
R50 oR6 [in which R5 is:
a hydrogen atom, a Cl 6alkanoyl radical, a C7 11 aroyl radical, a Cl 6 alkylsulfonyl radical, a C6-12 arYlSUlfonyl radical~
a C7_20 aralkylsulfonyl radical, or a Cl 3 alkyl radical which is unsubstituted or substituted by a Cl 3 alkoxy radical;
and R is:
a hydrogen atom, a Cl 6 alkanoyl radical, or a Cl 3 alkyl radical which is unsubstituted or substituted by Cl 3 alkylthio radical], ~1 1 1 2(~ C H
H O H
1 j)~2 0~0 1 3 ~
275~0-11 lin which Y stands for the formula B-R8 (wherein R8 stands for C6 10 aryl radical), or ~C=O, iS=O, ~C-S, or the formula:
~C \R10 (wherein each of R9 and R10, which may be the same or different, is a hydrogen atom or a Cl 6 alkyl radical)];
Ra stands for the formula:
/Rb -N \ Rc [in which Rb is a hydrogen atom or a Cl 6 alkyl radical which is un~ubstituted or substituted by a hydroxyl group and Rc i5 a hydrogen atom, a C2_6 alkenyl radical, a C2 6 alkynyl radical, or a C2 6 alkyl radical which is unsubstituted or substituted ~y a hydroxyl radical;
or Rb and Rc together with the nitrogen atom to which they are attached form a C3 6 cyclic alkylamino radical] or ~ Rd N+ Re X
\Rf [in which Rd is a Cl 6 alkyl radical, Re and Rf, which may be the same or different, are each a Cl 6 alkyl radical which is unsubsti~uted or substituted by a sub~tituent selected from the group consisting of hydroxyl, carboxyl, cyano, halogen, C3 5 cycloalkyl and Cl 3 alkoxycarbonyl; a C2 6 alkenyl radical; or a C2 ~ alkynyl radical; or Re and Rf together with the nitrogen a~om to which they are attached form a C3 6 cyclic alkylamino radical;
D-... .
~128~
6 275~0-11 and X stands for a halogen anion]; and Rll and R12 each represent a hydrogen atom or both taken together form a chemical bond;
with the proviso that Y is not >C=O, when Ra i5 a trimethylammonio radical, ~11 and R12 taken together form a chemical bond, and each of Rl and R2 is a hydrogen atom);
(2~ a process for preparing the compound ~1), which comprises reacting a compound represented by the following formula:
R 1~ CH3 Ra C H ~ ~ ~ ~ [ ~ ]
2 ;;~3 U C H ~
1H3 ~o~OH
~H3 (wherein Rll, R12 and Ra have the same meanings as defined above;
and Z" stands for the formula ~ CH3 or OH OH
> 11 12( CH3, provided that one or more reactive groups which OH H
are not desired to be reacted during the reaction may be protected), with an acylating agent, an alkylating agent, a boronating agent, a (thio)carbonating agent, a sulfinylating agent or a ketalyzing agent, followed by deprotection, if necessary;
~3) a process for preparing a compound represented by the following formula or a salt thereof:
D
.
~3128~
7 275~0-11 CH~ ~ ~2 ~ ~ [4]
~ ~1 ~ R 2 (wherein Z''' i8 defined hereinunder and Rl, R2 and Ra have the same meanings as defined above, ~namely, a compound of the formula (1) wherein Rll and R12 together form a chemical bond, except that Z has the meaning of Z''',], which comprises treating a compound of the following formula or a salt thereof under an acidic condition: CH
C ~ ¦ oR2 (wherein Rl, R2 and Ra have the same meanings as defined above;
Z''' stands for the formula > 5 ~ 6 3 [wherein R5 and R6 have the same meanings as defined above], the formula > 11 12~ CH3 or the formula ~ lwherein Y has the same meaning as defined above], with proviso that each of and R2 is other than a hydrogen atom and each of R5 and R6 is other than a hydrogen atom, or Y is not -0, when Ra is a trimethylammonio radical~; and D
`
:
~3128~
(4) a process for preparing a compound represented by the formula: 11 C i l 3 ;~3~ U~
C/> ~\ I CH~ ~ 6 (wherein Z, R , R r R and R12 have the same meanings are a~
defined above, and Ra stands for the formula -N~Rc or the formula ~N \R~ X lwherein Rd, Re and Rf are as defined above, provided R
that Rc is not a hydrogen atom and Re and Rf do not together form a cyclic alkylamino], with the further proviso that Y is not >=0, when Ra is a trimethylammonio radical, R11 and R12 taken together form a chemical bond, each of Rl and R2 is a hydrogen atom3 D
~128~
9 275~0-11 Rll CH3 ~o ~ ~ ~ CH3 ~ ~ ~ `C~ [53 CH~ ~ ~ CH3 oR2 G~3 (wherein Z, Rl, R2, Rll and R12 have the same meanings as defined above, and Rg stands for the formula -NH-Rb (wherein Rb has the same meaning as defined above) or the formula -N/Re (wherein Rd and R have the same meanings as defined above) ~o N-alkylation, N-alkenylation or N-alkynylation.
The foregoing compounds (4) and (6) are included in the compound (1).
DESCRIPTION OF THE PREF~RRED EMBODIMENTS
Rl in the foregoing formula can be an acyl radical such a~ a carboxylic acyl, a sulfonic acyl or a phosphoric acyl.
~ 2 or R5 in the foregoing formula can be an acyl radical such as a carboxylic acyl or a sulfonic acyl.
The carboxylic acyl is an acyl radical derived from a monocarboxylic acid or a polycarboxylic acid.
~ 3~2~
275~
The monocarboxylic acyl radical includes an alkyanoyl radical containing 1 to 6 carbon atoms (such as formyl, acetyl, propionyl, butyryl, isobutyryl, valeryl, isovaleryl, hexanoyl and pivaloyl) and an aroyl radical containing 7 to 11 carbon atoms ~such as benzoyl, naphthoyl and the like).
The polycarboxylic acyl radical includes a dicarboxylic acyl radical containing 2 to 6 carbon atoms and one carboxyl group being esterified with an alkyl group having 1 to 3 carbon atoms sueh as methyl, ethyl or propyl. The dicarboxylic acyl radical is for @xample, oxalo, carboxyacetyl, 3-~arboxypropionyl, etc. The dicarboxylic acyl radical may alternatively be considered as the alkanoyl radical mentioned above but being substituted by a Cl 3 alkoxycarbonyl radlcal.
The sulfonic acyl is an acyl radical derived from a sul~onic acid, represented for example by the general formula R13So2-, wherein R13 stands for a Cl 6alkyl, C6 12aryl or C7 20 aralkyl radical. The alkyl radical contains 1 to 6 carbon atoms, and may be linear or branched. Examples of the alkyl radical are methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl and n-hexyl. ~xamples of the aryl radical include phenyl and naphthyl. The aryl radical may have a substituent and examples of the substituent include a lower alkyl radical (such as methyl), a lower alkoxy radical Isuch as methoxy), a halogen atom tsuch as fluorine, chlorine and bromine), a nitro radical, a carboxy radical, etc.
An example of the aralkyl radical is 2-phenethyl. The phosphoric acyl is an acyl radical derived from phosphoric acid, represented, for example, by the general formula (R150)2Po-, ~D
~28~
11 ~75 wherein R15 stands for a Cl_6 alkyl or C7_11 aryl radical-~ xamples of the alkyl radicals include methyl, ethyl, propyl, isopropyl, butyl, isohutyl, sec-butyl, tert-butyl, n-pentyl and n-hexyl. Examples of the aryl radicals include phenSJl~
tolyl and naphthyl. The substituent in the acyl radical which may be substituted, represented by R2 can be, for example, an alkoxy As the alkoxy radical, there can be mentioned radicals containing 1 to ~ carbon atoms, such as methoxy, ethoxy, propoxy and butoxy.
The Cl 6 alkanoyl radical represented by R6 in the foregoing formula is such as formyl, acetyl, propionyl, butyryl, isobutyryl, valeryl, isovaleryl and hexanoyl.
In the foregoing formula, the alkyl radical in the alkyl radical which may be substituted, represented by R2 or R5 contains 1 to 3 carbon atoms, and can be linear or branched. Examples of the alkyl radicals include methyl, ethyl, propyl and isopropyl.
The alkyl group may have a substituent which is preferably an alkoxy radical containing 1 to 3 carbon atoms or an alkoxyalkoxy radical containing 2 to 6 carbon atoms, and examples of the alkoxy radicals include methoxy, ethoxy and propoxy, while examples of the alkoxyalkoxy radicals includs methoxyethoxy, methoxypropoxy, methoxybutoxy, methoxypentyloxy, ethoxyethoxy, ethoxypropoxy, ethoxybutoxy and proxypropoxy.
In the foregoing formula, the alkyl radical which is repre~ented by R6 and may have an alkylthio substituent can be methyl. The alkylthio as the substituent may include a radical represented by the general formula R16S-, wherein R16 a lower D
131 28~2 12 27~
alkyl radical. The lower alkyl radical preferably contains 1 to 3 carbon atoms, such as methyl, ethyl or propyl.
In the foregoing formula, the aryl radical represen~ed by R8 is for example, phenyl, tolyl or naphthyl.
In the foregoing formula, the alkyl radical containing 1 to 6 carbon a~oms, represented by R9 and R10 can be linear or branched, and examples thereof include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl and n-hexyl. Among these preferred is a linear or branched radical containing 1 to 3 carbon atoms, such aæ methyl, ethyl, propyl or isopropyl.
As to R , R and Rg in the forgoing formula, Rb may be an alkyl radical containing 1 to 6 carbon atoms and examples thereof include methyl, ethyl, propyl, isopropyl, butyl r isobutyl, sec-butyl, pentyl, isopentyl and hexyl. The alkyl may optionally be substituted by a hydroxyl group. Rd may also be such an alkyl radical. Rc may be an alkyl radical containing 2 to 6 carbon atoms and examples thereof include ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, pentyl, isopentyl and hexyl. The alkyl may optionally be substituted by a hydroxyl group.
In the forgoing formula Re or Rf may be a lower alkyl radical containing 1 to 6 carbon atoms and optionally having a ~ubstituent, and examples thereof include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl and hexyl.
Re, Rc or Rf may be a lower alkenyl radical, containing 2 to 6 carbon atoms, and examples thereof include vinyl, allyl, ~-butenyl, methylallyl, 3-butenyl~ 2-pentenyl, 4-pentenyl and 5-hexenyl.
D
~3~2~2 13 275~0-1 R , R or R may be a lower alkynyl radical containing 2 to 6 carbon atoms, and examples thereof include ethynyl, propargyl, 2-butyn-1-yl, 3-butyn-2~yl, 1-pentyn-3-yl, 3-pentyn-1-yl, 4-pentyn-2-yl and 3-hexyn-1-yl.
The substituents in the foregoing alk~l radical as Re or R , include, for example, hydroxyl, C3 5cycloalkyl, halogen cyano, carboxyl and Cl 3alkoxycarbonyl.
Examples of C3 5cycloalkyl radicals include cyclopropyl, cyclobutyl and cyclopentyl.
Examples of Cl 3alkylthio radicals include methylthio, ethylthio and propylthio.
Examples of halogen atoms include fluorine, chlorine, bromine and iodine.
Examples of Cl 3alkoxycarbonyl radicals include methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl and isopropoxycarbonyl.
Further specific examples of the foregoing alkyl radical~ for Re or Rf include chloromethyl, bromomethyl, iodomethyl, trifluoromethyl, chloroethyl, bromoethyl, iodoethyl, chloropropyl, hydoroxymethyl, hydroxyethyl, hydroxypropyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyanomethyl, 2-cyanoethyl, 4-cyanobutyl, carboxymethyl, 2-carboxyethyl and ethoxycarbonylmethyl.
In the forgoing formula, as a carbon chain repre~ented by Rb and Rc together or Re and Rf together for forming the cyclic alkylamino radical with the nitrogen atom to which they are attached, those having 3 to 6 carbon atoms such as trimethylene, ~12~2 14 275~0-11 te~ramethylene, pentamethylene and hexamethylene are included In the forgoing formula, examples of the anions represented by ~ include halogen ions (such as iodide ion, brsmo ion and chloro ion), sulfate ion, phosphate ion, nitrate ion, metllanesulfate ionr p-tolylsulfate ion, benzenesulfate ion, hydroxyl ion and organic carboxylake ion (such as oxalate ion, maleate ion, fumarate ion, succinate ion, citrate ion, lactate ion, trifluoroacetate ion, lactobionate ion, acetate ion, propionate ion and ethylsuccinate ion).
The compound (1) of the present invention contains the following compounds.
; The compound (1), wherein Rl is as defined above; R2 is as defined above other than the Cl_3 alkyl radical which may optionally be substituted by C2 6 alkoxyalkyl radical; Z stands for the formula ~ 151 12( 6CH~ (wherein R5 is as defined above other than the Cl 3 alkyl radical which may optionally be substituted by Cl 4 alkylthio radical, and R6 is as defined above other than the Cl 3 alkyl radical which may optionally be substituted by Cl 4 alkylthio radical; Ra stands for the foxmula -N ~RRc~(wherein Rb and Rc are as defined above); or the formula -N /\ Qe~X (wherein Rd, Re, Rf and ~ are as defined above) and Rll and R12 are as defined above.
In the compound (1) of the present invention, i~ is preferable that R is a hydrogen atom or an alkyl carboxylic acyl radical having 1 to 5 carbon atoms; R2 is a hydrogen atom, an alkyl carboxylic acyl radical having 1 to 5 carbon atoms, an alkyl sulfonic acyl radical having 1 to 5 carbon atoms or an alkyl ~ D
13~28~2 275~G-il thiomethyl radical having 1 to 5 carbon atoms; Z i~ the formula 2 ~6CH3, ~herein each of R5 and R6 is a hydrogen atom, an alkyl carboxylic acyl radical haviny 1 to 5 carbon atoms or an alkyl sulfonic acyl radical haviny 1 to 5 carbon atoms, or R5 and R form ~ O, ~ S, S/= O, /B-Ph or CH3 as Y; each of Rd and Re is an alkyl radical ' -~H3 having 1 to 3 carbon atoms; Rf is an unsubstituted or substituted alkyl radical having 1 to 5 carbon atoms, a alkenyl or alkynyl radical having 2 to 6 carbon atoms.
~ D
~,,, ,~ ~3~2~
It is further preferable that at least one of R5 and R6 is an alkyl carboxylic acyl or alkylthiomethyl radical, each of which has l to 5 carbon atoms, or Y is ~ = S, >S = O, >~-Ph or >C , when Rd and Re are alkyl radicals having l to 3 carbon atoms and form a tertiary amino radical as Ra, and each of Rl and R2 is an hydrogen atom or an alkyl carboxylic acyl having l to 5 carbon atoms. Furthermore, at least one of R5 and R~ is preferably an alkyl carboxylic acyl radical having l to 5 carbon atoms, an alkylthiomethyl radical having l to 5 carbon atoms or an alkyl sulfonic acyl radical having l to 5 carbon atomsr or Y is preferably ,= S, ~S = O, >B-Ph or >C , when Rl is a carboxylic acyl radical C~3 having l to 5 carbon atoms and R2 is a hydrogen atom.
When Ra is a quaternary ammonium salt, it is preferable that both R5 and R6 are hydrogen , or at least one of R5 and R~ is an alkyl acyl radical having l to 5 carbon atoms or an alkyl sulfonic acyl radical.
In the compound ~l) of the present invention9 Ra is D preferable to be a quaterna~y ammonium salt. Particularly, it is preferable that ~ and ~ form together with adjacent nitrogen atom a cyclic alkylamino radical of 5 to 7 members such as pyrrolidine, piperidine, hexamethyleneimine and the like, or both Rd and Re are alkyl radicals having l to 5 ~ 28~
carbon atoms and Rf is an alkyl radical having l to 5 carbon atoms, an alkenyl or alkynyl radical having 2 to 6 carbon atoms. When they have a substituent, it is particularly preferable to be hydroxy, carboxy, Cl_4 alkoxycarbonyl, halogen, cyano and so on. As X of the quaternary ammonium salt, there are preferably mentioned chlorine, bromine and iodine.
The compound (1) of the present invention can be prepared by reacting a compound (2) which may be protected, with an acylating, alkylating, boronatir~g, carbonating, sulfinylating or ketalyzing agent, followed by eventual removal of protection.
This reaction is conducted by reacting the compound (2) in an already kno~n manner with an acylating, alkylating, boronating, carbonating, sulfinylating or ketalyzing agent.
The acylating agent employable in the acylation is a reactive derivative of a carboxylic acid capable of introducing a carboxylic acyl radical, such as an acid halide, an acid anhydride, an amide compound, an active ester or an active thioester. Examples of such reactive derivative are as follows:
l) Acid halide:
Examples of such acid halides are acid chloride and acid bromide.
2) Acid anhydride:
Examples of such acid anhydrides include mixed anhydrides of monoalkyl carbonic acid/ mixed anhydrides of aliphatic carboxylic acids such as acetic acid, pivalic acid, 3~ 28~
valeric acid, isovaleric acid, trichloroacetic acid etc., mixed anhydrides of aromatic carboxylic acids such as benzoic acid, and symmetric acid anhydrides.
3) Amide compound:
As e~amples of such amide compounds, there can be used co~pounds wherein an acyl radical is bonded to a nitrogen atom in a ring, such as a pyrazole, imidazole, 4-substituted imidazole, dimethylpyrazole or benzotriazole.
4) Active ester:
Examples of such active esters include methyl ester, ethyl ester, methoxymethyl ester, propargyl ester, 4-nitrophenyl ester, 2,4-dinitrophenyl ester, trichlorophenyl ester, pentachlorophenyl ester, mesylphenyl ester, and esters with l-hydroxy-lH-2-pyridone, N-hydroxysuccinimide or N-hydroxyphthalimide.
Z stancls for the formula:
~ / CH
R50 oR6 [in which R5 is:
a hydrogen atom, a Cl 6alkanoyl radical, a C7 11 aroyl radical, a Cl 6 alkylsulfonyl radical, a C6-12 arYlSUlfonyl radical~
a C7_20 aralkylsulfonyl radical, or a Cl 3 alkyl radical which is unsubstituted or substituted by a Cl 3 alkoxy radical;
and R is:
a hydrogen atom, a Cl 6 alkanoyl radical, or a Cl 3 alkyl radical which is unsubstituted or substituted by Cl 3 alkylthio radical], ~1 1 1 2(~ C H
H O H
1 j)~2 0~0 1 3 ~
275~0-11 lin which Y stands for the formula B-R8 (wherein R8 stands for C6 10 aryl radical), or ~C=O, iS=O, ~C-S, or the formula:
~C \R10 (wherein each of R9 and R10, which may be the same or different, is a hydrogen atom or a Cl 6 alkyl radical)];
Ra stands for the formula:
/Rb -N \ Rc [in which Rb is a hydrogen atom or a Cl 6 alkyl radical which is un~ubstituted or substituted by a hydroxyl group and Rc i5 a hydrogen atom, a C2_6 alkenyl radical, a C2 6 alkynyl radical, or a C2 6 alkyl radical which is unsubstituted or substituted ~y a hydroxyl radical;
or Rb and Rc together with the nitrogen atom to which they are attached form a C3 6 cyclic alkylamino radical] or ~ Rd N+ Re X
\Rf [in which Rd is a Cl 6 alkyl radical, Re and Rf, which may be the same or different, are each a Cl 6 alkyl radical which is unsubsti~uted or substituted by a sub~tituent selected from the group consisting of hydroxyl, carboxyl, cyano, halogen, C3 5 cycloalkyl and Cl 3 alkoxycarbonyl; a C2 6 alkenyl radical; or a C2 ~ alkynyl radical; or Re and Rf together with the nitrogen a~om to which they are attached form a C3 6 cyclic alkylamino radical;
D-... .
~128~
6 275~0-11 and X stands for a halogen anion]; and Rll and R12 each represent a hydrogen atom or both taken together form a chemical bond;
with the proviso that Y is not >C=O, when Ra i5 a trimethylammonio radical, ~11 and R12 taken together form a chemical bond, and each of Rl and R2 is a hydrogen atom);
(2~ a process for preparing the compound ~1), which comprises reacting a compound represented by the following formula:
R 1~ CH3 Ra C H ~ ~ ~ ~ [ ~ ]
2 ;;~3 U C H ~
1H3 ~o~OH
~H3 (wherein Rll, R12 and Ra have the same meanings as defined above;
and Z" stands for the formula ~ CH3 or OH OH
> 11 12( CH3, provided that one or more reactive groups which OH H
are not desired to be reacted during the reaction may be protected), with an acylating agent, an alkylating agent, a boronating agent, a (thio)carbonating agent, a sulfinylating agent or a ketalyzing agent, followed by deprotection, if necessary;
~3) a process for preparing a compound represented by the following formula or a salt thereof:
D
.
~3128~
7 275~0-11 CH~ ~ ~2 ~ ~ [4]
~ ~1 ~ R 2 (wherein Z''' i8 defined hereinunder and Rl, R2 and Ra have the same meanings as defined above, ~namely, a compound of the formula (1) wherein Rll and R12 together form a chemical bond, except that Z has the meaning of Z''',], which comprises treating a compound of the following formula or a salt thereof under an acidic condition: CH
C ~ ¦ oR2 (wherein Rl, R2 and Ra have the same meanings as defined above;
Z''' stands for the formula > 5 ~ 6 3 [wherein R5 and R6 have the same meanings as defined above], the formula > 11 12~ CH3 or the formula ~ lwherein Y has the same meaning as defined above], with proviso that each of and R2 is other than a hydrogen atom and each of R5 and R6 is other than a hydrogen atom, or Y is not -0, when Ra is a trimethylammonio radical~; and D
`
:
~3128~
(4) a process for preparing a compound represented by the formula: 11 C i l 3 ;~3~ U~
C/> ~\ I CH~ ~ 6 (wherein Z, R , R r R and R12 have the same meanings are a~
defined above, and Ra stands for the formula -N~Rc or the formula ~N \R~ X lwherein Rd, Re and Rf are as defined above, provided R
that Rc is not a hydrogen atom and Re and Rf do not together form a cyclic alkylamino], with the further proviso that Y is not >=0, when Ra is a trimethylammonio radical, R11 and R12 taken together form a chemical bond, each of Rl and R2 is a hydrogen atom3 D
~128~
9 275~0-11 Rll CH3 ~o ~ ~ ~ CH3 ~ ~ ~ `C~ [53 CH~ ~ ~ CH3 oR2 G~3 (wherein Z, Rl, R2, Rll and R12 have the same meanings as defined above, and Rg stands for the formula -NH-Rb (wherein Rb has the same meaning as defined above) or the formula -N/Re (wherein Rd and R have the same meanings as defined above) ~o N-alkylation, N-alkenylation or N-alkynylation.
The foregoing compounds (4) and (6) are included in the compound (1).
DESCRIPTION OF THE PREF~RRED EMBODIMENTS
Rl in the foregoing formula can be an acyl radical such a~ a carboxylic acyl, a sulfonic acyl or a phosphoric acyl.
~ 2 or R5 in the foregoing formula can be an acyl radical such as a carboxylic acyl or a sulfonic acyl.
The carboxylic acyl is an acyl radical derived from a monocarboxylic acid or a polycarboxylic acid.
~ 3~2~
275~
The monocarboxylic acyl radical includes an alkyanoyl radical containing 1 to 6 carbon atoms (such as formyl, acetyl, propionyl, butyryl, isobutyryl, valeryl, isovaleryl, hexanoyl and pivaloyl) and an aroyl radical containing 7 to 11 carbon atoms ~such as benzoyl, naphthoyl and the like).
The polycarboxylic acyl radical includes a dicarboxylic acyl radical containing 2 to 6 carbon atoms and one carboxyl group being esterified with an alkyl group having 1 to 3 carbon atoms sueh as methyl, ethyl or propyl. The dicarboxylic acyl radical is for @xample, oxalo, carboxyacetyl, 3-~arboxypropionyl, etc. The dicarboxylic acyl radical may alternatively be considered as the alkanoyl radical mentioned above but being substituted by a Cl 3 alkoxycarbonyl radlcal.
The sulfonic acyl is an acyl radical derived from a sul~onic acid, represented for example by the general formula R13So2-, wherein R13 stands for a Cl 6alkyl, C6 12aryl or C7 20 aralkyl radical. The alkyl radical contains 1 to 6 carbon atoms, and may be linear or branched. Examples of the alkyl radical are methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl and n-hexyl. ~xamples of the aryl radical include phenyl and naphthyl. The aryl radical may have a substituent and examples of the substituent include a lower alkyl radical (such as methyl), a lower alkoxy radical Isuch as methoxy), a halogen atom tsuch as fluorine, chlorine and bromine), a nitro radical, a carboxy radical, etc.
An example of the aralkyl radical is 2-phenethyl. The phosphoric acyl is an acyl radical derived from phosphoric acid, represented, for example, by the general formula (R150)2Po-, ~D
~28~
11 ~75 wherein R15 stands for a Cl_6 alkyl or C7_11 aryl radical-~ xamples of the alkyl radicals include methyl, ethyl, propyl, isopropyl, butyl, isohutyl, sec-butyl, tert-butyl, n-pentyl and n-hexyl. Examples of the aryl radicals include phenSJl~
tolyl and naphthyl. The substituent in the acyl radical which may be substituted, represented by R2 can be, for example, an alkoxy As the alkoxy radical, there can be mentioned radicals containing 1 to ~ carbon atoms, such as methoxy, ethoxy, propoxy and butoxy.
The Cl 6 alkanoyl radical represented by R6 in the foregoing formula is such as formyl, acetyl, propionyl, butyryl, isobutyryl, valeryl, isovaleryl and hexanoyl.
In the foregoing formula, the alkyl radical in the alkyl radical which may be substituted, represented by R2 or R5 contains 1 to 3 carbon atoms, and can be linear or branched. Examples of the alkyl radicals include methyl, ethyl, propyl and isopropyl.
The alkyl group may have a substituent which is preferably an alkoxy radical containing 1 to 3 carbon atoms or an alkoxyalkoxy radical containing 2 to 6 carbon atoms, and examples of the alkoxy radicals include methoxy, ethoxy and propoxy, while examples of the alkoxyalkoxy radicals includs methoxyethoxy, methoxypropoxy, methoxybutoxy, methoxypentyloxy, ethoxyethoxy, ethoxypropoxy, ethoxybutoxy and proxypropoxy.
In the foregoing formula, the alkyl radical which is repre~ented by R6 and may have an alkylthio substituent can be methyl. The alkylthio as the substituent may include a radical represented by the general formula R16S-, wherein R16 a lower D
131 28~2 12 27~
alkyl radical. The lower alkyl radical preferably contains 1 to 3 carbon atoms, such as methyl, ethyl or propyl.
In the foregoing formula, the aryl radical represen~ed by R8 is for example, phenyl, tolyl or naphthyl.
In the foregoing formula, the alkyl radical containing 1 to 6 carbon a~oms, represented by R9 and R10 can be linear or branched, and examples thereof include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl and n-hexyl. Among these preferred is a linear or branched radical containing 1 to 3 carbon atoms, such aæ methyl, ethyl, propyl or isopropyl.
As to R , R and Rg in the forgoing formula, Rb may be an alkyl radical containing 1 to 6 carbon atoms and examples thereof include methyl, ethyl, propyl, isopropyl, butyl r isobutyl, sec-butyl, pentyl, isopentyl and hexyl. The alkyl may optionally be substituted by a hydroxyl group. Rd may also be such an alkyl radical. Rc may be an alkyl radical containing 2 to 6 carbon atoms and examples thereof include ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, pentyl, isopentyl and hexyl. The alkyl may optionally be substituted by a hydroxyl group.
In the forgoing formula Re or Rf may be a lower alkyl radical containing 1 to 6 carbon atoms and optionally having a ~ubstituent, and examples thereof include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, pentyl and hexyl.
Re, Rc or Rf may be a lower alkenyl radical, containing 2 to 6 carbon atoms, and examples thereof include vinyl, allyl, ~-butenyl, methylallyl, 3-butenyl~ 2-pentenyl, 4-pentenyl and 5-hexenyl.
D
~3~2~2 13 275~0-1 R , R or R may be a lower alkynyl radical containing 2 to 6 carbon atoms, and examples thereof include ethynyl, propargyl, 2-butyn-1-yl, 3-butyn-2~yl, 1-pentyn-3-yl, 3-pentyn-1-yl, 4-pentyn-2-yl and 3-hexyn-1-yl.
The substituents in the foregoing alk~l radical as Re or R , include, for example, hydroxyl, C3 5cycloalkyl, halogen cyano, carboxyl and Cl 3alkoxycarbonyl.
Examples of C3 5cycloalkyl radicals include cyclopropyl, cyclobutyl and cyclopentyl.
Examples of Cl 3alkylthio radicals include methylthio, ethylthio and propylthio.
Examples of halogen atoms include fluorine, chlorine, bromine and iodine.
Examples of Cl 3alkoxycarbonyl radicals include methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl and isopropoxycarbonyl.
Further specific examples of the foregoing alkyl radical~ for Re or Rf include chloromethyl, bromomethyl, iodomethyl, trifluoromethyl, chloroethyl, bromoethyl, iodoethyl, chloropropyl, hydoroxymethyl, hydroxyethyl, hydroxypropyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyanomethyl, 2-cyanoethyl, 4-cyanobutyl, carboxymethyl, 2-carboxyethyl and ethoxycarbonylmethyl.
In the forgoing formula, as a carbon chain repre~ented by Rb and Rc together or Re and Rf together for forming the cyclic alkylamino radical with the nitrogen atom to which they are attached, those having 3 to 6 carbon atoms such as trimethylene, ~12~2 14 275~0-11 te~ramethylene, pentamethylene and hexamethylene are included In the forgoing formula, examples of the anions represented by ~ include halogen ions (such as iodide ion, brsmo ion and chloro ion), sulfate ion, phosphate ion, nitrate ion, metllanesulfate ionr p-tolylsulfate ion, benzenesulfate ion, hydroxyl ion and organic carboxylake ion (such as oxalate ion, maleate ion, fumarate ion, succinate ion, citrate ion, lactate ion, trifluoroacetate ion, lactobionate ion, acetate ion, propionate ion and ethylsuccinate ion).
The compound (1) of the present invention contains the following compounds.
; The compound (1), wherein Rl is as defined above; R2 is as defined above other than the Cl_3 alkyl radical which may optionally be substituted by C2 6 alkoxyalkyl radical; Z stands for the formula ~ 151 12( 6CH~ (wherein R5 is as defined above other than the Cl 3 alkyl radical which may optionally be substituted by Cl 4 alkylthio radical, and R6 is as defined above other than the Cl 3 alkyl radical which may optionally be substituted by Cl 4 alkylthio radical; Ra stands for the foxmula -N ~RRc~(wherein Rb and Rc are as defined above); or the formula -N /\ Qe~X (wherein Rd, Re, Rf and ~ are as defined above) and Rll and R12 are as defined above.
In the compound (1) of the present invention, i~ is preferable that R is a hydrogen atom or an alkyl carboxylic acyl radical having 1 to 5 carbon atoms; R2 is a hydrogen atom, an alkyl carboxylic acyl radical having 1 to 5 carbon atoms, an alkyl sulfonic acyl radical having 1 to 5 carbon atoms or an alkyl ~ D
13~28~2 275~G-il thiomethyl radical having 1 to 5 carbon atoms; Z i~ the formula 2 ~6CH3, ~herein each of R5 and R6 is a hydrogen atom, an alkyl carboxylic acyl radical haviny 1 to 5 carbon atoms or an alkyl sulfonic acyl radical haviny 1 to 5 carbon atoms, or R5 and R form ~ O, ~ S, S/= O, /B-Ph or CH3 as Y; each of Rd and Re is an alkyl radical ' -~H3 having 1 to 3 carbon atoms; Rf is an unsubstituted or substituted alkyl radical having 1 to 5 carbon atoms, a alkenyl or alkynyl radical having 2 to 6 carbon atoms.
~ D
~,,, ,~ ~3~2~
It is further preferable that at least one of R5 and R6 is an alkyl carboxylic acyl or alkylthiomethyl radical, each of which has l to 5 carbon atoms, or Y is ~ = S, >S = O, >~-Ph or >C , when Rd and Re are alkyl radicals having l to 3 carbon atoms and form a tertiary amino radical as Ra, and each of Rl and R2 is an hydrogen atom or an alkyl carboxylic acyl having l to 5 carbon atoms. Furthermore, at least one of R5 and R~ is preferably an alkyl carboxylic acyl radical having l to 5 carbon atoms, an alkylthiomethyl radical having l to 5 carbon atoms or an alkyl sulfonic acyl radical having l to 5 carbon atomsr or Y is preferably ,= S, ~S = O, >B-Ph or >C , when Rl is a carboxylic acyl radical C~3 having l to 5 carbon atoms and R2 is a hydrogen atom.
When Ra is a quaternary ammonium salt, it is preferable that both R5 and R6 are hydrogen , or at least one of R5 and R~ is an alkyl acyl radical having l to 5 carbon atoms or an alkyl sulfonic acyl radical.
In the compound ~l) of the present invention9 Ra is D preferable to be a quaterna~y ammonium salt. Particularly, it is preferable that ~ and ~ form together with adjacent nitrogen atom a cyclic alkylamino radical of 5 to 7 members such as pyrrolidine, piperidine, hexamethyleneimine and the like, or both Rd and Re are alkyl radicals having l to 5 ~ 28~
carbon atoms and Rf is an alkyl radical having l to 5 carbon atoms, an alkenyl or alkynyl radical having 2 to 6 carbon atoms. When they have a substituent, it is particularly preferable to be hydroxy, carboxy, Cl_4 alkoxycarbonyl, halogen, cyano and so on. As X of the quaternary ammonium salt, there are preferably mentioned chlorine, bromine and iodine.
The compound (1) of the present invention can be prepared by reacting a compound (2) which may be protected, with an acylating, alkylating, boronatir~g, carbonating, sulfinylating or ketalyzing agent, followed by eventual removal of protection.
This reaction is conducted by reacting the compound (2) in an already kno~n manner with an acylating, alkylating, boronating, carbonating, sulfinylating or ketalyzing agent.
The acylating agent employable in the acylation is a reactive derivative of a carboxylic acid capable of introducing a carboxylic acyl radical, such as an acid halide, an acid anhydride, an amide compound, an active ester or an active thioester. Examples of such reactive derivative are as follows:
l) Acid halide:
Examples of such acid halides are acid chloride and acid bromide.
2) Acid anhydride:
Examples of such acid anhydrides include mixed anhydrides of monoalkyl carbonic acid/ mixed anhydrides of aliphatic carboxylic acids such as acetic acid, pivalic acid, 3~ 28~
valeric acid, isovaleric acid, trichloroacetic acid etc., mixed anhydrides of aromatic carboxylic acids such as benzoic acid, and symmetric acid anhydrides.
3) Amide compound:
As e~amples of such amide compounds, there can be used co~pounds wherein an acyl radical is bonded to a nitrogen atom in a ring, such as a pyrazole, imidazole, 4-substituted imidazole, dimethylpyrazole or benzotriazole.
4) Active ester:
Examples of such active esters include methyl ester, ethyl ester, methoxymethyl ester, propargyl ester, 4-nitrophenyl ester, 2,4-dinitrophenyl ester, trichlorophenyl ester, pentachlorophenyl ester, mesylphenyl ester, and esters with l-hydroxy-lH-2-pyridone, N-hydroxysuccinimide or N-hydroxyphthalimide.
5) Active thioester:
Examples of such active thioesters include thioesters with heterocyclic thiols such as 2-pyridylthiol or 2-benzothiazolylthiol.
The above-mentioned reactive derivatives are suitably selected according to the kind of the carboxylic acid.
In case a reactive derivative of a polycarboxylic acid is employed as the acylating agent, carboxyl radicals, except one, are preferably protected in the form of esters.
The acylating agent can also be a reactive derivative of a sulfonic acid capable of introducing a sulfonic acyl radical, for example, an acid halide such as ~3~$~
~`
~ `
methane s~llfonyl chloride, benzylsulfonyl chloride or paratoluene sulfonyl chloride, or a symmetric acid anhydride such as methane sulfonic anhydride or paratoluene sulfonic anhydride.
In the alkylation, the alkylating agent employable for the alkylation at the 4"- or 11- position can for example be a corresponding alkyl halide (for example chloride, bromide or iodide), and that employable for the alkylation at the 12-position can for example be dimethyl sulfoxide.
Examples of the boronating agents employable in the boronation reaction are alkylboric acids (such as ethylboric acid) and arylboric acids (such as phenylboric acid3.
Examples of the carbonating agents employable in the carbonation reaction are ethylene carbonate, carbonyl diimidazole and thiocarbonyl diimidazole.
Examples of the sulfinylating agents employable in the sulfinylation reaction is ethylene sulfite.
Examples of the ketalyzing agents employable in the ketalization reaction are 2-methoxypropene, 2,2-dimethoxypropane, l,l-dimethoxycyclohexane, N,N-dimethyl-formamide dimethylacetal, and N,N-dimethylacetamide dimethylacetal.
In case of employing a reactive derivative of a carboxylic acid as the acylating agent in the acylation reaction, the amoun~ of said acylating agent varies according to the number of acyl radicals to be introduced.
The solvent to be employed in the acylation is not limited as long as it does not react with the acylating agent, 28g~
~o - 3~ -but is preferably dichloromethane, ether, pyridine, chloroform or the like. Examples of bases are tertiary amines such as triethylamine, diisopropylethylamine and tribenzylamine, and inorganic salts such as potassium carbonate. The reaction temperature is about 0C to 80C, and the reaction time is about 10 minutes to 2 weeks.
In case of employing a reactive derivative of a sulfonic aci~ as the acylating agent in the acylation reaction, the amount of the acylating a~ent varies accGrding to the number o~ acyl radicals to be introduced.
Examples of the solvents to be employed in t'ne acylation are pyridine, chloroform, ether and dichloromethane.
Examples of the bases are tertiary amines such as pyridine, tribenzylamine and diisopropylethylamine. The reaction temperature is about 0C to 50C, and the reaction time is about 10 minutes to 2 days.
The amount of alkylating agent in the alkylation reaction varies according to the number of alkyl radicals to be introduced.
Examples of the solvents to be employed in the alkylation reaction are chloroform, dimethyl sulfoxide, dimethyl formamide, ether and ethanol. The reaction temperature is about 0C to 80C, and the reaction time is about 15 minutes to 1 wee~. Examples of the bases to be employed in the alkylation at the 4"- or 11- position are tertiary amines such as diisopropylethylamine or pyridine, sodium hydride and potassium hydride.
';
r7 , ~ , .
~" ~3~28~
In the boronation reaction, the boronating agent is preferably employed in an equivalent amount or in excess (2 - 3 times in molar ratio). ~xamples of the solvents to be employed in the boronation reaction are benzene, toluene and ether. The reaction temperature is about 80C to 130C, and the reaction time is about 1 hour to 5 hours.
In the carbonation reaction, the carbonating agent is preferably employed in a 2 - 10 times excess amount in molar ratio, according to the kind thereof. Examples of the solvents to be employed in the carbonation reaction are benzene and toluene. The reaction temperature is about 25C
to 130C, and the reaction time is about 30 minutes to 1 day.
In case of employing ethylene carbonate as the carbonating agent in the carbonation reaction, the base to be employed can be an inorganic salt such as potassium carbonate.
In the sulfinylation reaction, the sulfinylating agent is preferably employed in a small excess (2 - 3 times in molar ratio). Examples of the solvent to be employed in the sulfinylation are methanol and ethanol. The reaction temperature is about 20C to 30C, and the r~action time is about 2 days to 3 days. The base to be employed in said sulfinylation can be an inorganic salt such as potasslum carbonate.
The ketalization reaction should preferably be carried out according ~o the ketal exchange reaction by using the compound of the corresponding formula RlR0 `C~ OR or RRlo~ OR
3128~
(wherein R9 and R10 have the same meanings as defined above, represents a lower alkyl radical such as methyl, ethyl) as tne ketalyzing agent. As the reaction solvent there can be employed halogenated hydrocarbons such as chloroform, ethers such as tetrahydrofuran, and amides such as dimethylformamide, and it is also possible tG use the ketalyzing agent itself as the solvent. Although the ketalyzin~ agent may be used usually in slight excess (about 2 times mols) to a great excess (about 100 times mols), but the amount is preferably 2 to 4 times excess in the case of the latter ketalyzing agent.
As the catalyst, a strong acid salt of pyridine (such as pyridinium chloride), etc., is preferably used. Particularly in the case of the present compound, the combination of the latter ketalyzing agent and pyridinium chloride is preferred.
The reaction may be conducted preferably at a temperature of 0C to the boiling point of the solvent, more preferably at around room temperature (about 15C to 25C). The reaction time may be from several hours to 72 hours, usually about 12 to 24 hours.
In the above-mentioned reactions of the compound (2) which may be protected, the order of reactivity of hydroxyl radicals on the 2'-/ 4"~ and 12- positions is 2l >> 4" >
ll >~ 12.
In the following there are explained the cases of introducing a carboxylic acyl radical. In case of acylation at the 2'- position only, a chloroform solution of the compound (2) is agitated with an acylating agent in a small 312~
excess (about 2 times in molar ratio) and a base in a small excess (about 3 times in molar ratio). The reaction is completed in a short time at room temperature, and the desired compound is obtained by purification by silica gel chromatography.
In case of acylation at the 4"- position only, a compound subjected to the acetylation at the 2'- position as explained above is agitated with large excesses of an acylating agent and a base for 15 minutes to overnight at room temperature, then treated in the usual manner and purified by silica gel chromatography to obtain a 2'-O-acetyl-4"-O-acylated compound. The desired compound is obtained by allowing a methanolic solution of the above-mentioned compound to stand for 1 to 2 days at room temperature, and distilling off methanol under a reduced pressure, followed by purification by silica gel chromatography.
In case of acylation at the ]1- position onlyr a 2'-O-acetyl-4"-formylated compound obtained in the above-explained manner is agitated with large excesses of an acylating agent and a base for several hours to several days at room temperature to-about 70C to obtain a 2'-O-acetyl-4"-formyl-ll-acylated compound, which is then heated under reflux for about 3 hours to 3 days in methanol to obtain the desired compound.
In case of acylation at the 12- position only, a 2'-O-acetylated compound obtained in the above-explained manner is agitated overnight with trimethylchlorosilane and tribenzylamine and treated in the usual manner to obtain a ~ !
.3 ~2 3 ~ ~
2'-0-acetyl-11,4"-di-0-silylated compound. A dichloroethane solution of the compound is agitated with large excesses of an acylating agent and a base for two days at 75 - ~0C to obtain a 2'-0-acetyl-11,4"-di-0-silyl-12-0-acylated compound, which is treated in the usual manner and subjected to methanolysis to obtain the desired compound.
In the following, there will be explained the case of introducing an alkyl radical. In case of alkylation at the 4"~ position only, a compound of which the 2'- position is acetylated in the above-explained manner is dissolved in dichloromethane, added with an alkylating agent and a base under cooling with ice, and is let to stand for 30 minutes at room temperature to obtain a 2'-0-acetyl-4"~0-alkylated compound. This compound is dissolved in methanol, then is let to stand for one day at room temperature, and the reaction solution is concentrated under a reduced pressure and is purified by silica gel chromatography to obtain the desired compound.
In case of alkylation at the 11- position only, the compound (2) is reacted with excess amounts of benzyloxycarbonyl chloride and sodium hydrogen carbonate, and the hydroxyl radical in the 2'- position and the 3'-dimethylamino radical are protected by, in the latter case, by a methyl radial of it by the acyl.
2~ It is then dissolved in dimethyl formamide and reacted with an alkylating agent and a base under cooling with ice.
The product is then dissolved in water and ethanol, then subjected to hydrogenolysis in the presence of a palladium-2s- ~3~2~
D
carbon catalyst, and hydrogenated in the presence of formaldehyde to obtain the desired compound.
In case of alkylation at the 12- position only, a compound, of which the 2'-, 4"- and 11- positions are acetylated in the above-explained manner, is dissolved in dimethyl sulfoxide and is let to stand, with a large excess of acetic anhydride, for 96 hours to 1 week at room temperature.
The reaction solution is then concentrated under a reduced pressure, and purified by silica gel chromatography, and the obtained compound is dissolved in methanol and heated with lithium hydroxide at 50C for 4 hours to obtain the desired compound.
Preferred examples of the protecting radicals are acetyl for the 2'- position, formyl and silyl for the 4"-position, and acetyl and silyl for the 11- positionO
A compound (2) having a protective radical can be prepared in processes similar to that explained above.
If thus prepared compound (1) has a protective radical, they may be removed if necessary. The removal of the protective radical can be suitably achieved in the usual manner, for example, by a method using a base (alkaline hydrolysis), a method using hydrazine or a reduction method, according to the kind of the protective radicals. In the method using a base, there can be employed, depending on the kind of the protective radicals and other conditions, for example, a hydroxide of an alkaline metal such as sodium, potassium or lithium or an alkàli earth metal such as calcium 12~
or magnesium, an inorganic base such as a carbonate, a metal alkoxide, an organic amine, an organic base such as quaternary ammonium salt, or a basic ion exchange resin. If the method using a base is conducted in the presence of a solvent, said solvent is usually a hydrophilic organic solvent, water or a mixture thereof.
The reduction method is conducted, for example, in the presence of a reducing metal catalyst, depending on the kind of protective radicals and other conditions, and the examples of such catalyst employable in catalytic reduction include platinum catalysts such as platinum sponge, platinum asbestos, platinum black, platinum oxide and colloidal platinum; palladium catalysts such as palladium sponge, palladium black, palladium oxide, palladium on barium sulfate, 15 palladium on barium carbonate, palladium on activated carbon, colloidal palladium and palladium on silica gel; reduced nickel, nickel, oxide, Raney nickel and Urushibara nickel.
The reduction method is usually conducted in a solvent, which is usually composed of an alcohol such as methanol, ethanol, propyl alcohol or isopropyl alcohol, or ethyl acetate.
The method using a base or the reduction method is usually conducted under cooling or under heating.
In the reaction in which the compound (3) is treated under acidic conditions to prepare the compound (4), there can be employed, for acidification, an organic acid such a~ acetic acid, pyridinium chloride or pyridinium paratoluene sulfonate.
~ ,, 1~2~
~1 D
The reaction temperature is about 0C to 30C, the reaction time is about 30 minutes to 1 hour, and the range of pH in reaction is 1 to 6~ The solvent employable in the reaction is, for example, acetic acid, chloroform, dichloromethane or ether, and the reaction is preferably conducted under agitation.
By subjecting a compound (5') which corresponds to the compound (5) in which R9 is the formula -NH-Rb (wherein Rb is the same meaning as defined above) to N-alkylation, N-alkenylation or N-alkynylation, a compound (6') which corresponds to the compound (6) in which Ra is the formula -N~RC (wherein Rb and Rc have the same meanings as defined above) can be prepared.
The reaction is carried out by reacting a corresponding ketone or aldehyde to the compound ~5') under the reduction conditions. As the reduction conditions, catalytic reduction can be used (see R. K. Clark Jr. and M.
Flyfelder, ANTIBIOTICS AND CHEMOTHERAPY, 7, ~83 (1957)). The catalyst usable therefore may be those as described in the previous item of reductive deprotection, particularly preferable being palladium black, palladium carbon, and Raney nickel. The reaction can be preferably carried out in alcohols (such as methanol and ethanol), ethers (such as tetrahydrofuran and dimethoxyethane) and aqueous mixtures thereof, in the presence of hydrogen gas, under ice cooling to about 80C, preferably around room temperature.
~ 13~ 28~
~ As the reduction condition, reduction by use o a metal hydride may also be used. As the metal hydride, sodium borohydride and sodium cyanoboronydride are preferred.
The reaction is carried out preferably in a solvent such as alcohols (e.g. methanol and ethanol), ethers (e.g.
tetrahydrofuran and dimethoxyethane3, nitriles (e.g.
acetonitrile) and aqueous mixtures thereof, more preferably while maintaining the pH of the reaction mixture at neutral to weakly acidic (pH about 3 to 6), and it is preferable for control of the pH, to add a buffer solution or mineral acid (such as hydrochloric acid), an organic acid (such as acetic acid) or an aqueous solution thereof.
The amount of the metal hydride used is varied, depending on the carbonyl compound used, but it is a slight excess over to about 100 times the theoretical amount, preferably a slight excess to about 10 times, thereof, and it is added suitably with the progress of the reaction.
The reaction is carried out at about -20C to 80C, preferably at a~out 0C to 30C.
The compound (6') can also be synthesized by allowing the compound ~5') to react with, for example, corresponding alkyl, alkenyl or alkynyl halide, an ester, trioxonium salt, etc., in the presence of a base.
Examples of the bases include sodium hydroxide, potassium hydroxide, sodium hydrogen carbonate, potassium carbonate, butyl lithium, phenyl lithium and sodium hydride.
.
, - ~q 13~28~
Examples of the halogen atoms in the halide includ~
chlorine, bromine and iodine, particularly preferably iodine.
Examples of the esters include a sulfate ester and the like.
Typical examples of the trioxonium salts include trimethyloxonium fluoroborate, triethyloxonium fluoroborate, etc.
The reaction reagent is used in an amount of about 1 to lO0 mol equivalent, preferably about 2 to 25 mol equivalent per one mol of the starting compound.
The solvent to be used in the reaction include, for example, haloganated hydrocarbones (such as chloroform and dichloromethane), ether, (such as ethyl ether and tetrahydrofuran), esters (such as ethyl acetate), alcohols (such as methanol and ethanol), etc.
The reaction is carried out under ice cooling (about 0C) to the boiling point of the solvent (about 100C), preferably at room temperature (about 15 to 25C) to about 80C.
The reaction time is about 2 to 48 hours.
By subjecting the foregoing compound (6') as the starting compound to N-alkylation, N-alkenylation or ~-alkynylation reaction, a compound (6") can be prepared, wherein Ra in the compound (6) is the formula - ~ ~ Re ~ in which Rd, Re, Rf and ~ have the same meanings as defined above.
~ 3~286~
_ ,~ _ As the reagent employable in the reaction, t'nere can be mentioned, for example, the corresponding alkyl, alkenyl or alkynyl halide, an ester trioxonium salt, etc.
Examples of the halogen atom~ in the halide include chlorine, bromine and iodine, particularly preferably iodine.
Examples of the esters include a sulfate ester and the like.
Examples of the ester include a sulfate ester and the like.
Typical examples of the trioxonium salts include trimethyloxonium fluoroborate, triethyloxonium fluorobrate, etc.
The reaction reagent is used in an amount of about 1 to 100 mol equivalent, preferably about 2 to 25 mol equivalent per one mol of the starting compound.
The solvent to be used in the reaction include, for example, haloganated hydrocarbons (such as chloroform and dichloromethane), ether (such as ethyl ether and tetrahydrofuran), ester (such as ethyl acetate), alcohols (such as methanol and ethanol), etc.
The reaction is carried out under ice cooling (about 0C) to the boiling point of the solvent (about 100C), preferably at room temperature (about 15 to 25~C) to about 80C.
The reaction time is about 2 hours to 1 week.
From the reaction mixture, after carrying out optionally washing with aqueous sodium carbonate, or aqueous 31 ~3~ 28~
D sodium chloride, drying or concentration, the product can be isolated by filtration of the precipitate formed by addition of an ether or the like to obtain the desired product as a salt of the anion from the reagent used in quaternarization.
The quaternization can be conducted before or after the foregoing acylation reaction and the like, preferably thereafter.
When the reaction mixture is subjected to column chromatography with silica gel or ion exchange resin, using, for example, a mixture of chloroform-metanol added with conc.
aqueous ammonia, a compound with hydroxide ion (OH-) as the anion can be obtained.
The anions of the compound thus obtained can be exchanged with other anions by a conventional means.
The starting compound (5') used in the above reaction can be prepared by treating, for example, de(N-methyl)erythromycin A or bis ~de(N-methyl~ erythromycin A E.
. Flynnt et al., Journal of the American Chemical Society, 77, 310~ (1955), Japanese Laid-open Patent Application No.
912~/1972) under acidic conditions.
The compound (1) thus obtained can be isolated and purified in per se already known methods, for example, concentration, pH alteration~ solvent-transformation, solvent e~traction, lyophilization, crystallization~
recrystallization, distillation, chromatography, etc.
D 3~ 3~28~
The compound (1) may form a salt with an acid.
Examples of such acids include organic acids (for example, ethylsuccinic acid, glycopeptonic acid, stearic acid, propionic acid, lactobionic acid, oxalic acid, maleic acid, fumaric acid, succinic acid, citric acid, lactic acid, trifluoroacetic acid, acetic acid, methanesulfonic acid, paratoluenesulfonic acid, and benzenesulfonic acid~ and mineral acids (for example, sulfuric acid, hydrochloric acid, hydriodic acid, hydrobromic acid, phosphoric acid, and nitric acid).
The starting compound in the process of the present invention can be prepared, for example, by methods reported by W. Slawinski et al., Journal of the Royal Netherlands Chemical Society, 94 236, 1975; V. C. Stephens et at., Antibiotics Annual, 1958-1959, 346; P.H. Jones et al., Journal of Medicinal Chemistry, 15, 631, 1972; J. Tadanier et al., Journal of Organic Chemistry, 39, 2495, 1974; A. Banaszek et al., Roczniki Chemi, 43, 763, 1969; C. W. Pettinga et al., Journal of the American Chemical Society, 76, 569, 1954; P. F.
Wiley et al., Journal of the American Chemical Society, 79, 6074, 1957; J Majer et al., Journal of the American Chemical Society, 99, 1620, 1977; and J. Ro Martin et al., Journal of Antibiotics, 35, 426, 1982 or similar methods or by subjecting the compounds described in the above-mentioned references to the above-described process of the present invention or the conventional known means.
33 ~28~, On the other hand, the starting compounds 9-dihydroerythromycin A 6,9-epoxide and 9-dihydroerythromycin B
Examples of such active thioesters include thioesters with heterocyclic thiols such as 2-pyridylthiol or 2-benzothiazolylthiol.
The above-mentioned reactive derivatives are suitably selected according to the kind of the carboxylic acid.
In case a reactive derivative of a polycarboxylic acid is employed as the acylating agent, carboxyl radicals, except one, are preferably protected in the form of esters.
The acylating agent can also be a reactive derivative of a sulfonic acid capable of introducing a sulfonic acyl radical, for example, an acid halide such as ~3~$~
~`
~ `
methane s~llfonyl chloride, benzylsulfonyl chloride or paratoluene sulfonyl chloride, or a symmetric acid anhydride such as methane sulfonic anhydride or paratoluene sulfonic anhydride.
In the alkylation, the alkylating agent employable for the alkylation at the 4"- or 11- position can for example be a corresponding alkyl halide (for example chloride, bromide or iodide), and that employable for the alkylation at the 12-position can for example be dimethyl sulfoxide.
Examples of the boronating agents employable in the boronation reaction are alkylboric acids (such as ethylboric acid) and arylboric acids (such as phenylboric acid3.
Examples of the carbonating agents employable in the carbonation reaction are ethylene carbonate, carbonyl diimidazole and thiocarbonyl diimidazole.
Examples of the sulfinylating agents employable in the sulfinylation reaction is ethylene sulfite.
Examples of the ketalyzing agents employable in the ketalization reaction are 2-methoxypropene, 2,2-dimethoxypropane, l,l-dimethoxycyclohexane, N,N-dimethyl-formamide dimethylacetal, and N,N-dimethylacetamide dimethylacetal.
In case of employing a reactive derivative of a carboxylic acid as the acylating agent in the acylation reaction, the amoun~ of said acylating agent varies according to the number of acyl radicals to be introduced.
The solvent to be employed in the acylation is not limited as long as it does not react with the acylating agent, 28g~
~o - 3~ -but is preferably dichloromethane, ether, pyridine, chloroform or the like. Examples of bases are tertiary amines such as triethylamine, diisopropylethylamine and tribenzylamine, and inorganic salts such as potassium carbonate. The reaction temperature is about 0C to 80C, and the reaction time is about 10 minutes to 2 weeks.
In case of employing a reactive derivative of a sulfonic aci~ as the acylating agent in the acylation reaction, the amount of the acylating a~ent varies accGrding to the number o~ acyl radicals to be introduced.
Examples of the solvents to be employed in t'ne acylation are pyridine, chloroform, ether and dichloromethane.
Examples of the bases are tertiary amines such as pyridine, tribenzylamine and diisopropylethylamine. The reaction temperature is about 0C to 50C, and the reaction time is about 10 minutes to 2 days.
The amount of alkylating agent in the alkylation reaction varies according to the number of alkyl radicals to be introduced.
Examples of the solvents to be employed in the alkylation reaction are chloroform, dimethyl sulfoxide, dimethyl formamide, ether and ethanol. The reaction temperature is about 0C to 80C, and the reaction time is about 15 minutes to 1 wee~. Examples of the bases to be employed in the alkylation at the 4"- or 11- position are tertiary amines such as diisopropylethylamine or pyridine, sodium hydride and potassium hydride.
';
r7 , ~ , .
~" ~3~28~
In the boronation reaction, the boronating agent is preferably employed in an equivalent amount or in excess (2 - 3 times in molar ratio). ~xamples of the solvents to be employed in the boronation reaction are benzene, toluene and ether. The reaction temperature is about 80C to 130C, and the reaction time is about 1 hour to 5 hours.
In the carbonation reaction, the carbonating agent is preferably employed in a 2 - 10 times excess amount in molar ratio, according to the kind thereof. Examples of the solvents to be employed in the carbonation reaction are benzene and toluene. The reaction temperature is about 25C
to 130C, and the reaction time is about 30 minutes to 1 day.
In case of employing ethylene carbonate as the carbonating agent in the carbonation reaction, the base to be employed can be an inorganic salt such as potassium carbonate.
In the sulfinylation reaction, the sulfinylating agent is preferably employed in a small excess (2 - 3 times in molar ratio). Examples of the solvent to be employed in the sulfinylation are methanol and ethanol. The reaction temperature is about 20C to 30C, and the r~action time is about 2 days to 3 days. The base to be employed in said sulfinylation can be an inorganic salt such as potasslum carbonate.
The ketalization reaction should preferably be carried out according ~o the ketal exchange reaction by using the compound of the corresponding formula RlR0 `C~ OR or RRlo~ OR
3128~
(wherein R9 and R10 have the same meanings as defined above, represents a lower alkyl radical such as methyl, ethyl) as tne ketalyzing agent. As the reaction solvent there can be employed halogenated hydrocarbons such as chloroform, ethers such as tetrahydrofuran, and amides such as dimethylformamide, and it is also possible tG use the ketalyzing agent itself as the solvent. Although the ketalyzin~ agent may be used usually in slight excess (about 2 times mols) to a great excess (about 100 times mols), but the amount is preferably 2 to 4 times excess in the case of the latter ketalyzing agent.
As the catalyst, a strong acid salt of pyridine (such as pyridinium chloride), etc., is preferably used. Particularly in the case of the present compound, the combination of the latter ketalyzing agent and pyridinium chloride is preferred.
The reaction may be conducted preferably at a temperature of 0C to the boiling point of the solvent, more preferably at around room temperature (about 15C to 25C). The reaction time may be from several hours to 72 hours, usually about 12 to 24 hours.
In the above-mentioned reactions of the compound (2) which may be protected, the order of reactivity of hydroxyl radicals on the 2'-/ 4"~ and 12- positions is 2l >> 4" >
ll >~ 12.
In the following there are explained the cases of introducing a carboxylic acyl radical. In case of acylation at the 2'- position only, a chloroform solution of the compound (2) is agitated with an acylating agent in a small 312~
excess (about 2 times in molar ratio) and a base in a small excess (about 3 times in molar ratio). The reaction is completed in a short time at room temperature, and the desired compound is obtained by purification by silica gel chromatography.
In case of acylation at the 4"- position only, a compound subjected to the acetylation at the 2'- position as explained above is agitated with large excesses of an acylating agent and a base for 15 minutes to overnight at room temperature, then treated in the usual manner and purified by silica gel chromatography to obtain a 2'-O-acetyl-4"-O-acylated compound. The desired compound is obtained by allowing a methanolic solution of the above-mentioned compound to stand for 1 to 2 days at room temperature, and distilling off methanol under a reduced pressure, followed by purification by silica gel chromatography.
In case of acylation at the ]1- position onlyr a 2'-O-acetyl-4"-formylated compound obtained in the above-explained manner is agitated with large excesses of an acylating agent and a base for several hours to several days at room temperature to-about 70C to obtain a 2'-O-acetyl-4"-formyl-ll-acylated compound, which is then heated under reflux for about 3 hours to 3 days in methanol to obtain the desired compound.
In case of acylation at the 12- position only, a 2'-O-acetylated compound obtained in the above-explained manner is agitated overnight with trimethylchlorosilane and tribenzylamine and treated in the usual manner to obtain a ~ !
.3 ~2 3 ~ ~
2'-0-acetyl-11,4"-di-0-silylated compound. A dichloroethane solution of the compound is agitated with large excesses of an acylating agent and a base for two days at 75 - ~0C to obtain a 2'-0-acetyl-11,4"-di-0-silyl-12-0-acylated compound, which is treated in the usual manner and subjected to methanolysis to obtain the desired compound.
In the following, there will be explained the case of introducing an alkyl radical. In case of alkylation at the 4"~ position only, a compound of which the 2'- position is acetylated in the above-explained manner is dissolved in dichloromethane, added with an alkylating agent and a base under cooling with ice, and is let to stand for 30 minutes at room temperature to obtain a 2'-0-acetyl-4"~0-alkylated compound. This compound is dissolved in methanol, then is let to stand for one day at room temperature, and the reaction solution is concentrated under a reduced pressure and is purified by silica gel chromatography to obtain the desired compound.
In case of alkylation at the 11- position only, the compound (2) is reacted with excess amounts of benzyloxycarbonyl chloride and sodium hydrogen carbonate, and the hydroxyl radical in the 2'- position and the 3'-dimethylamino radical are protected by, in the latter case, by a methyl radial of it by the acyl.
2~ It is then dissolved in dimethyl formamide and reacted with an alkylating agent and a base under cooling with ice.
The product is then dissolved in water and ethanol, then subjected to hydrogenolysis in the presence of a palladium-2s- ~3~2~
D
carbon catalyst, and hydrogenated in the presence of formaldehyde to obtain the desired compound.
In case of alkylation at the 12- position only, a compound, of which the 2'-, 4"- and 11- positions are acetylated in the above-explained manner, is dissolved in dimethyl sulfoxide and is let to stand, with a large excess of acetic anhydride, for 96 hours to 1 week at room temperature.
The reaction solution is then concentrated under a reduced pressure, and purified by silica gel chromatography, and the obtained compound is dissolved in methanol and heated with lithium hydroxide at 50C for 4 hours to obtain the desired compound.
Preferred examples of the protecting radicals are acetyl for the 2'- position, formyl and silyl for the 4"-position, and acetyl and silyl for the 11- positionO
A compound (2) having a protective radical can be prepared in processes similar to that explained above.
If thus prepared compound (1) has a protective radical, they may be removed if necessary. The removal of the protective radical can be suitably achieved in the usual manner, for example, by a method using a base (alkaline hydrolysis), a method using hydrazine or a reduction method, according to the kind of the protective radicals. In the method using a base, there can be employed, depending on the kind of the protective radicals and other conditions, for example, a hydroxide of an alkaline metal such as sodium, potassium or lithium or an alkàli earth metal such as calcium 12~
or magnesium, an inorganic base such as a carbonate, a metal alkoxide, an organic amine, an organic base such as quaternary ammonium salt, or a basic ion exchange resin. If the method using a base is conducted in the presence of a solvent, said solvent is usually a hydrophilic organic solvent, water or a mixture thereof.
The reduction method is conducted, for example, in the presence of a reducing metal catalyst, depending on the kind of protective radicals and other conditions, and the examples of such catalyst employable in catalytic reduction include platinum catalysts such as platinum sponge, platinum asbestos, platinum black, platinum oxide and colloidal platinum; palladium catalysts such as palladium sponge, palladium black, palladium oxide, palladium on barium sulfate, 15 palladium on barium carbonate, palladium on activated carbon, colloidal palladium and palladium on silica gel; reduced nickel, nickel, oxide, Raney nickel and Urushibara nickel.
The reduction method is usually conducted in a solvent, which is usually composed of an alcohol such as methanol, ethanol, propyl alcohol or isopropyl alcohol, or ethyl acetate.
The method using a base or the reduction method is usually conducted under cooling or under heating.
In the reaction in which the compound (3) is treated under acidic conditions to prepare the compound (4), there can be employed, for acidification, an organic acid such a~ acetic acid, pyridinium chloride or pyridinium paratoluene sulfonate.
~ ,, 1~2~
~1 D
The reaction temperature is about 0C to 30C, the reaction time is about 30 minutes to 1 hour, and the range of pH in reaction is 1 to 6~ The solvent employable in the reaction is, for example, acetic acid, chloroform, dichloromethane or ether, and the reaction is preferably conducted under agitation.
By subjecting a compound (5') which corresponds to the compound (5) in which R9 is the formula -NH-Rb (wherein Rb is the same meaning as defined above) to N-alkylation, N-alkenylation or N-alkynylation, a compound (6') which corresponds to the compound (6) in which Ra is the formula -N~RC (wherein Rb and Rc have the same meanings as defined above) can be prepared.
The reaction is carried out by reacting a corresponding ketone or aldehyde to the compound ~5') under the reduction conditions. As the reduction conditions, catalytic reduction can be used (see R. K. Clark Jr. and M.
Flyfelder, ANTIBIOTICS AND CHEMOTHERAPY, 7, ~83 (1957)). The catalyst usable therefore may be those as described in the previous item of reductive deprotection, particularly preferable being palladium black, palladium carbon, and Raney nickel. The reaction can be preferably carried out in alcohols (such as methanol and ethanol), ethers (such as tetrahydrofuran and dimethoxyethane) and aqueous mixtures thereof, in the presence of hydrogen gas, under ice cooling to about 80C, preferably around room temperature.
~ 13~ 28~
~ As the reduction condition, reduction by use o a metal hydride may also be used. As the metal hydride, sodium borohydride and sodium cyanoboronydride are preferred.
The reaction is carried out preferably in a solvent such as alcohols (e.g. methanol and ethanol), ethers (e.g.
tetrahydrofuran and dimethoxyethane3, nitriles (e.g.
acetonitrile) and aqueous mixtures thereof, more preferably while maintaining the pH of the reaction mixture at neutral to weakly acidic (pH about 3 to 6), and it is preferable for control of the pH, to add a buffer solution or mineral acid (such as hydrochloric acid), an organic acid (such as acetic acid) or an aqueous solution thereof.
The amount of the metal hydride used is varied, depending on the carbonyl compound used, but it is a slight excess over to about 100 times the theoretical amount, preferably a slight excess to about 10 times, thereof, and it is added suitably with the progress of the reaction.
The reaction is carried out at about -20C to 80C, preferably at a~out 0C to 30C.
The compound (6') can also be synthesized by allowing the compound ~5') to react with, for example, corresponding alkyl, alkenyl or alkynyl halide, an ester, trioxonium salt, etc., in the presence of a base.
Examples of the bases include sodium hydroxide, potassium hydroxide, sodium hydrogen carbonate, potassium carbonate, butyl lithium, phenyl lithium and sodium hydride.
.
, - ~q 13~28~
Examples of the halogen atoms in the halide includ~
chlorine, bromine and iodine, particularly preferably iodine.
Examples of the esters include a sulfate ester and the like.
Typical examples of the trioxonium salts include trimethyloxonium fluoroborate, triethyloxonium fluoroborate, etc.
The reaction reagent is used in an amount of about 1 to lO0 mol equivalent, preferably about 2 to 25 mol equivalent per one mol of the starting compound.
The solvent to be used in the reaction include, for example, haloganated hydrocarbones (such as chloroform and dichloromethane), ether, (such as ethyl ether and tetrahydrofuran), esters (such as ethyl acetate), alcohols (such as methanol and ethanol), etc.
The reaction is carried out under ice cooling (about 0C) to the boiling point of the solvent (about 100C), preferably at room temperature (about 15 to 25C) to about 80C.
The reaction time is about 2 to 48 hours.
By subjecting the foregoing compound (6') as the starting compound to N-alkylation, N-alkenylation or ~-alkynylation reaction, a compound (6") can be prepared, wherein Ra in the compound (6) is the formula - ~ ~ Re ~ in which Rd, Re, Rf and ~ have the same meanings as defined above.
~ 3~286~
_ ,~ _ As the reagent employable in the reaction, t'nere can be mentioned, for example, the corresponding alkyl, alkenyl or alkynyl halide, an ester trioxonium salt, etc.
Examples of the halogen atom~ in the halide include chlorine, bromine and iodine, particularly preferably iodine.
Examples of the esters include a sulfate ester and the like.
Examples of the ester include a sulfate ester and the like.
Typical examples of the trioxonium salts include trimethyloxonium fluoroborate, triethyloxonium fluorobrate, etc.
The reaction reagent is used in an amount of about 1 to 100 mol equivalent, preferably about 2 to 25 mol equivalent per one mol of the starting compound.
The solvent to be used in the reaction include, for example, haloganated hydrocarbons (such as chloroform and dichloromethane), ether (such as ethyl ether and tetrahydrofuran), ester (such as ethyl acetate), alcohols (such as methanol and ethanol), etc.
The reaction is carried out under ice cooling (about 0C) to the boiling point of the solvent (about 100C), preferably at room temperature (about 15 to 25~C) to about 80C.
The reaction time is about 2 hours to 1 week.
From the reaction mixture, after carrying out optionally washing with aqueous sodium carbonate, or aqueous 31 ~3~ 28~
D sodium chloride, drying or concentration, the product can be isolated by filtration of the precipitate formed by addition of an ether or the like to obtain the desired product as a salt of the anion from the reagent used in quaternarization.
The quaternization can be conducted before or after the foregoing acylation reaction and the like, preferably thereafter.
When the reaction mixture is subjected to column chromatography with silica gel or ion exchange resin, using, for example, a mixture of chloroform-metanol added with conc.
aqueous ammonia, a compound with hydroxide ion (OH-) as the anion can be obtained.
The anions of the compound thus obtained can be exchanged with other anions by a conventional means.
The starting compound (5') used in the above reaction can be prepared by treating, for example, de(N-methyl)erythromycin A or bis ~de(N-methyl~ erythromycin A E.
. Flynnt et al., Journal of the American Chemical Society, 77, 310~ (1955), Japanese Laid-open Patent Application No.
912~/1972) under acidic conditions.
The compound (1) thus obtained can be isolated and purified in per se already known methods, for example, concentration, pH alteration~ solvent-transformation, solvent e~traction, lyophilization, crystallization~
recrystallization, distillation, chromatography, etc.
D 3~ 3~28~
The compound (1) may form a salt with an acid.
Examples of such acids include organic acids (for example, ethylsuccinic acid, glycopeptonic acid, stearic acid, propionic acid, lactobionic acid, oxalic acid, maleic acid, fumaric acid, succinic acid, citric acid, lactic acid, trifluoroacetic acid, acetic acid, methanesulfonic acid, paratoluenesulfonic acid, and benzenesulfonic acid~ and mineral acids (for example, sulfuric acid, hydrochloric acid, hydriodic acid, hydrobromic acid, phosphoric acid, and nitric acid).
The starting compound in the process of the present invention can be prepared, for example, by methods reported by W. Slawinski et al., Journal of the Royal Netherlands Chemical Society, 94 236, 1975; V. C. Stephens et at., Antibiotics Annual, 1958-1959, 346; P.H. Jones et al., Journal of Medicinal Chemistry, 15, 631, 1972; J. Tadanier et al., Journal of Organic Chemistry, 39, 2495, 1974; A. Banaszek et al., Roczniki Chemi, 43, 763, 1969; C. W. Pettinga et al., Journal of the American Chemical Society, 76, 569, 1954; P. F.
Wiley et al., Journal of the American Chemical Society, 79, 6074, 1957; J Majer et al., Journal of the American Chemical Society, 99, 1620, 1977; and J. Ro Martin et al., Journal of Antibiotics, 35, 426, 1982 or similar methods or by subjecting the compounds described in the above-mentioned references to the above-described process of the present invention or the conventional known means.
33 ~28~, On the other hand, the starting compounds 9-dihydroerythromycin A 6,9-epoxide and 9-dihydroerythromycin B
6,9 epoxide can be prepared according to the methods reported in Japanese Laid-open Patent Application No. 1588/1974.
The compound (1) or its salt of the present invention has an excellent effect on stimulating the gastrointestinal contraction. Also, no lethal case was observed when the compound (55) described later is oral~y administered to mouse at a dose of 2300 mg/kg. Accordingly, the compound (1) of the present invention may be considered to be low in toxicity.
Thus, the compound (1) or its salt shows an excellent effect for stimulating the gastrointestinal contraction with a low toxicity, and can therefore be utilized as a gastrointestinal contractive motion stimulant for the therapy of digestive malfunctions (nausea, vomiting, want of apetite in gastritis, gastric ulcer, duodenal ulcer, diseases in gallbladder and biliary tract etc.) in mammals (mouse, rat, dog, cow, pig, man, etc.).
The compound (1) of the present invention can be administered orally or non-orally to the above-mentioned mammals. The daily dose thereof, in case of oral administration, is ca. 0.001 - 100 mg/kg in the form of the compound (1), and, in case of non-oral administration, for example, intravenous injection, is ca. 0.0001 - 10 mg/kg.
For example, a compound (32)) to be explained later, induces an extremely strong contraction in the stomach, duodenum and small intestine in dog, by an intravenous 128~
administration of a dose of 1.0 mg/kg The contractive motion is comparable to the strongest one in the gastrointestinal contraction in normal dog. Also a reduced dose in the order of 3 g/kg induces, instead of continuous strong contraction, a contractive motion of an identical pattern with that of the natural contraction into digestive state.
The compound (1) of the present invention can be administered in various forms of pharmaceutical preparations which contains the compound (1) or a pharmaceutically acceptable salt thereof in an amount effective to stimulate gastrointestinal contractive motion and a pharmaceutically acceptable carrier. The preparations may take a variety of forms such as emulsion, hydrated mixture, tablet, solution, powder, granules, capsule, pill, etc. containing additional components. The additional components include pharmacologically permitted vehicle, disintegrator, lubricant, binder, dispersant, plasticizer, etc. As examples of the additional components, the examples of vehicles are lactose, glucose and white sugar; those of disintegrators are starch, sodium alginate, agar powder and carboxymethyl cellulose calcium;
those of lubricants are magnesium stearate, talc and liquid paraffin; those of binders are syrup, gelatin solution, ethanol and pOlyvinyl alcohol; those of dispersants are methyl cellulose, ethyl cellulose and shellac; and those of plasticizers are glycerin and starch.
These preparations can be obtained by methods usually employed in the field of pharmaceutics~
4 ~12~62 ~ - 27580-11 PREFERRED EMBODIMENTS OF THE INVENTION
The gastrointestinal motion was measured in the follo~wing manner (Z. Itoh, Nihon Heikatsu-kin Gakkai Zasshi, 13, 33, 1976).
A mongrel adult dog of a weight of 10-15 kg was anaesthetized and the abdominal cavity was opened, and .
:
~312~6~
_ ~ _ force transducers were chronically sutured on the serosa of the gastrointestinal tract such as gastric bod~, gastric antrum, duodenum, jejunum, etc. in directions capable of recording the contraction of circular muscles. The lead ~7ires were extracted from the back and fixed to the skin. The experiment could be started abou~ 5 days after recovery from such operation, and a dog prepared in this manner can be subjected to experiments for about 6 months. The ~orce transducer, when subjected to a bending stress by the contraction of the gastrointestinal tract where ~he transducer is sutured, allows to record the wave form corresponding to the applied force, on a pen-recording oscillograph, and this method allows to measure the nature and magnitude of the contraction.
The dog was maintained in an experimental cage, and the wave form of contraction can be immediately recorded by connecting the wires of the transducer to the polygraph. The gastrointestinal contractive motion can be divided, from the pattern of contraction, into the in one a period after food intake and it in an interdigestive period. The experiments were conducte~, during the interdigestive period and in an inactive period laclcing the contraction in the stomach. The sample was injected through a silicone tu~e placed in advance in the superior vena cava over lO seconds.
The sample was dissolved in physiological saline to a total volume of 10 ml. and was slowly injected intravenously for a period of ca. 10 seconds.
The gastrointestinal motor stimulating activity (GMSA) is summari~ed in Table l.
3~ ~3~8~
CHa ~CHa l\ OCHa ICHZ ~ CH \1)~ CHa ORZ
CHa Table 1 j ~ C~D~d Rl -R2 - R5 R6 ~ G~SA
~ _ 15 ~5) H CH3C0 H < CH3 +
~9) H CH0 H H " *
~14) H CH3C0 CH3C0 H ~ +
~25) H CH0 CH3S02 H ~ , ~26) H CH3S2 CH2S2 H ,. *
~28) CH3CH2CH2C0 H H H " *
~30) H CH3S2 H H " ~_ (32) H H C~3C0 CH3~0 ~t 33) H - H CH3CH2C0 C~3CH2C0 " *
25 ~36) H H > = S CH3 ~_ ~37) H H > S = 0 "
~ . ~_ . .
:.
31 ' 13128~J
D ~
Compound _ ~
No. Rl R2 R5 R6 ~ GMSA
. .. _ ._ (39) H H > B-Ph " *
(47) H H HCH3SCH2 (50) H H CH3CO H ~ tt (51) H H CH3CH2CO H ~ *
(52) H H CH3CH2C~2CO H ~I ~_ (54~ H H ~C = n t-+ CH3 (55) H H H H-N < -CH3-I
(56) H H CH3CO CH3CO ~ ~t (58) H H CH3S02 H
(59) H CHO CH3S02 H
+ CH3 (60) H H H H -N< -C2H5-I ffl (62)CH3CO H H + CH3 - *
(73) H H CH3(CH2)3CO CH3 +
(7~) ~ ~ CH3(CH2)4CO H ll *
(75) H H H H -N<
H
(77) H H H H ~2H5 ~t ~ C~3 (79) H H H H-N ~ -C2Hs I
~ .
,~
3~
~ 8 ~ 2~580-11 , . - . .
Compound Rl R2 R5 R6 R~ G.~A
_ .
(80) H H H H N~ 1t (81) H H ~ CH3 ff~
., ~ CH
, (82) H H H H-N ~ -CH3~Br CH3 ~
(83) H H H H-N < -CH3~Br ~t ' CH2CH=CH2 ~ CH3 (89) H H ~ ~-N ~ -CH3~Cl ~ :
. . CH2Ph ~ CH3 ~
(90) H H SO2CH3 H -N < -CH3~I ffl '. . C2H5 . ~ CH3 :' 15(9l) H H SO2CH3 H -N < -CH3-I ffl ., . ~ CH3 ~
(92) H H H H-N ~ -CH3~Br ffl ~93) H H H H< C2H5 t~
." _ . C2~5 .~ 20 H
~94) H H H H -N ~ t*
'., ~ ' (95~ H H H H N
., ~3 C2H5 ~) 25(96) H H H H < ~2H5 ~ *
(97 .
,.
. . .~. , .
, ,,:: ' ' :
_ 3q _ 13~286~
.
Compound Rl R2 R5 6 o~ GMSA
.... ~ ~) (98) H H H H ~I tt ~ CH3 (99) H H H H ~ I +
(~) C2H5 ~ CH3 (100) ~ H H H -N ~ -CH3~Br ~t CH2CaCH
~ CH3 ~101) H H COC~3 COCH3 -N ~ C 3 Br *t (102) H H CH3 H -N(CH3)~ t~
(104) H H COC2H5 COCH3 -N(CH3)2 t~
(105) H H COC3H7 COCH3 -N(CH3)2 t-~ CH
~ CH3 ~
(107) H H H H -N ~ -CH3 Br *
, CH2C02CH3 ~ CH3 (108) H H H H -N ~ -CH3~Br *
' CH2C2H
~ CH
(109) H H H H -N < -CH3 Br t~
~ C~
(110) . H H H H -N < -C~3 Br +~
(113) H H H H -N < *
CH2CH=CH2 (115) H , H H H < CH3 t~
, CH2C~2CH3 ~ ~3~2~2 L
.
~ ~ Compound Rl R2 R5 R6 ~ Ç;MSA
_- .... . .
H
(120) H H H H -N< *
CH2CH=CH2 ~3 CH3 (~
(124) ~ E~ H H -~< Br *
(CH2CH=CH2) 2 (~3 CH3 l ~) (125) 1~ H H H-N~CH2CH=CH2~Br *t CE~2C=CH
~3 CH3 ~3 (126) H H H ~-N < Br (CH2C--CH) 2 ~3 CEI3 t~) (136) H H H H-N< CH3 Cl . _ , . . _ . _ 3~2g~
D
CH~ HO ~N~R
HOI~ \~ CH3 I H 0~ /~O~oCHa o H
CHa Table 1' Compound No. R X GMSA
. .
(85) CH3 I
(86) C2H5 I
a (87) (CH2)2CH3 I *
(88) (cH2)3cH3 I
(111) CH3CH=CH2 Br (112) CH2C-CH Br . In Table 1 and and Table l',~*,t*,~t and + of GMSA
indicate that the minimum effectlve concentration required for inducing a gastrointestinal contractive motion in dog, comparable to the spontaneous one in the interdigestive period is in a range of 0.01 - 0.1 ~g/kg, 0.1 - 10 ~g/kg, 10 -30 ~g/kg and 30 - 50 ~g/kg, respectively~
*) The numbers of compounds correspond to those in the examples.
.
~1 ~L3~2~
Exam~_e 1 250 mg of 2-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 1) (V. C Stephens et al., Antibiotics Annual, 1958-1959, 346) was dissolved in 2 ml of dry pyridine, and 0.3 ml of acetyl chloride was added at a time at room temperature and under vigorous agitation. After agitation for 15 minutes, 30 ml of ethyl acetate was added. The obtained ethyl acetate solution was washed with the saturated aqueous solution of sodium hydrogen carbonate, ~hen with the saturated aqueous solution of sodium chloride, then dried with anhydrous sodium sulfate, and the solvent was distilled off to obtain a crude product.
The crude product was purified by silica gel column chromatography ~developed with a 50 : 1 : 0.01 mixed solvent of chloroform, methanol and concentrated aqueous ammonia) to obtain 100 mg (yield 38%) of 2',4"-di-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 2) as white powder.
Example 2 303 mg of the compound 1, 0.3 ml of propionyl chloride and 2 ml of dry pyridine were employed in the process of Example 1 to obtain 143 mg (yield 44%~ of 2'-O-acetyl-4"-O-propionyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 3) as white powder.
D ~ ~3~286~
~g Exa~ple 3 303 mg of the compound 1 was dissolved in 1 ml of dry pyridine and agitated overnight with 0.07 ml of benzoyl chloride. Thereafter the same process as in Example 1 was adopted to obtain 127 mg (yield 37%) of 2'-O-acetyl-4"-O-benzoyl-8,9-anhydroerythromycin A 6,9-hemiketal ~compound 4) in white powder.
Example 4 100 mg of the compound 2 obtained in Example 1 was dissolved in 2 ml of methanol, and agitated overnight at room temperature. A crude product, obtained by distilling o f the solvent, was purified by silica gel column chromatography (developed by a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia) to obtain 35 mg (yield 37~) of 4"-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 5) in white powder.
Example 5 143 mg of the compound 3 obtained in Example 2 was dissolved in 2 ml of methanol, and processed in the same manner as in Example 4 to obtain 83 mg (yield 61%) of 4"-O-propionyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 6) in white powder.
Example 6 127 mg of the compound 4 ob~ained in Example 3 was dissolved in 2 ml of methanol, and was processed in the same ~4 ~3128~2 .... , ~
manner as in Example 4 to obtain 92 mg (yield 77%) of 4"-O-benzoyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 7) in white powder.
ExamPle 7 59 mg of 2'-~-acetyl-4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 8) (J. Tadanier et al. r Journal of Organic Chemistry, 39, 2495, 1974) was dissolved in 1 ml of me~hanol, and was processed in the same manner as in Example 4 to obtain 29 mg of 4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 9) in white powder.
Example 8 303 mg of the compound 1 was dissolved in 2 ml of dry pyridine, and 0.3 ml of crotonyl chloride was added at a time under vigorous agitation at room temperature. After agitation for 15 minutes, 30 ml of ethyl acetate was added.
The obtained ethyl acetate solution was washed with the saturated aqueous solution of sodium hydrogen carbonate and with the saturated aqueous solution of sodium chloride, then dried with anhydrous sodium sulfate and the solvent was distilled off.
The obtained residue was dissolved in 2 ml of methanol, and agitated overnight at room temperature. A crude product obtained by removing the solvent by distillation was purified by silica gel column chromatography (developed with a ~s 13~28 7, t 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia) to obtain 31 mg (yield 10%) of 4"-O-crotonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 10~ in white powder.
Example 9 205 mg of the compound 1, 2 ml of dry pyridine and 0.3 ml of butyryl chloride were processed in the same manner as in Example 8 to obtain 18 mg (yield 8%) of 4"-O-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 11) in white powder.
Example 10 303 mg of the compound 1, 2 ml of dry pyridine and 0.4 ml of isovaleryl chloride were processed in the same manner as in Example 8 to obtain 40 mg (yield 12%) of 4"-O-isovaleryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 12) in white powder.
Example 11 303 mg of the compound 1, 2 ml of dry pyridine, and 0.4 ml. of ethylmalonyl chloride were processed in the same manner as in Example 8 to obtain 40 mg (yield 12%) of 4"-O-ethylmalonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 13) in white powder.
3~2~
Example 12 205 mg of the compound 1 was dissolved in 1 ml o~
dry pyridine, and agitated for 4 days at room temperature with 0.25 ml of acetic anhydride. The mixture was diluted with 30 ml of ethyl acetate, then washed with the saturated aqueous solution of sodium hydrogen carbonate and the saturated aqueous solution of sodium chloride, and dried with anhydrous sodium sulfate. The residue, obtained by distilling off the solvent, was dissolved in 1 ml of methanol and agitated overnight at room temperature. A crude product, obtained by removing the solvent by distillation, was purified with silica gel column chromatography (developed with a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia water to obtain 129 mg (yield 60%) of 11,4"-di O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 1~) in white powder.
Example 13 205 mg of the compound 1, 1 ml of dry pyridine and 0.25 ml of propionic anhydride were processed in the same manner as in Example 12 to obtaine 105 mg (yield 47%) of 11,4"-di-O-propionyl-8,9-anhydroerythromycin A ~,9-hemiketal (compound li) in white powder.
Example 14 205 mg of the compound 1 was dissolved in 1 ml of dry py~idine, and agitated with 0.5 ml of butyric anhydride ~1 ~ 3~28~
for 7 days at room temperature. It was thereafter processed in the same manner as in Example 12 to obtain 113 mg (yield 40~) of 11,4"-di-O-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 16) in white powder Example 15 205 mg of the compound 1 was dissolved in 1 ml of dry pyridine, and agitated with 0.5 ml of benzoyl chloride for 3 days at roo~ temperature. The mixture was then processed in the same manner as in Example 12 to obtain 107 mg (yield 35%) of 11,4"-di-O-benzoylerythromycin A 6,9-hemiketal (compound 17) in white powder.
Example 16 184 mg of the compound 1 was dissolved in 2 ml of dry pyridine, and agitated with 440 mg of benzylsulfonyl chloride for 5 hours at room temperature. The mixture was then diluted with 30 ml of ethyl acetate, washed with the saturated aqueous solution of sodium hydrogen carbonate and with the saturated aqueous solution of sodium chloride, and dried with anhydrous sodium sulfate. The residue obtained by removing the solvent by distillation was dissolved in 2 ml of methanol, and agitated overnight at room temperature. A crude product obtained by removing the solvent by distillation was purified by silica gel column chromatography (developed by a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia ) to obtain 127 mg (yield 51%) of 11,4'-~ ~3~2~
di-O-benzylsulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 18) in white powder.
Example 17 227 mg of the compound 1 was dissolved in 2 ml of dry pyridine, and agitated with 527 mg of paratoluenesulfonyl chloride for 2 days at 50C. The mixture was processed in the same manner as in Example 16 to obtain 81 mg (yield 26%) of 11,4"-di~O-paratoluenesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 19) in white powder.
The compound (1) or its salt of the present invention has an excellent effect on stimulating the gastrointestinal contraction. Also, no lethal case was observed when the compound (55) described later is oral~y administered to mouse at a dose of 2300 mg/kg. Accordingly, the compound (1) of the present invention may be considered to be low in toxicity.
Thus, the compound (1) or its salt shows an excellent effect for stimulating the gastrointestinal contraction with a low toxicity, and can therefore be utilized as a gastrointestinal contractive motion stimulant for the therapy of digestive malfunctions (nausea, vomiting, want of apetite in gastritis, gastric ulcer, duodenal ulcer, diseases in gallbladder and biliary tract etc.) in mammals (mouse, rat, dog, cow, pig, man, etc.).
The compound (1) of the present invention can be administered orally or non-orally to the above-mentioned mammals. The daily dose thereof, in case of oral administration, is ca. 0.001 - 100 mg/kg in the form of the compound (1), and, in case of non-oral administration, for example, intravenous injection, is ca. 0.0001 - 10 mg/kg.
For example, a compound (32)) to be explained later, induces an extremely strong contraction in the stomach, duodenum and small intestine in dog, by an intravenous 128~
administration of a dose of 1.0 mg/kg The contractive motion is comparable to the strongest one in the gastrointestinal contraction in normal dog. Also a reduced dose in the order of 3 g/kg induces, instead of continuous strong contraction, a contractive motion of an identical pattern with that of the natural contraction into digestive state.
The compound (1) of the present invention can be administered in various forms of pharmaceutical preparations which contains the compound (1) or a pharmaceutically acceptable salt thereof in an amount effective to stimulate gastrointestinal contractive motion and a pharmaceutically acceptable carrier. The preparations may take a variety of forms such as emulsion, hydrated mixture, tablet, solution, powder, granules, capsule, pill, etc. containing additional components. The additional components include pharmacologically permitted vehicle, disintegrator, lubricant, binder, dispersant, plasticizer, etc. As examples of the additional components, the examples of vehicles are lactose, glucose and white sugar; those of disintegrators are starch, sodium alginate, agar powder and carboxymethyl cellulose calcium;
those of lubricants are magnesium stearate, talc and liquid paraffin; those of binders are syrup, gelatin solution, ethanol and pOlyvinyl alcohol; those of dispersants are methyl cellulose, ethyl cellulose and shellac; and those of plasticizers are glycerin and starch.
These preparations can be obtained by methods usually employed in the field of pharmaceutics~
4 ~12~62 ~ - 27580-11 PREFERRED EMBODIMENTS OF THE INVENTION
The gastrointestinal motion was measured in the follo~wing manner (Z. Itoh, Nihon Heikatsu-kin Gakkai Zasshi, 13, 33, 1976).
A mongrel adult dog of a weight of 10-15 kg was anaesthetized and the abdominal cavity was opened, and .
:
~312~6~
_ ~ _ force transducers were chronically sutured on the serosa of the gastrointestinal tract such as gastric bod~, gastric antrum, duodenum, jejunum, etc. in directions capable of recording the contraction of circular muscles. The lead ~7ires were extracted from the back and fixed to the skin. The experiment could be started abou~ 5 days after recovery from such operation, and a dog prepared in this manner can be subjected to experiments for about 6 months. The ~orce transducer, when subjected to a bending stress by the contraction of the gastrointestinal tract where ~he transducer is sutured, allows to record the wave form corresponding to the applied force, on a pen-recording oscillograph, and this method allows to measure the nature and magnitude of the contraction.
The dog was maintained in an experimental cage, and the wave form of contraction can be immediately recorded by connecting the wires of the transducer to the polygraph. The gastrointestinal contractive motion can be divided, from the pattern of contraction, into the in one a period after food intake and it in an interdigestive period. The experiments were conducte~, during the interdigestive period and in an inactive period laclcing the contraction in the stomach. The sample was injected through a silicone tu~e placed in advance in the superior vena cava over lO seconds.
The sample was dissolved in physiological saline to a total volume of 10 ml. and was slowly injected intravenously for a period of ca. 10 seconds.
The gastrointestinal motor stimulating activity (GMSA) is summari~ed in Table l.
3~ ~3~8~
CHa ~CHa l\ OCHa ICHZ ~ CH \1)~ CHa ORZ
CHa Table 1 j ~ C~D~d Rl -R2 - R5 R6 ~ G~SA
~ _ 15 ~5) H CH3C0 H < CH3 +
~9) H CH0 H H " *
~14) H CH3C0 CH3C0 H ~ +
~25) H CH0 CH3S02 H ~ , ~26) H CH3S2 CH2S2 H ,. *
~28) CH3CH2CH2C0 H H H " *
~30) H CH3S2 H H " ~_ (32) H H C~3C0 CH3~0 ~t 33) H - H CH3CH2C0 C~3CH2C0 " *
25 ~36) H H > = S CH3 ~_ ~37) H H > S = 0 "
~ . ~_ . .
:.
31 ' 13128~J
D ~
Compound _ ~
No. Rl R2 R5 R6 ~ GMSA
. .. _ ._ (39) H H > B-Ph " *
(47) H H HCH3SCH2 (50) H H CH3CO H ~ tt (51) H H CH3CH2CO H ~ *
(52) H H CH3CH2C~2CO H ~I ~_ (54~ H H ~C = n t-+ CH3 (55) H H H H-N < -CH3-I
(56) H H CH3CO CH3CO ~ ~t (58) H H CH3S02 H
(59) H CHO CH3S02 H
+ CH3 (60) H H H H -N< -C2H5-I ffl (62)CH3CO H H + CH3 - *
(73) H H CH3(CH2)3CO CH3 +
(7~) ~ ~ CH3(CH2)4CO H ll *
(75) H H H H -N<
H
(77) H H H H ~2H5 ~t ~ C~3 (79) H H H H-N ~ -C2Hs I
~ .
,~
3~
~ 8 ~ 2~580-11 , . - . .
Compound Rl R2 R5 R6 R~ G.~A
_ .
(80) H H H H N~ 1t (81) H H ~ CH3 ff~
., ~ CH
, (82) H H H H-N ~ -CH3~Br CH3 ~
(83) H H H H-N < -CH3~Br ~t ' CH2CH=CH2 ~ CH3 (89) H H ~ ~-N ~ -CH3~Cl ~ :
. . CH2Ph ~ CH3 ~
(90) H H SO2CH3 H -N < -CH3~I ffl '. . C2H5 . ~ CH3 :' 15(9l) H H SO2CH3 H -N < -CH3-I ffl ., . ~ CH3 ~
(92) H H H H-N ~ -CH3~Br ffl ~93) H H H H< C2H5 t~
." _ . C2~5 .~ 20 H
~94) H H H H -N ~ t*
'., ~ ' (95~ H H H H N
., ~3 C2H5 ~) 25(96) H H H H < ~2H5 ~ *
(97 .
,.
. . .~. , .
, ,,:: ' ' :
_ 3q _ 13~286~
.
Compound Rl R2 R5 6 o~ GMSA
.... ~ ~) (98) H H H H ~I tt ~ CH3 (99) H H H H ~ I +
(~) C2H5 ~ CH3 (100) ~ H H H -N ~ -CH3~Br ~t CH2CaCH
~ CH3 ~101) H H COC~3 COCH3 -N ~ C 3 Br *t (102) H H CH3 H -N(CH3)~ t~
(104) H H COC2H5 COCH3 -N(CH3)2 t~
(105) H H COC3H7 COCH3 -N(CH3)2 t-~ CH
~ CH3 ~
(107) H H H H -N ~ -CH3 Br *
, CH2C02CH3 ~ CH3 (108) H H H H -N ~ -CH3~Br *
' CH2C2H
~ CH
(109) H H H H -N < -CH3 Br t~
~ C~
(110) . H H H H -N < -C~3 Br +~
(113) H H H H -N < *
CH2CH=CH2 (115) H , H H H < CH3 t~
, CH2C~2CH3 ~ ~3~2~2 L
.
~ ~ Compound Rl R2 R5 R6 ~ Ç;MSA
_- .... . .
H
(120) H H H H -N< *
CH2CH=CH2 ~3 CH3 (~
(124) ~ E~ H H -~< Br *
(CH2CH=CH2) 2 (~3 CH3 l ~) (125) 1~ H H H-N~CH2CH=CH2~Br *t CE~2C=CH
~3 CH3 ~3 (126) H H H ~-N < Br (CH2C--CH) 2 ~3 CEI3 t~) (136) H H H H-N< CH3 Cl . _ , . . _ . _ 3~2g~
D
CH~ HO ~N~R
HOI~ \~ CH3 I H 0~ /~O~oCHa o H
CHa Table 1' Compound No. R X GMSA
. .
(85) CH3 I
(86) C2H5 I
a (87) (CH2)2CH3 I *
(88) (cH2)3cH3 I
(111) CH3CH=CH2 Br (112) CH2C-CH Br . In Table 1 and and Table l',~*,t*,~t and + of GMSA
indicate that the minimum effectlve concentration required for inducing a gastrointestinal contractive motion in dog, comparable to the spontaneous one in the interdigestive period is in a range of 0.01 - 0.1 ~g/kg, 0.1 - 10 ~g/kg, 10 -30 ~g/kg and 30 - 50 ~g/kg, respectively~
*) The numbers of compounds correspond to those in the examples.
.
~1 ~L3~2~
Exam~_e 1 250 mg of 2-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 1) (V. C Stephens et al., Antibiotics Annual, 1958-1959, 346) was dissolved in 2 ml of dry pyridine, and 0.3 ml of acetyl chloride was added at a time at room temperature and under vigorous agitation. After agitation for 15 minutes, 30 ml of ethyl acetate was added. The obtained ethyl acetate solution was washed with the saturated aqueous solution of sodium hydrogen carbonate, ~hen with the saturated aqueous solution of sodium chloride, then dried with anhydrous sodium sulfate, and the solvent was distilled off to obtain a crude product.
The crude product was purified by silica gel column chromatography ~developed with a 50 : 1 : 0.01 mixed solvent of chloroform, methanol and concentrated aqueous ammonia) to obtain 100 mg (yield 38%) of 2',4"-di-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 2) as white powder.
Example 2 303 mg of the compound 1, 0.3 ml of propionyl chloride and 2 ml of dry pyridine were employed in the process of Example 1 to obtain 143 mg (yield 44%~ of 2'-O-acetyl-4"-O-propionyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 3) as white powder.
D ~ ~3~286~
~g Exa~ple 3 303 mg of the compound 1 was dissolved in 1 ml of dry pyridine and agitated overnight with 0.07 ml of benzoyl chloride. Thereafter the same process as in Example 1 was adopted to obtain 127 mg (yield 37%) of 2'-O-acetyl-4"-O-benzoyl-8,9-anhydroerythromycin A 6,9-hemiketal ~compound 4) in white powder.
Example 4 100 mg of the compound 2 obtained in Example 1 was dissolved in 2 ml of methanol, and agitated overnight at room temperature. A crude product, obtained by distilling o f the solvent, was purified by silica gel column chromatography (developed by a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia) to obtain 35 mg (yield 37~) of 4"-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 5) in white powder.
Example 5 143 mg of the compound 3 obtained in Example 2 was dissolved in 2 ml of methanol, and processed in the same manner as in Example 4 to obtain 83 mg (yield 61%) of 4"-O-propionyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 6) in white powder.
Example 6 127 mg of the compound 4 ob~ained in Example 3 was dissolved in 2 ml of methanol, and was processed in the same ~4 ~3128~2 .... , ~
manner as in Example 4 to obtain 92 mg (yield 77%) of 4"-O-benzoyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 7) in white powder.
ExamPle 7 59 mg of 2'-~-acetyl-4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 8) (J. Tadanier et al. r Journal of Organic Chemistry, 39, 2495, 1974) was dissolved in 1 ml of me~hanol, and was processed in the same manner as in Example 4 to obtain 29 mg of 4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 9) in white powder.
Example 8 303 mg of the compound 1 was dissolved in 2 ml of dry pyridine, and 0.3 ml of crotonyl chloride was added at a time under vigorous agitation at room temperature. After agitation for 15 minutes, 30 ml of ethyl acetate was added.
The obtained ethyl acetate solution was washed with the saturated aqueous solution of sodium hydrogen carbonate and with the saturated aqueous solution of sodium chloride, then dried with anhydrous sodium sulfate and the solvent was distilled off.
The obtained residue was dissolved in 2 ml of methanol, and agitated overnight at room temperature. A crude product obtained by removing the solvent by distillation was purified by silica gel column chromatography (developed with a ~s 13~28 7, t 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia) to obtain 31 mg (yield 10%) of 4"-O-crotonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 10~ in white powder.
Example 9 205 mg of the compound 1, 2 ml of dry pyridine and 0.3 ml of butyryl chloride were processed in the same manner as in Example 8 to obtain 18 mg (yield 8%) of 4"-O-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 11) in white powder.
Example 10 303 mg of the compound 1, 2 ml of dry pyridine and 0.4 ml of isovaleryl chloride were processed in the same manner as in Example 8 to obtain 40 mg (yield 12%) of 4"-O-isovaleryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 12) in white powder.
Example 11 303 mg of the compound 1, 2 ml of dry pyridine, and 0.4 ml. of ethylmalonyl chloride were processed in the same manner as in Example 8 to obtain 40 mg (yield 12%) of 4"-O-ethylmalonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 13) in white powder.
3~2~
Example 12 205 mg of the compound 1 was dissolved in 1 ml o~
dry pyridine, and agitated for 4 days at room temperature with 0.25 ml of acetic anhydride. The mixture was diluted with 30 ml of ethyl acetate, then washed with the saturated aqueous solution of sodium hydrogen carbonate and the saturated aqueous solution of sodium chloride, and dried with anhydrous sodium sulfate. The residue, obtained by distilling off the solvent, was dissolved in 1 ml of methanol and agitated overnight at room temperature. A crude product, obtained by removing the solvent by distillation, was purified with silica gel column chromatography (developed with a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia water to obtain 129 mg (yield 60%) of 11,4"-di O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 1~) in white powder.
Example 13 205 mg of the compound 1, 1 ml of dry pyridine and 0.25 ml of propionic anhydride were processed in the same manner as in Example 12 to obtaine 105 mg (yield 47%) of 11,4"-di-O-propionyl-8,9-anhydroerythromycin A ~,9-hemiketal (compound li) in white powder.
Example 14 205 mg of the compound 1 was dissolved in 1 ml of dry py~idine, and agitated with 0.5 ml of butyric anhydride ~1 ~ 3~28~
for 7 days at room temperature. It was thereafter processed in the same manner as in Example 12 to obtain 113 mg (yield 40~) of 11,4"-di-O-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 16) in white powder Example 15 205 mg of the compound 1 was dissolved in 1 ml of dry pyridine, and agitated with 0.5 ml of benzoyl chloride for 3 days at roo~ temperature. The mixture was then processed in the same manner as in Example 12 to obtain 107 mg (yield 35%) of 11,4"-di-O-benzoylerythromycin A 6,9-hemiketal (compound 17) in white powder.
Example 16 184 mg of the compound 1 was dissolved in 2 ml of dry pyridine, and agitated with 440 mg of benzylsulfonyl chloride for 5 hours at room temperature. The mixture was then diluted with 30 ml of ethyl acetate, washed with the saturated aqueous solution of sodium hydrogen carbonate and with the saturated aqueous solution of sodium chloride, and dried with anhydrous sodium sulfate. The residue obtained by removing the solvent by distillation was dissolved in 2 ml of methanol, and agitated overnight at room temperature. A crude product obtained by removing the solvent by distillation was purified by silica gel column chromatography (developed by a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia ) to obtain 127 mg (yield 51%) of 11,4'-~ ~3~2~
di-O-benzylsulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 18) in white powder.
Example 17 227 mg of the compound 1 was dissolved in 2 ml of dry pyridine, and agitated with 527 mg of paratoluenesulfonyl chloride for 2 days at 50C. The mixture was processed in the same manner as in Example 16 to obtain 81 mg (yield 26%) of 11,4"-di~O-paratoluenesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 19) in white powder.
9 g of 8,9-anhydroerythromycin A 6,9-hemiketal cyclic-11,12 carbonate (compound 20) (W. Slawinski et al., Journal of the Royal Netherlands Chemical Society, 94, 236, 1975) was dissolved in 100 ml of chloroform and agitated with 4 ml of pyridine and 3 ml of acetic anhydride for 45 minutes at room temperature. This reaction solution was washed with the saturated aqueous solution of sodium hydrogen carbonate and with the saturated aqueous solution of sodium chloride, then dried with anhydrous sodium sulfate, and the solvent was distilled off to obtain white powder of 2'-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal cyclic-11,12-carbonate (compound 21) quantatively in substantially pure state.
D ~ 13~28~J
Exa~ple 19 235 mg of the compound 21 obtained in Example 18 was dissolved in 1 ml of dry pyridine, and agitated with 0.5 ml of butyric anhydride for 2 days at room temperature. The reaction solution was diluted with 30 ml of ethyl acetate, then washed with the saturated aqueous solution of sodium hydrogen carbonate and with the saturated aqueous solution of sodium chloride, dried with anhydrous sodium sulfate and the solvent was distilled off to obtain a crude product.
The crude product was purified by silica gel column chromatography (developed by a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia) to obtain 78 mg (yield 31%) of 2'-O-acetyl-4"-O-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal-cyclic-11,12-carbonate (compound 22) in white powder.
Example 20 59 mg of the compound 22 obtained in Example 19 was dissolved in 1 ml of methanol, and agitated overnight at room temperature. A crude product obtained by removing the solvent by distillation was purified by silica gel column chromatography (developed by a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia) to obtain 40 mg (yield 72%) of 4"-O~butyryl-8,9-anhydroerythromycin A 6,9-hemiketal-cyclic-11,12-carbonate (compound 23) in white powder.
2- ~3~28~
.1.,~
Example 21 79 mg of 11-O-methanesulfonyl-2'-O-acetyl-4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 24) ~J. Tadeniel et al., Journal of Organic Chemistry, 39, 2495, 1974) was dissolved in 1 ml of methanol, and agitated overnight at room temperature. A crude product ohtained by removing the solvent by distillation was purified by silica gel column chromatography (developed by a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia) to obtain 40 mg (yield 52%) of ll-O-methanesulfonyl-4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 25) in white powder.
Example 22 150 mg of the compound 1 was dissolved in 2 ml of dry pyridine, and 46 1 of methanesulfonyl chloride was added thereto under agitation and under cooling with ice. After completion of the addition, agitation was continued for 1 hour under cooling with ice, and then for 2 hours at room temperature. The same process as in Example 16 was thereafter conducted to obtain 123 mg (yield 78%) of 11,4"-di-O-methanesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 26) in which powder.
Low mass (SIMS) m/e : 872 (M ~ H)+
The structure, specific rotatory power and NMR
spectrum values of the compounds obtained in Example 1 to 22 are summarized in Tables 2 and 3.
~, 2~2 CH3 CHaN_CHa RRs ~ ~CH3 a /~ 1~ OCH3 ICHZ O~/~CH \~ CHa ~ORZ
Table 2 ~ . ~ .... . ~
Compound R1 ~2 R5 ~6 [~] ~ ~c 1.0, CHC13) _ ... .. _ _.__ . _ _ _ 2 CH3CO CH3CO H H -44.4 3 CH3CO CH3CH2CO H H -46.0 tc 0.5) 4 CH3CO PhCO H H -56.2 : 5 H CH3CO H H -43.4 6 H CH3CH2CO H M -38.0 7 H PhCO H H -59.2 9 H CHO . H H -41.8 O
H CH3 ~ ~ H H -43.4 : 11 H CH3CH2CH2CO H H -33.4 : 12 H CH3 ~ H H -35.0 13 EtO - ~ ~ ~ H H -34.8 14: ~ H CH3CO CH3CO ~ H -21.4 H CH3CH2CO CH3CH2CO H -25.6 ~;25 16 ~ -25.4 ~ .
:
~3128~'~
s~
..~
,....... . __ Compound Rl R2 R5 R6 ~D (c 1~0, cHcl3) ~ _ 17 H PhCO PhCO H -;0.0 18 H PhCH2S02 PHCH2S02 H -37.6 l9 H CH3 ~ _S02 CH3- ~ -S2 H -9.0 21CH3CO H ~ = -33.6 22CH3CO CH3cH2cH2co > Z -41.2 23 H CH3CH2CH2C ~ = o -42.6 H CHO CH3So2 X -32.4 26 H CH3502 CH3S02 H -34.8 In Table 2, Ph is phenyl and Et is ethyl.
The numbers of compounds corresponds to those in the Examples.
)o '5 ~ - ~- 13~28~
0 _ ~' ,_ ,~
, ~i , ` C W~
0 ~ o~
~ ~ ~ W
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Example 23 200 mg of 8,9-anhydroerythromycin A 6,9-hemiketal (compound 27) (V. C. Stephens et al., Antibiotics Annual, 1958-1959, 346) was dissolved in 3.4 ml of CHC13, then added with 0.22 ml of anhydrous pyridine and 0.34 ml of butyric anhydride, and was allowed to stand for 20 minutes at room temperature. The reaction solution was diluted with 20 ml of CHC13~ and washed with 20 ml of the saturated aqueous solution of sodium hydrogen carbonate and 20 ml of water. The CHC13 layer was dried with anhydrous sodium sulfate, and concentrated under a reduced pressure to obtain a colorless glassolike substance. Said substance was purified by silica gel column chromatography, utilizing a developing mixed solvent of CHC13 : CH30H : conc. NH40H = 40 : 1 : 0.01, to obtain 209 mg (yield 95.2%) of 2'~0-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 28) in white powder.
Rf value : 0.36 ~CHC13 : CH30H : conc. NH40H = 10 : 1 :
O.Olj Carrier : silica gel (Merck, West Germany), High mass : 785.4936 (calcd. for C41E171N13: 785-4921)-The same carrier was employed also in the thin layer chromatography in the following Examples.
200 mg of 2'-O-acetyl-8,9~anhydroerythromycin A 6,9-hemiketal (compound 29) (V C. Stephens et al., Antibiotics Annual, 1958-1959, 346) was dissolved in 4 ml of anhydrous D ~ 13128~2 pyridine, and added with 0.12 ml of methanesulfonyl chloride under cooling with ice. After 30 minutes, the same process as that for producing the compound 28 was conducted to obtain a colorless glass-like substance. This substance was dissolved, without purification in 8 ml of methanol and was let to stand at roorn temperature. After one day, the reaction solution was concentrated under reduced pressure to obtain a colorless glass-like substance. This substance was purified by silica gel column chromatography, utilizing a mixed developing solvent of CHC13 : CH30H : conc. NH40H = 30 : 1 : 0.01, to obtain 116 mg (yield 52.3%) of 4"-0-methanesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 30) in white powder.
Rf value : 0.20 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 793.427 (calcd. for C3gH67N014S :
793.427).
Example 25 300 mg of 2'-0-acetyl-4"-0-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 31) (=compound 8) (Journal of The Chemical Society, 39, 2495, 1974) was dissolved in 8.1 ml of CHC13, and heated under reflux with 5 mg of 4-dimethylaminopyridine, 15 ml of triethylamine and 1.2 ml of acetic anhydride. The reaction mixture was cooled to room temperature after 3 days, and the same process as that for obtaining the compound 28 was conducted to obtain a pale yellow glass-like substance. This substance was dissolved, ~1 ~3~28~
without purification, in 12 ml of methanol, and heated under reflux. The solution was cooled to room temperature after 3 days and concentrated under reduced pressure to obtain a pale yellow glass-like substance. This substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H = 50 : 1 : 0.01, to obtain 136 mg (yield 44.5%) of 11,12-di-0-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 32) in white powder.
Rf value : 0.15 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), low mass : M~ 799, high mass : 799.4703 (calcd.
for C41H6gN014 : 799.4713).
Example 26 300 mg of the compound 31 was dissolved in 8.1 ml-of CHC13, then added with 5 mg of 4-dimethylaminopyridine, 2.2 ml of triethylamine and 2.2 ml of propionic anhydride, and processed in the same manner as in the preparation of the compound 32 to obtain 68 mg (yield 21.5~) of 11~12-di-0-propionyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 33) in white powder.
Rf value : 0.16 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 827.502 (calcd for C43H73N014 :
827.502).
~..
12~
Example_27 300 mg of the compound 31 was dissolved in 8.1 ml of C~C13, then added with 5 mg of 4-dimethylaminopyridine, 2.2 ml of triethylamine and 2.6 ml of butyric anhydride, and processed in the same manner as in the preparation of the compound 32 to obtain 141 mg ~yield 43.2%) of 11,12-di-0-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 34) in white powder.
Rf value : 0.18 (CHC13 : CH30H : conc. N~40H = 10 : 1 :
0.01), low mass : M+ 855, high mass : 855.5343 (calcd.
for C4sH77N014 : 855.5339).
Example_28 1.0 g of the compound 31 was dissolved in 10 ml of toluene, and heated under reflux with 929 mg of thiocarbonyl diimidazole. The solution was cooled to room temperature after 4 hours and processed in the same manner as in the preparation of the compound 28 to obtain a yellow glass-like substance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H = 100 : 1 :
0.01, to obtain 373 mg (yield 36.0%) of 2'-0-acetyl~4"-0-formyl-8,9-anhydroerythromycin A 6,9-hemiketal-cyclic-11,12-thiocarbonate (compound 35) in white powder.
Rf value : 0.45 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass: 827.4091 (calcd. for C41H65N014S :
827.4121).
~7 ~3~2~
Example 29 100 mg of the compound 35 was dissolved in 4 ml of methanol and heated under reflux. After 3 days, the solution was cooled to room temperature, and concentrated under reduced pressure to obtain a colorless glass-like substance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H = 50 : 1 : 0.01, to obtain 63 mg (yield 68.8%) of 8,9-anhydroerythromycin A 6,9-hemiketal-cyclic-11,12 thiocarbonate (compound 36) in white powder.
Rf value : 0.20 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 757.406 (calcd~ for C38H63N12S :
757~407).
lS Example 30 170 mg of the compound 27 was dissolved in 1,1 ml of methanol, then added with 213 mg of potassium carbonate and 27 1 of ethylene sulfite and agitated at room temperature.
After 2 days, the solution was processed in the same manner as in the preparation of the compound 28 to obtain a colorless glass-like substance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H = 10 : 1 : 0.01~ to obtain 72 mg (yield 39.8%~ of 8,9-anhydroerythromycin A 6,9-hemiketal-11,12-sulfite (compound 37) in white powder.
~ 13~8~2 !
Rf. value : 0.09 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 761.401 (calcd. for C37H63NO13S
761.~01).
Example 31 200 mg of the compound 29 was dissolved in 10 ml of benzene, and heated under reflux with 32 mg of phenylboric acid. The solution was cooled to room temperature after 2 hours and processed in the same manner as in the preparation of the compound 28 to obtain 216 mg (yield 97.8~) of 2'-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal-11,12-phenylboronate (compound 38) in white powder.
This compound was so pure that it did not require purification.
Rf value : 0.40 (CHC13 : CH30H : conc. NH40H =
D ~ 13~28~J
Exa~ple 19 235 mg of the compound 21 obtained in Example 18 was dissolved in 1 ml of dry pyridine, and agitated with 0.5 ml of butyric anhydride for 2 days at room temperature. The reaction solution was diluted with 30 ml of ethyl acetate, then washed with the saturated aqueous solution of sodium hydrogen carbonate and with the saturated aqueous solution of sodium chloride, dried with anhydrous sodium sulfate and the solvent was distilled off to obtain a crude product.
The crude product was purified by silica gel column chromatography (developed by a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia) to obtain 78 mg (yield 31%) of 2'-O-acetyl-4"-O-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal-cyclic-11,12-carbonate (compound 22) in white powder.
Example 20 59 mg of the compound 22 obtained in Example 19 was dissolved in 1 ml of methanol, and agitated overnight at room temperature. A crude product obtained by removing the solvent by distillation was purified by silica gel column chromatography (developed by a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia) to obtain 40 mg (yield 72%) of 4"-O~butyryl-8,9-anhydroerythromycin A 6,9-hemiketal-cyclic-11,12-carbonate (compound 23) in white powder.
2- ~3~28~
.1.,~
Example 21 79 mg of 11-O-methanesulfonyl-2'-O-acetyl-4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 24) ~J. Tadeniel et al., Journal of Organic Chemistry, 39, 2495, 1974) was dissolved in 1 ml of methanol, and agitated overnight at room temperature. A crude product ohtained by removing the solvent by distillation was purified by silica gel column chromatography (developed by a 50 : 1 : 0.01 mixture of chloroform, methanol and concentrated aqueous ammonia) to obtain 40 mg (yield 52%) of ll-O-methanesulfonyl-4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 25) in white powder.
Example 22 150 mg of the compound 1 was dissolved in 2 ml of dry pyridine, and 46 1 of methanesulfonyl chloride was added thereto under agitation and under cooling with ice. After completion of the addition, agitation was continued for 1 hour under cooling with ice, and then for 2 hours at room temperature. The same process as in Example 16 was thereafter conducted to obtain 123 mg (yield 78%) of 11,4"-di-O-methanesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 26) in which powder.
Low mass (SIMS) m/e : 872 (M ~ H)+
The structure, specific rotatory power and NMR
spectrum values of the compounds obtained in Example 1 to 22 are summarized in Tables 2 and 3.
~, 2~2 CH3 CHaN_CHa RRs ~ ~CH3 a /~ 1~ OCH3 ICHZ O~/~CH \~ CHa ~ORZ
Table 2 ~ . ~ .... . ~
Compound R1 ~2 R5 ~6 [~] ~ ~c 1.0, CHC13) _ ... .. _ _.__ . _ _ _ 2 CH3CO CH3CO H H -44.4 3 CH3CO CH3CH2CO H H -46.0 tc 0.5) 4 CH3CO PhCO H H -56.2 : 5 H CH3CO H H -43.4 6 H CH3CH2CO H M -38.0 7 H PhCO H H -59.2 9 H CHO . H H -41.8 O
H CH3 ~ ~ H H -43.4 : 11 H CH3CH2CH2CO H H -33.4 : 12 H CH3 ~ H H -35.0 13 EtO - ~ ~ ~ H H -34.8 14: ~ H CH3CO CH3CO ~ H -21.4 H CH3CH2CO CH3CH2CO H -25.6 ~;25 16 ~ -25.4 ~ .
:
~3128~'~
s~
..~
,....... . __ Compound Rl R2 R5 R6 ~D (c 1~0, cHcl3) ~ _ 17 H PhCO PhCO H -;0.0 18 H PhCH2S02 PHCH2S02 H -37.6 l9 H CH3 ~ _S02 CH3- ~ -S2 H -9.0 21CH3CO H ~ = -33.6 22CH3CO CH3cH2cH2co > Z -41.2 23 H CH3CH2CH2C ~ = o -42.6 H CHO CH3So2 X -32.4 26 H CH3502 CH3S02 H -34.8 In Table 2, Ph is phenyl and Et is ethyl.
The numbers of compounds corresponds to those in the Examples.
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Example 23 200 mg of 8,9-anhydroerythromycin A 6,9-hemiketal (compound 27) (V. C. Stephens et al., Antibiotics Annual, 1958-1959, 346) was dissolved in 3.4 ml of CHC13, then added with 0.22 ml of anhydrous pyridine and 0.34 ml of butyric anhydride, and was allowed to stand for 20 minutes at room temperature. The reaction solution was diluted with 20 ml of CHC13~ and washed with 20 ml of the saturated aqueous solution of sodium hydrogen carbonate and 20 ml of water. The CHC13 layer was dried with anhydrous sodium sulfate, and concentrated under a reduced pressure to obtain a colorless glassolike substance. Said substance was purified by silica gel column chromatography, utilizing a developing mixed solvent of CHC13 : CH30H : conc. NH40H = 40 : 1 : 0.01, to obtain 209 mg (yield 95.2%) of 2'~0-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 28) in white powder.
Rf value : 0.36 ~CHC13 : CH30H : conc. NH40H = 10 : 1 :
O.Olj Carrier : silica gel (Merck, West Germany), High mass : 785.4936 (calcd. for C41E171N13: 785-4921)-The same carrier was employed also in the thin layer chromatography in the following Examples.
200 mg of 2'-O-acetyl-8,9~anhydroerythromycin A 6,9-hemiketal (compound 29) (V C. Stephens et al., Antibiotics Annual, 1958-1959, 346) was dissolved in 4 ml of anhydrous D ~ 13128~2 pyridine, and added with 0.12 ml of methanesulfonyl chloride under cooling with ice. After 30 minutes, the same process as that for producing the compound 28 was conducted to obtain a colorless glass-like substance. This substance was dissolved, without purification in 8 ml of methanol and was let to stand at roorn temperature. After one day, the reaction solution was concentrated under reduced pressure to obtain a colorless glass-like substance. This substance was purified by silica gel column chromatography, utilizing a mixed developing solvent of CHC13 : CH30H : conc. NH40H = 30 : 1 : 0.01, to obtain 116 mg (yield 52.3%) of 4"-0-methanesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 30) in white powder.
Rf value : 0.20 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 793.427 (calcd. for C3gH67N014S :
793.427).
Example 25 300 mg of 2'-0-acetyl-4"-0-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 31) (=compound 8) (Journal of The Chemical Society, 39, 2495, 1974) was dissolved in 8.1 ml of CHC13, and heated under reflux with 5 mg of 4-dimethylaminopyridine, 15 ml of triethylamine and 1.2 ml of acetic anhydride. The reaction mixture was cooled to room temperature after 3 days, and the same process as that for obtaining the compound 28 was conducted to obtain a pale yellow glass-like substance. This substance was dissolved, ~1 ~3~28~
without purification, in 12 ml of methanol, and heated under reflux. The solution was cooled to room temperature after 3 days and concentrated under reduced pressure to obtain a pale yellow glass-like substance. This substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H = 50 : 1 : 0.01, to obtain 136 mg (yield 44.5%) of 11,12-di-0-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 32) in white powder.
Rf value : 0.15 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), low mass : M~ 799, high mass : 799.4703 (calcd.
for C41H6gN014 : 799.4713).
Example 26 300 mg of the compound 31 was dissolved in 8.1 ml-of CHC13, then added with 5 mg of 4-dimethylaminopyridine, 2.2 ml of triethylamine and 2.2 ml of propionic anhydride, and processed in the same manner as in the preparation of the compound 32 to obtain 68 mg (yield 21.5~) of 11~12-di-0-propionyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 33) in white powder.
Rf value : 0.16 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 827.502 (calcd for C43H73N014 :
827.502).
~..
12~
Example_27 300 mg of the compound 31 was dissolved in 8.1 ml of C~C13, then added with 5 mg of 4-dimethylaminopyridine, 2.2 ml of triethylamine and 2.6 ml of butyric anhydride, and processed in the same manner as in the preparation of the compound 32 to obtain 141 mg ~yield 43.2%) of 11,12-di-0-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 34) in white powder.
Rf value : 0.18 (CHC13 : CH30H : conc. N~40H = 10 : 1 :
0.01), low mass : M+ 855, high mass : 855.5343 (calcd.
for C4sH77N014 : 855.5339).
Example_28 1.0 g of the compound 31 was dissolved in 10 ml of toluene, and heated under reflux with 929 mg of thiocarbonyl diimidazole. The solution was cooled to room temperature after 4 hours and processed in the same manner as in the preparation of the compound 28 to obtain a yellow glass-like substance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H = 100 : 1 :
0.01, to obtain 373 mg (yield 36.0%) of 2'-0-acetyl~4"-0-formyl-8,9-anhydroerythromycin A 6,9-hemiketal-cyclic-11,12-thiocarbonate (compound 35) in white powder.
Rf value : 0.45 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass: 827.4091 (calcd. for C41H65N014S :
827.4121).
~7 ~3~2~
Example 29 100 mg of the compound 35 was dissolved in 4 ml of methanol and heated under reflux. After 3 days, the solution was cooled to room temperature, and concentrated under reduced pressure to obtain a colorless glass-like substance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H = 50 : 1 : 0.01, to obtain 63 mg (yield 68.8%) of 8,9-anhydroerythromycin A 6,9-hemiketal-cyclic-11,12 thiocarbonate (compound 36) in white powder.
Rf value : 0.20 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 757.406 (calcd~ for C38H63N12S :
757~407).
lS Example 30 170 mg of the compound 27 was dissolved in 1,1 ml of methanol, then added with 213 mg of potassium carbonate and 27 1 of ethylene sulfite and agitated at room temperature.
After 2 days, the solution was processed in the same manner as in the preparation of the compound 28 to obtain a colorless glass-like substance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H = 10 : 1 : 0.01~ to obtain 72 mg (yield 39.8%~ of 8,9-anhydroerythromycin A 6,9-hemiketal-11,12-sulfite (compound 37) in white powder.
~ 13~8~2 !
Rf. value : 0.09 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 761.401 (calcd. for C37H63NO13S
761.~01).
Example 31 200 mg of the compound 29 was dissolved in 10 ml of benzene, and heated under reflux with 32 mg of phenylboric acid. The solution was cooled to room temperature after 2 hours and processed in the same manner as in the preparation of the compound 28 to obtain 216 mg (yield 97.8~) of 2'-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal-11,12-phenylboronate (compound 38) in white powder.
This compound was so pure that it did not require purification.
Rf value : 0.40 (CHC13 : CH30H : conc. NH40H =
10: 1: 0.01)~
Example 32 216 mg of the compound 38 obtained in Example 31 was dissolved in 8.6 ml of methanol and was let to stand at room temperature. After 1 day, the solution was concentrated under a reduced pressure to obtain a colorless glass-like substance.
The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. N~40H = S0 : 1 : 0.01, to obtain 199 mg (yield 97.0~) of 8,9-anhydroerythromycin A 6,9-hemiketal-11,12-phenylboronate (compound 39) in white powder.
:
.... ..
~, ~3~2~
;L~ _ ~ Rf value : 0.40 (CHC13 : CH30H : conc. NH40H =
- 10 : 1 : O . 01) .
Example 33 1.40 g of the compound 29 was dissolved in 14 ml of dry pyridine, then added with 1.1 ml of chlorotrimethylsilane and was let to stand at room temperature. After 2 hours, the solution was processed in the same manner as in the preparation of the compound 28 to obtain 1.50 g (yield 90.0~) of 2'-O-acetyl-11,4"-di-O-trimethylsilyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 40) as a colorless glass-like substance.
Rf value : 0.43 (CHC13 : CH30H : conc. NH40H =
10: 1: 0.01)~
Example 34 750 mg of the compound 40 was dissolved in 3 ml of 1,2-dichloromethane, then added with 2.40 g of tribenzylamine and 0.72 ml of acetyl chloride under cooling, and, after 10 minutes, heated at 75C under agitation. After 3 days, the solution was processed in the same manner as in the preparation of the compound 28 to ob~ain a pale yellow solid substance. The obtained solid substance was dissolved, without purification, in 30 ml of methanol and heated at 50C.
The solution was cooled to room temperature after 1 day and concentrated under reduced pressure to obtain a pale yellow solid substance. The obtained solid substance was purified by ~2~
6~
silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H = 50 : 1 : 0.01, to obtain 163 mg (yield 25.9~) of 12-0-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 41) as white powder.
Rf value : 0.15 (CHC13 : CH30H : conc~ NH40H = 10 : 1 :
0.01), high mass : 757.460 (calcd. for C3gH67N013 :
757.460) ExamPle 35 800 mg of the compound 40 was dissolved in 3.2 ml of 1,2-dichloroethane, then added with 2l56 g of tribenzylamine and 0.85 ml of propionyl chloride under cooling, and, after 10 minutes, heated at 75C under agita~ion. After 3 days, the solution was processed in the same manner as in the preparation of the compound 30 to obtain 273 mg ~yield 39.9~) of 12-0-propionyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 42) as white powder.
Rf value : 0.17 tCHC13 : CH30H : conc. NH40H =
10 : 1 : 0.01), high Tnass: 771.476 (calcd. for C40H6gN013 : 771,476).
Example 36 400 mg of the compound 29 was dissolved in 0.8 ml of dichloromethane, then added with 0.2 ml of N,N-diisopropylethylamine and 0022 ml of methoxyethoxymethyl chloride under cooling, and, after 10 minutes, was let to D
stand at room temperature. After 3 hours, the same process as in the preparation of the compound 28 was conducted to obtain a colorless glass-like substance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc.
NH40H = 100 : 1 : 0.01, to obtain 250 mg (yield 56.0~) of 2'-0-acetyl-4"-0-methoxyethoxymethyl-8,9-anhydroerythromycin A
6,9-hemiketal (compound 43) as white powder.
Rf value : 0.43 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 845.513 (calcd. for C43H7sNOls :
845.513).
Example 37 150 mg of the compound 43 obtained in Example 36 was dissolved in 6 ml of methanol and was let to stand at room temperature. After one day, the reaction solution was concentrated under reduced pressure to obtain a colorless glass-like substance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H =
30 : 1 : 0.01, to obtain 85 mg (yield 59.6%) of 4"-0-methoxy-ethoxymethyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 44) in white powder.
Rf value : 0.27 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass 803.502 (calcd. for C41H73N014 :
8030502).
~ ~31~
.~ ~
The structure, specific rotatory power and NMR
spectrum of the compounds obtained in Examples 23 - 37 are summarized in Tables 4 and 5.
..
'~, 3~2~
D
CHa CH~ CH3 CH ~ ~ CHa 3 ~ ~ OCH3 3 0 ~ CHa o RZ
T a b 1 e 4 CH3 -Compound _ _ z a N ~ Rl ~2 Rs Rs ~ a~D(cl.O,CHCla) .._ 28 CHaCH2CHzCO H H H - 37.4 H CH3SOz H H - 44.6 32 H H CHaCO CHaCO - 30.0 33 H H CH3CHzCO CHaCHzCO - 22.0 34 H HCHaCHzCHzCO CHaCHzCHzCO - 19.0 CHaCO CHO > - S 1 8.6 36 H H > = S + 25.0 37 H H > S = O - 30.2 38 CHaCO H > B - Ph - 54.0 39 H H > B - Ph - 60.2 40CHaCO (CH3~aSi (&H3)3Si H
41 H H H CHaCO - 35.6 : ~ 42 H H H CHaCNzCO - 65.2 (c 0.5) 43CH3CO CH30CHzCHzOCHz H H - 30.4 44H CH30CHzCN20CHz H H - 34.0 ~ : ::
: In Table 4 Ph is phenyl~ Si is sylyl.
The number of compounds correspond to those in Examples.
...
~ 312 8 -D
_ cq _ , _ _ - ~q _ cq l- " c o~
c~ c~ o r~
O O
~ , _~ _ -r 2 = -- --`
_ C~
~ cq cq a 8 cq - r, c~ q O C~ C' Q
. c~ ~ ? ? ~
_ I I I C C ~ ~ _ _~ ..~
~ U~ _ .S1 `,~ ~ oe` ~ o ~ Q
cqc~l c ~ c~ c~ c~
Q~ o ~ c~ ~ ~ c-~c~ ~ c c~
O .
~ .. _ ._ ,,, ~ L~ .
0L^ :1 Q ~ J Cq -- ~ Q ~ t~
Y _t~ C~ C`~ C~
~ .
~L~ 2~ c~ c~ ~ ~ c~ c~
Z ~ . .
~ .
I
~1 _ ~ .
_ I.D L'~ L^ L~ ~ L~ 1~ L~ ~ L~ ~ ~ U~
~ _ _ _ _ _ _ _ _l _ _ _ _ _ _ . ...... __ ~_., _.__ .___ _ _ .__ O ~ o c~ r~ e~ L~
~ O
0~
_ _ __ . _ . _ . __ ~3~2~
~7 D
Example ~8 300 mg of the compound 27 was dissolved in 3 ml of dry pyridine, and added with 0.4 ml of acetic anhydride. The reaction mixture was heated at 50C for 24 hours. The reaction solution was poured into 10 ml of the cold saturated aqueous solution of sodium hydrogen carbonate, and the resulting product was extracted with chloroform (3 x 10 ml).
The extracting solution was dried with anhydrous sodium sulfate, and the solvent was removed under reduced pressure to obtain a crude product. This product was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g ;
eluting solvent:chloroform-methanol (50 ~ 1)) to obtain 290 mg of 11,2',4"-tri-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 45) as white powder.
Rf value : 0.38 (CHC13 : CH30H = 20 : 1).
Example 39 290 mg of the compound 45 obtained in Example 38 was dissolved in 3 ml of dry dimethyl sulfoxide, and added with 1 ml. of acetic anhydride. The reaction mixture was let to stand for 95 hours at room temperature. The reaction solution was concentrated under reduced pressure ( 2mm Hg), and the residue was dissolved in 20 ml of chloroform. The obtained chloroform solution was washed with 10 ml of the saturated aqueous solution of sodium hydrogen carbonate, then dried with - anhydrous sodium sulfate, and the solvent was distilled off ~3~2~ J
under reduced pressure. The crude produce was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g.; eluting solvent: chloroform-methanol (50 : 11), to obtain 173 mg of 1l,2'~4ll-tri-o-acetyl-l2~o-methylthiomethyl-8r9-anhydroerythromycin A 6,9-hemiketal (compound 46) as white powder.
Rf value : 0.39 (CHC13 : CH30H = 20 : 1).
Example 40 173 mg of the compound 46 obtained in Example 39 was dissolved in 5 ml of methanol, and added with 20 mg of lithium hydroxide. The reaction solution was heated at 50C
for 4 hours under agitation. After concentration under reduced pressure, the residue was dissolved in 20 ml of chloroform. The chloroform solution was washed with 10 ml of water, then dried with anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure. The crude product was purified by silica gel column chromatography (Merck Art 7734 silica gel 15 g; eluting solvent : chloroform-methanol (30 : 1)), to obtain 118 mg of 12-O-methylthiomethyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 47) was white powder.
Rf value : 0.16 (CHC13 : CH30~ - 10 : 1).
ExamPle 41 300 mg oE the compound 8 was dissolved in 3 ml of dry pyridine, and added with 0.3 ml of acetic anhydride. The i ~12~
,~
mixture was heated at 50C for 24 hours. The reaction solution was poured into 10 ml of the cold saturated aqueous solution of sodium hydrogen carbonate, and the resulting product was extracted with chloroform (3 x 10 ml). The extracting solution was dried with anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure to obtain a crude product. This product was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g, eluting solvent : chloroform-methanol (50 : 1)) to obtain 195 mg of 11,2'-di-0-acetyl-4"-0-formyl-8,9-anhydroerythromycin A
6,9-hemidetal (compound 48) as white powder.
Rf value : 0.37 (CHC13 : CH30H = 10 : 1) high mass :
827.4689 (calcd. for C42H6gNOls : 827.4663).
Example 42 195 mg of the compound 48 obtained in Example 41 was dissolved in 5 ml of methanol, and the solution was heated under reflux for 1 hour. Then the solvent was distilled off under reduced pressure to obtain a crude product. This product was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g, eluting solvent :
chloroform-methanol (30 : 1)) to obtain 155 mg of ll-0-acetyl-4"-0-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 49) as white powder.
Rf value : 0.28 (CHC13 : CH30H = 10 : 1) Ji 1'~
D ~-Example_43 210 mg of the compound 43 obtained in Example 41 was dissolved in 5 ml of metahnol, and the solution was heated under reflux for 45 hours. Then the solvent was distilled off under reduced pressure ~o obtain a crude product. This product was purified by silica gel column chromatography tMerck Art 7734 silica gel 20 g, eluding solvent :
chloroform-methanol (30 : 1)) to obtain 158 mg o ll-0-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal tcomPound 50) as white powder.
Rf value : 0.21 (CHC13 : C~30H = 10 : 1).
Example 44 155 mg of the compound 49 obtained in Example 42 was processed in the same manner as in Example 43 to obtain 115 mg of ll-0-actyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 50) as white powder.
Example 45 300 mg of the compound 8 was dissolved in 3 ml of dry pyridine, and added with 0.3 ml of acetic anhydride. The reaction mixture was heated at 50C for 24 hours. The reaction solution was poured into 10 ml of the cold saturated aqueous solution of sodium hydrogen carbonate, and the resulting product was extracted with chloroform (3 x 10 ml).
The extract was dried with anhydrous sodium sulfate, and ~, 2 ~ ~ ~d g ~ the solvent was distilled off under reduced pressure. The residue was dissolved in 5 ml of methanol, and heated under reflux for 45 hours. The solvent was distilled off under reduced pressure, and the residue was purified by silica gel column chromatography to obtain 156 mg of 11-0-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 50) as white powder.
Example_46 300 mg of the compound 8 and 0.3 ml of propionic anhydride were reacted according to the method of Example 45, and the protection was removed with methanol. The crude product was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g, eluting solvent : chloroform-methanol (30 ~ o obtain 152 mg of ll-0-propionyl-8,9-- anhydroerythromycin A 6,9-hemiketal (compound 51) as white powder.
Rf value : 0.21 (CHC13 : CH30H) = lO l).
Example 47 300 mg of the compound 8 and 0.3 ml of butyric anhydride were reacted and after removal of the protection according to the process of Example 45, a crude product was obtained. This product was purified by silica gel column chromatography ~Merck Art 7734 silica gel 20 g, eluting solvent : chloroform-methanol (30 : l) to obtain 146 mg of 1~ 1 3 ~ 2 8 ~ ~
ll-O-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 52) as white powder.
Rf value : 0.21 (CHC13 : CH30H = 10 : 1) Example 48 300 mg of the compound 8 and 0.3 ml of benzoyl chloride were reacted and after removal of the protection according to the process of Example 45, a crude product was obtained~ This product was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g, eluting solvent : chloroform-methanol (30 : 1)) to obtain 155 mg of ll-O-benzoyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 53) as white powder.
Rf value : 0.20 (CHC13 : CH30H = 10 : 1) Example 49 200 mg of erythromycin A was dissolved in 2 ml of CHC13, then added with 78 1 of 2-methoxypropene and 64 mg of pyridinium chloride and let to stand at room temperature.
After 1 day, the reaction solution was diluted with 20 ml of CHC13, and washed with 20 ml of the saturated a~ueous solution of sodium hydrogen carbonate and 20 ml of water. The CHC13 layer was dried with anhydrous sodium sulfated and concentrated under a reduced pressure to obtain a colorless glass-like sub~tance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a 1~ ~31 2862 D
developing solvent system of CHC13 : CH30H : conc. NH40H = 30 : 1 : 0.01, to obtain 194 mg (94.0~ of 11,12-0-isopropylidene-8,9-anhydroerythromycin A 6, 9-hemiketal (compound 54) as colorless powder.
Rf value : 0.14 (C~C13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 755.4856 (calcd. for C40H6gN012 :
755.4815).
The structure, specific rotatory power and NMR
spectrum of the compounds obtained in Examples 38 - 49 are summarized in Tables 6 and 7.
~4 - ~ 3 ~ 2 ., . .~
CH3 CH~ CH3 CsH ~ ~ CH3 H3 ~ ~ OCH3 CHa ~l CH3 ~ CHa _ CH3 T a b 1 e 6 CompGund za I~ . Rl R2 R~ R~~ a ~p (cl.O,CHCl3) CH3CO CH3CO CH3CO H - 30.6 46 CH3CO CH3CO CHaCO CH3SCH2 - 31.6 47 H H H GH3SCHz - 28.6 48 CH3CO CHO CH3CO H 25.6 49 H CHO CH3CO H - 18.6 H H CH3CO H - 18.0 51 H . H CH3CHzCO H ~ 19.2 52 H H CH3CHzCHzCO H - 20.4 53 H H PhCO H - 38.0 54 H H ~C = - 24.8 - - : CH3 In the Table 6 , Ph is phenyl.
The numbers of compounds correspond to those in E~amples.
., , 3 ~ 2 D I ~ 0 .. o , _, U~
~ U~
c o a)~,, .. 0 , O1'1 r~ Q - ~ _ ~ o ~ o O OC`~
a: -- N U~ _ _ _ _ .~ _ _ ~
. ! ~ -- C.:) Q c~
O O `
a O c~- - c c ~ D
C c~ N
~> ~ .. ~ C
a) ,~ Q
_ U~ U~
Ql ~ ~ ~ mN
a) l .
11~ ---- - - ._ ...... , _ ~1 ~n a ~ o !~ N r~
Ql _ ~ ~o ~ ~l .
0 ~
c~ _ _ _ _ _ _ _. _ _ h ,... . _ .. _ ... __ __ .. _ .. _ O L'~ ) Q O _ C~ ~7 .. , E~ o ~ "~
... ' ! . . _ _ i 13~2~
", . ~ _ Example_50 100 mg of the compound 27 was dissolved in 1 ml of chloroform and stirred for 2 hours with addition of 40 1 of methyl iodide. After most of the solvent was distilled off, 5 ml of ether was added and the precipitate formed was filtered.
The precipitate was washed with ether and dried to obtain 65 mg (yield 54%) of 8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 55) in white powder.
Example 51 By using 30 mg of the compound 32 and 15 1 of methyl iodide, the same processing as in Example 50 was conducted to obtain 18 mg (yield 51%) of 11,12-di-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 56) in white powder.
Example 52 By using 79 mg of 11-O-methanesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 57) and 29 1 of methyl iodide, the same processing as in Example 50 was conducted to obtain 55 mg (yield 58%) of ll-O-methanesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 58), in white powder.
~3~,g~7J
~g 3~Éxample 53 ., ` By using 78 mg of the compound 25 and 59 1 of methyl iodide, the same processing as in Example 50 was conducted to obtain 67 mg (yield 74%) of ll-O-methane-sulfonyl-4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 59) in pale yellow powder.
Example 54 200 mg of the compound 27 was dissolved in 4 1 of chloroform, then 0.5 ml of ethyl iodide was added thereto and the mixture was refluxed for 20 hours. After most of the solvent was distilled off under reduced pressure, 10 ml of ether was added and a precipitate formed was filtered. The precipitate was washed with ether and dried to obtain 145 mg (yield 60~) of 8,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 60) in white powder.
Example 55 200 mg of the compound 27 was dissolved in 4 ml of chloroform, then O.S ml of propyl iodide was added thereto and the mixture was refluxed for 48 hours. After the same processing as in Example 54, 120 mg (yield 48~) of 8,3-anhydroerythromycin A 6,9-hemike~al propyl iodide (compound 61) was obtained in white powder.
2 g ~ ~J
Example 56 200 mg of the compound (1~ and 0.2 ml of methyl iodide were employed to carry out the same processing as in Example 50. As the result, 154 mg (yield 65~) of 2'-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 62) was obtained in white powder.
The structural formulae of the compounds obtained in Examples 50 to 56 and their physical properties are shown in Table 8 and Table 9, respectively.
..
Example 32 216 mg of the compound 38 obtained in Example 31 was dissolved in 8.6 ml of methanol and was let to stand at room temperature. After 1 day, the solution was concentrated under a reduced pressure to obtain a colorless glass-like substance.
The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. N~40H = S0 : 1 : 0.01, to obtain 199 mg (yield 97.0~) of 8,9-anhydroerythromycin A 6,9-hemiketal-11,12-phenylboronate (compound 39) in white powder.
:
.... ..
~, ~3~2~
;L~ _ ~ Rf value : 0.40 (CHC13 : CH30H : conc. NH40H =
- 10 : 1 : O . 01) .
Example 33 1.40 g of the compound 29 was dissolved in 14 ml of dry pyridine, then added with 1.1 ml of chlorotrimethylsilane and was let to stand at room temperature. After 2 hours, the solution was processed in the same manner as in the preparation of the compound 28 to obtain 1.50 g (yield 90.0~) of 2'-O-acetyl-11,4"-di-O-trimethylsilyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 40) as a colorless glass-like substance.
Rf value : 0.43 (CHC13 : CH30H : conc. NH40H =
10: 1: 0.01)~
Example 34 750 mg of the compound 40 was dissolved in 3 ml of 1,2-dichloromethane, then added with 2.40 g of tribenzylamine and 0.72 ml of acetyl chloride under cooling, and, after 10 minutes, heated at 75C under agitation. After 3 days, the solution was processed in the same manner as in the preparation of the compound 28 to ob~ain a pale yellow solid substance. The obtained solid substance was dissolved, without purification, in 30 ml of methanol and heated at 50C.
The solution was cooled to room temperature after 1 day and concentrated under reduced pressure to obtain a pale yellow solid substance. The obtained solid substance was purified by ~2~
6~
silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H = 50 : 1 : 0.01, to obtain 163 mg (yield 25.9~) of 12-0-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 41) as white powder.
Rf value : 0.15 (CHC13 : CH30H : conc~ NH40H = 10 : 1 :
0.01), high mass : 757.460 (calcd. for C3gH67N013 :
757.460) ExamPle 35 800 mg of the compound 40 was dissolved in 3.2 ml of 1,2-dichloroethane, then added with 2l56 g of tribenzylamine and 0.85 ml of propionyl chloride under cooling, and, after 10 minutes, heated at 75C under agita~ion. After 3 days, the solution was processed in the same manner as in the preparation of the compound 30 to obtain 273 mg ~yield 39.9~) of 12-0-propionyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 42) as white powder.
Rf value : 0.17 tCHC13 : CH30H : conc. NH40H =
10 : 1 : 0.01), high Tnass: 771.476 (calcd. for C40H6gN013 : 771,476).
Example 36 400 mg of the compound 29 was dissolved in 0.8 ml of dichloromethane, then added with 0.2 ml of N,N-diisopropylethylamine and 0022 ml of methoxyethoxymethyl chloride under cooling, and, after 10 minutes, was let to D
stand at room temperature. After 3 hours, the same process as in the preparation of the compound 28 was conducted to obtain a colorless glass-like substance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc.
NH40H = 100 : 1 : 0.01, to obtain 250 mg (yield 56.0~) of 2'-0-acetyl-4"-0-methoxyethoxymethyl-8,9-anhydroerythromycin A
6,9-hemiketal (compound 43) as white powder.
Rf value : 0.43 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 845.513 (calcd. for C43H7sNOls :
845.513).
Example 37 150 mg of the compound 43 obtained in Example 36 was dissolved in 6 ml of methanol and was let to stand at room temperature. After one day, the reaction solution was concentrated under reduced pressure to obtain a colorless glass-like substance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a developing solvent system of CHC13 : CH30H : conc. NH40H =
30 : 1 : 0.01, to obtain 85 mg (yield 59.6%) of 4"-0-methoxy-ethoxymethyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 44) in white powder.
Rf value : 0.27 (CHC13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass 803.502 (calcd. for C41H73N014 :
8030502).
~ ~31~
.~ ~
The structure, specific rotatory power and NMR
spectrum of the compounds obtained in Examples 23 - 37 are summarized in Tables 4 and 5.
..
'~, 3~2~
D
CHa CH~ CH3 CH ~ ~ CHa 3 ~ ~ OCH3 3 0 ~ CHa o RZ
T a b 1 e 4 CH3 -Compound _ _ z a N ~ Rl ~2 Rs Rs ~ a~D(cl.O,CHCla) .._ 28 CHaCH2CHzCO H H H - 37.4 H CH3SOz H H - 44.6 32 H H CHaCO CHaCO - 30.0 33 H H CH3CHzCO CHaCHzCO - 22.0 34 H HCHaCHzCHzCO CHaCHzCHzCO - 19.0 CHaCO CHO > - S 1 8.6 36 H H > = S + 25.0 37 H H > S = O - 30.2 38 CHaCO H > B - Ph - 54.0 39 H H > B - Ph - 60.2 40CHaCO (CH3~aSi (&H3)3Si H
41 H H H CHaCO - 35.6 : ~ 42 H H H CHaCNzCO - 65.2 (c 0.5) 43CH3CO CH30CHzCHzOCHz H H - 30.4 44H CH30CHzCN20CHz H H - 34.0 ~ : ::
: In Table 4 Ph is phenyl~ Si is sylyl.
The number of compounds correspond to those in Examples.
...
~ 312 8 -D
_ cq _ , _ _ - ~q _ cq l- " c o~
c~ c~ o r~
O O
~ , _~ _ -r 2 = -- --`
_ C~
~ cq cq a 8 cq - r, c~ q O C~ C' Q
. c~ ~ ? ? ~
_ I I I C C ~ ~ _ _~ ..~
~ U~ _ .S1 `,~ ~ oe` ~ o ~ Q
cqc~l c ~ c~ c~ c~
Q~ o ~ c~ ~ ~ c-~c~ ~ c c~
O .
~ .. _ ._ ,,, ~ L~ .
0L^ :1 Q ~ J Cq -- ~ Q ~ t~
Y _t~ C~ C`~ C~
~ .
~L~ 2~ c~ c~ ~ ~ c~ c~
Z ~ . .
~ .
I
~1 _ ~ .
_ I.D L'~ L^ L~ ~ L~ 1~ L~ ~ L~ ~ ~ U~
~ _ _ _ _ _ _ _ _l _ _ _ _ _ _ . ...... __ ~_., _.__ .___ _ _ .__ O ~ o c~ r~ e~ L~
~ O
0~
_ _ __ . _ . _ . __ ~3~2~
~7 D
Example ~8 300 mg of the compound 27 was dissolved in 3 ml of dry pyridine, and added with 0.4 ml of acetic anhydride. The reaction mixture was heated at 50C for 24 hours. The reaction solution was poured into 10 ml of the cold saturated aqueous solution of sodium hydrogen carbonate, and the resulting product was extracted with chloroform (3 x 10 ml).
The extracting solution was dried with anhydrous sodium sulfate, and the solvent was removed under reduced pressure to obtain a crude product. This product was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g ;
eluting solvent:chloroform-methanol (50 ~ 1)) to obtain 290 mg of 11,2',4"-tri-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 45) as white powder.
Rf value : 0.38 (CHC13 : CH30H = 20 : 1).
Example 39 290 mg of the compound 45 obtained in Example 38 was dissolved in 3 ml of dry dimethyl sulfoxide, and added with 1 ml. of acetic anhydride. The reaction mixture was let to stand for 95 hours at room temperature. The reaction solution was concentrated under reduced pressure ( 2mm Hg), and the residue was dissolved in 20 ml of chloroform. The obtained chloroform solution was washed with 10 ml of the saturated aqueous solution of sodium hydrogen carbonate, then dried with - anhydrous sodium sulfate, and the solvent was distilled off ~3~2~ J
under reduced pressure. The crude produce was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g.; eluting solvent: chloroform-methanol (50 : 11), to obtain 173 mg of 1l,2'~4ll-tri-o-acetyl-l2~o-methylthiomethyl-8r9-anhydroerythromycin A 6,9-hemiketal (compound 46) as white powder.
Rf value : 0.39 (CHC13 : CH30H = 20 : 1).
Example 40 173 mg of the compound 46 obtained in Example 39 was dissolved in 5 ml of methanol, and added with 20 mg of lithium hydroxide. The reaction solution was heated at 50C
for 4 hours under agitation. After concentration under reduced pressure, the residue was dissolved in 20 ml of chloroform. The chloroform solution was washed with 10 ml of water, then dried with anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure. The crude product was purified by silica gel column chromatography (Merck Art 7734 silica gel 15 g; eluting solvent : chloroform-methanol (30 : 1)), to obtain 118 mg of 12-O-methylthiomethyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 47) was white powder.
Rf value : 0.16 (CHC13 : CH30~ - 10 : 1).
ExamPle 41 300 mg oE the compound 8 was dissolved in 3 ml of dry pyridine, and added with 0.3 ml of acetic anhydride. The i ~12~
,~
mixture was heated at 50C for 24 hours. The reaction solution was poured into 10 ml of the cold saturated aqueous solution of sodium hydrogen carbonate, and the resulting product was extracted with chloroform (3 x 10 ml). The extracting solution was dried with anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure to obtain a crude product. This product was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g, eluting solvent : chloroform-methanol (50 : 1)) to obtain 195 mg of 11,2'-di-0-acetyl-4"-0-formyl-8,9-anhydroerythromycin A
6,9-hemidetal (compound 48) as white powder.
Rf value : 0.37 (CHC13 : CH30H = 10 : 1) high mass :
827.4689 (calcd. for C42H6gNOls : 827.4663).
Example 42 195 mg of the compound 48 obtained in Example 41 was dissolved in 5 ml of methanol, and the solution was heated under reflux for 1 hour. Then the solvent was distilled off under reduced pressure to obtain a crude product. This product was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g, eluting solvent :
chloroform-methanol (30 : 1)) to obtain 155 mg of ll-0-acetyl-4"-0-formyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 49) as white powder.
Rf value : 0.28 (CHC13 : CH30H = 10 : 1) Ji 1'~
D ~-Example_43 210 mg of the compound 43 obtained in Example 41 was dissolved in 5 ml of metahnol, and the solution was heated under reflux for 45 hours. Then the solvent was distilled off under reduced pressure ~o obtain a crude product. This product was purified by silica gel column chromatography tMerck Art 7734 silica gel 20 g, eluding solvent :
chloroform-methanol (30 : 1)) to obtain 158 mg o ll-0-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal tcomPound 50) as white powder.
Rf value : 0.21 (CHC13 : C~30H = 10 : 1).
Example 44 155 mg of the compound 49 obtained in Example 42 was processed in the same manner as in Example 43 to obtain 115 mg of ll-0-actyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 50) as white powder.
Example 45 300 mg of the compound 8 was dissolved in 3 ml of dry pyridine, and added with 0.3 ml of acetic anhydride. The reaction mixture was heated at 50C for 24 hours. The reaction solution was poured into 10 ml of the cold saturated aqueous solution of sodium hydrogen carbonate, and the resulting product was extracted with chloroform (3 x 10 ml).
The extract was dried with anhydrous sodium sulfate, and ~, 2 ~ ~ ~d g ~ the solvent was distilled off under reduced pressure. The residue was dissolved in 5 ml of methanol, and heated under reflux for 45 hours. The solvent was distilled off under reduced pressure, and the residue was purified by silica gel column chromatography to obtain 156 mg of 11-0-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 50) as white powder.
Example_46 300 mg of the compound 8 and 0.3 ml of propionic anhydride were reacted according to the method of Example 45, and the protection was removed with methanol. The crude product was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g, eluting solvent : chloroform-methanol (30 ~ o obtain 152 mg of ll-0-propionyl-8,9-- anhydroerythromycin A 6,9-hemiketal (compound 51) as white powder.
Rf value : 0.21 (CHC13 : CH30H) = lO l).
Example 47 300 mg of the compound 8 and 0.3 ml of butyric anhydride were reacted and after removal of the protection according to the process of Example 45, a crude product was obtained. This product was purified by silica gel column chromatography ~Merck Art 7734 silica gel 20 g, eluting solvent : chloroform-methanol (30 : l) to obtain 146 mg of 1~ 1 3 ~ 2 8 ~ ~
ll-O-butyryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 52) as white powder.
Rf value : 0.21 (CHC13 : CH30H = 10 : 1) Example 48 300 mg of the compound 8 and 0.3 ml of benzoyl chloride were reacted and after removal of the protection according to the process of Example 45, a crude product was obtained~ This product was purified by silica gel column chromatography (Merck Art 7734 silica gel 20 g, eluting solvent : chloroform-methanol (30 : 1)) to obtain 155 mg of ll-O-benzoyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 53) as white powder.
Rf value : 0.20 (CHC13 : CH30H = 10 : 1) Example 49 200 mg of erythromycin A was dissolved in 2 ml of CHC13, then added with 78 1 of 2-methoxypropene and 64 mg of pyridinium chloride and let to stand at room temperature.
After 1 day, the reaction solution was diluted with 20 ml of CHC13, and washed with 20 ml of the saturated a~ueous solution of sodium hydrogen carbonate and 20 ml of water. The CHC13 layer was dried with anhydrous sodium sulfated and concentrated under a reduced pressure to obtain a colorless glass-like sub~tance. The obtained glass-like substance was purified by silica gel column chromatography, utilizing a 1~ ~31 2862 D
developing solvent system of CHC13 : CH30H : conc. NH40H = 30 : 1 : 0.01, to obtain 194 mg (94.0~ of 11,12-0-isopropylidene-8,9-anhydroerythromycin A 6, 9-hemiketal (compound 54) as colorless powder.
Rf value : 0.14 (C~C13 : CH30H : conc. NH40H = 10 : 1 :
0.01), high mass : 755.4856 (calcd. for C40H6gN012 :
755.4815).
The structure, specific rotatory power and NMR
spectrum of the compounds obtained in Examples 38 - 49 are summarized in Tables 6 and 7.
~4 - ~ 3 ~ 2 ., . .~
CH3 CH~ CH3 CsH ~ ~ CH3 H3 ~ ~ OCH3 CHa ~l CH3 ~ CHa _ CH3 T a b 1 e 6 CompGund za I~ . Rl R2 R~ R~~ a ~p (cl.O,CHCl3) CH3CO CH3CO CH3CO H - 30.6 46 CH3CO CH3CO CHaCO CH3SCH2 - 31.6 47 H H H GH3SCHz - 28.6 48 CH3CO CHO CH3CO H 25.6 49 H CHO CH3CO H - 18.6 H H CH3CO H - 18.0 51 H . H CH3CHzCO H ~ 19.2 52 H H CH3CHzCHzCO H - 20.4 53 H H PhCO H - 38.0 54 H H ~C = - 24.8 - - : CH3 In the Table 6 , Ph is phenyl.
The numbers of compounds correspond to those in E~amples.
., , 3 ~ 2 D I ~ 0 .. o , _, U~
~ U~
c o a)~,, .. 0 , O1'1 r~ Q - ~ _ ~ o ~ o O OC`~
a: -- N U~ _ _ _ _ .~ _ _ ~
. ! ~ -- C.:) Q c~
O O `
a O c~- - c c ~ D
C c~ N
~> ~ .. ~ C
a) ,~ Q
_ U~ U~
Ql ~ ~ ~ mN
a) l .
11~ ---- - - ._ ...... , _ ~1 ~n a ~ o !~ N r~
Ql _ ~ ~o ~ ~l .
0 ~
c~ _ _ _ _ _ _ _. _ _ h ,... . _ .. _ ... __ __ .. _ .. _ O L'~ ) Q O _ C~ ~7 .. , E~ o ~ "~
... ' ! . . _ _ i 13~2~
", . ~ _ Example_50 100 mg of the compound 27 was dissolved in 1 ml of chloroform and stirred for 2 hours with addition of 40 1 of methyl iodide. After most of the solvent was distilled off, 5 ml of ether was added and the precipitate formed was filtered.
The precipitate was washed with ether and dried to obtain 65 mg (yield 54%) of 8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 55) in white powder.
Example 51 By using 30 mg of the compound 32 and 15 1 of methyl iodide, the same processing as in Example 50 was conducted to obtain 18 mg (yield 51%) of 11,12-di-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 56) in white powder.
Example 52 By using 79 mg of 11-O-methanesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 57) and 29 1 of methyl iodide, the same processing as in Example 50 was conducted to obtain 55 mg (yield 58%) of ll-O-methanesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 58), in white powder.
~3~,g~7J
~g 3~Éxample 53 ., ` By using 78 mg of the compound 25 and 59 1 of methyl iodide, the same processing as in Example 50 was conducted to obtain 67 mg (yield 74%) of ll-O-methane-sulfonyl-4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 59) in pale yellow powder.
Example 54 200 mg of the compound 27 was dissolved in 4 1 of chloroform, then 0.5 ml of ethyl iodide was added thereto and the mixture was refluxed for 20 hours. After most of the solvent was distilled off under reduced pressure, 10 ml of ether was added and a precipitate formed was filtered. The precipitate was washed with ether and dried to obtain 145 mg (yield 60~) of 8,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 60) in white powder.
Example 55 200 mg of the compound 27 was dissolved in 4 ml of chloroform, then O.S ml of propyl iodide was added thereto and the mixture was refluxed for 48 hours. After the same processing as in Example 54, 120 mg (yield 48~) of 8,3-anhydroerythromycin A 6,9-hemike~al propyl iodide (compound 61) was obtained in white powder.
2 g ~ ~J
Example 56 200 mg of the compound (1~ and 0.2 ml of methyl iodide were employed to carry out the same processing as in Example 50. As the result, 154 mg (yield 65~) of 2'-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 62) was obtained in white powder.
The structural formulae of the compounds obtained in Examples 50 to 56 and their physical properties are shown in Table 8 and Table 9, respectively.
..
12~
r~
v R O~
R~0~1 CH3/> ~ CH3 CH3 \~\c~là ,pCH~
0 ~ CH3 o~ ORZ
T a b l e mpound No. Rl R2 R5 R5 R R X
59 H CH0CH3SOz H CH3 CH3 61 H H H H CH3 CHz CH2 CH3 I
.
g~ 13~2~
T~
L~
_ _ _ - G~
_~ _ ~ ~ rlr~
~ ^ - u~ 3 o Q) _ _ _ ~ _ O Iq o C~ ~ V
0 I I N N O C ) C~ C~ 0 ~
~ ~) cn o ~ _ c~ _ C~l ~ ~ '-- _ Y
O
~:L ~ _ ._ , . .__ _ . .. _,. ........ _. .
_~ _ c~ r 0 o~ O
tl~`_ ~r cr~ ~ IS:~ cr~
.~
_ .
.
~. _ G ,~ . ~, _ C~ ~ l ~ n C) ~;
~ 0 ~ 0 c~ 0 0 U~ ~
E-l ~:: _ ~ , _ ~
o _ o _I o O o ~ oC~ O O
~ o~ C ~
.~ ~I O I O I O I O I O I OI O
~.) tl5 Il)N Q --IN ~ --N Q --N ~ -- N ~ _ N ~1 --I N Q ~
~ O O _~ 11 ~ 11 r~ 11 r~ 11 ~ 11 r-~ 11 ~-- 11 cn L~ C~ ~ Vl j~ U l _ . . -O . L~ o --~ O L~
C~ _ .. ___ , ~3~28~
~, D ~
Example 57 100 my of the compound 27 was dissolved in 2 ml of dry ether and added with 73 1 of diisopropylethylamin~ and 33 1 of valeryl chloride at 0C. The mixture was warmed to room temperature, and stirred for 15 minutes at the ame treatment, followed by dilution with addition of 25 ml of ethyl acetate.
~his was washed with the saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution, followed by drying over anhydrous sodium sulfate. The crude produce obtained by evaporation of the solvent was purified by silica gel chromatography (developing solvent: chloroform-methanol-conc. aqueous ammonia (20 : 1 : 0.01)) to obtain 96 mg (yield 86%) of 2'-O-varelyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 63) in white powder.
Example 58 By using S0 mg of the compound 27, 37 1 of diisopropylethylamine and 20 1 of hexanoyl chloride, the same processing as in Example 57 was conducted to obtain 53 mg (yield 94%) of 2'-O-hexanoyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 64) in white powder.
Example 59 By using 100 mg of the compound 27, 73 1 of diisopropylethylamine and 93 mg of arachidonyl chloride, the same prvcessing as in Example 57 was conducted to obtain 104 ~ ~3~2~
., j ~ ~
mg (yield 73%) of 2'-O-arachidonyl-8,9-anhydroerythromycin A
6,9-hemiketal (compound 65) in white powder.
Example 60 By using 100 mg of the compound 27, 73 1 of diisopropylethylamine and 34 ml of isovaleryl chloride, the same processing as in Example 57 was conducted to obtain 100 mg (yield 89%) of 2'-O-isovaleryl-8,9-anhydroerythromycin A
6,9-hemiketal (compound 66) in white powder.
: Example 61 By using 100 mg of the compound 27, 73 1 of diisopropylethylamine and 27 1 of crotonyl chloride, the same processing as in Example 57 was conducted to obtain 87 mg (yield 79~) of 2'-O-chrotonyl-8,9-anhydroerythromycin A 6,9-: hemiketal (compound 67) in white powder.
Exam~le 62 By using 100 mg of the compound 27, 73 1 of diisopropylethylamine and 33 1 of benzoyl chloride, the same processing as in Example 57 was conducted to obtain 86 mg (yield 75~) of 2'-O-benzoyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 68) in white powder~
.
~- ~ 3 ~
~ ~3 ~ _ ~ _ Example 63 200 mg of the compound 27 was dissolved in 4 ml of chloroform and 150 1 of diisopropylethylamine was added thereto. After the mixture was heated to 50C, 32 1 of methanesulfonyl chloride was added thereto and the mixture was stirred for 25 minutes, followed further by addition of 20 of methanesulfonyl chloride. After stirring for 15 minutes, the mixture was cooled to room temperature and diluted with 30 ml of ethyl acetate. This was washed with saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution, and dried over anhydrous sodium sulfate.
The residue obtained by evaporation of the solvent was purified by silica gel chromatography (developing solvent:
chloroform-methanol-conc aqueous ammonia (60 : 1 : 0.01)) to 15obtain 53 mg of 2'-O-methanesulfonyl-8,9-anhydroerythromycin A
6,9-hemiketal (compound 69) (yield 24~ and 52 mg (yield 21~) of 11,2'-di-O-methanesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 70).
Example_64 100 mg of the compound 27 was dissolved in 1 ml of dry pyridine, added with 0.3 ml of diphenylchlorophosphate and the mixture was stirred overnight. The mixture was diluted with 20 ml of ethyl acetate and the solution washed with saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution, and was dired over anhydrous ~f 1312~J
- ~6 -sodium sulfate and the solvent was evaporated. The crude product obtained was purified by silica gel chroma'cography ~de~eloping solvent: chloroform-methanol-conc. aqueous ammonia (10 : 1 : 0.01)) to obtain 43 mg (yield 33%) of 2'-O-diphenylphosphoryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 71) in white powder.
Example 65 Using 100 mg of the compound 27, 1 ml of pyridine and 0.2 ml of diethylchlorophosphate, the same processing as in Example 64 was conducted to obtain 25 mg (yield 21%) of 2'-O-diethylphosphoryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 72) in white powder.
Example 66 157 mg of the compound (8) was dissolved in 1 ml of dry pyridine, added with 0.2 ml of valeric anhydride and the mixture was stirred at 50C for 2 weeks. After the mixture was cooled to room temperature, it was diluted with 30 ml of ethyl acetate and washed with saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution and dried over anhydrous sodium sulfate. The solvent was evaporated and the residue obtained was dissolved in 6 ml of methanol, followed by stirring at 50C for 3 hours. After cooling to room temperature and addition of 0.4 ml of 5%
aqueous sodium hydrogen carbonate solution, the mixture was 131 28~
~5 D ~
further stirred for 6 hours. After concentration to a volume of about 2 ml, the concentrate was diluted with 30 ml of e'hyl acetate and washed with saturated aqueous sodium chloride solution, followed by drying over anhydrous sodium sulfate.
The crude product obtained by evaporation of the solvent was purified by silica gel chromatography (developing solvent:
chloroform-methanol-conc. aqueous ammonia (10 : 1 : 0.13) to obtain 91 mg (yield 57~) of 11-0-valeryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 73) in white powder.
Example 67 By using 157 mg of the compound 8, 1 ml of dry pyridine and 0.2 ml of hexanoic acid anhydride, the same processing as in Example 66 was conducted to obtain 98 mg (yield 60%) of 11-O-hexanoyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 74) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 57-67 shown in Table 10.
--3 ~ 2 A~
:~ _` o ~ ~, CCi , ~-, ~,.,~
a, ~ Li ~, ~
V 0 ~2~
_i _ O o ~i :~: . ___ __ _ 0 ~ L~"
i O ~
i ~
ri L. t~ L^ ~ C~ O O O ~ ,i . 7 C O
o ~~; u e I _ _ _ _ ~3 r ~ L i L~L ~ L^i L~ L_i ~0 rO _ . . ._ I
~ i i . c~ ~ O ~ ~ ~ ~
~, I c c~ c r- e~ c~ O ~ o ~
~_ _ - - n n _ = _ ~ = __ _ _ = = N
: _~ _ _ .__._ ---_ O O ~ ~
~ ~ r, _ _ - __ __ _ o 1 3 e u~ ~ o o ~ e : ,~
~ 31%~
~1 I) Example 68 1.00 g of detN-methyl)erythromycin A (reference:
Japanese Laid-open Patent Application No. 9129/1972) was dissolved in 5 ml of glacial acetic acid and the solution was stirred for 1 hour. The reaction mixture was poured into 20 ml of ice-cooled conc. aqueous ammonia. The mixture was extracted 3 times with 10 ml of chloroform. The chloroform solution was dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel chromatography (developing solvent:
chloroform-methanol-conc. aqueous ammonia (10 : 1 : 0.1)) to obtain 830 mg (yield 85%) of de(N-methyl)-8,9-anhydroerythromycin A 6,9-hemiketal (compound 75) in white powder.
Example 69 930 mg of bis-(de(N-methyl)) erythromycin A
(reference: Japanese Laid-open Patent Application No.
9129/1972) was processed in the same manner as in Example 68 to obtain 770 mg (yield 85%) of bis-~de(N-methyl))-8,9-anhydroerythromycin A 6,9~hemiketal (compound 76) in white powder.
:
Example 70 400 mg of ethyl-nor-erythromycin A (reference: R.
K. Clark. Jr. et al. Antibiotics and Chemotherapy VII, 483, (1957)) was processed in the same manner as in Example 68 to .
.~
g~6 ~3~28~J
~ 3 -- 10 ~ --obtain 327 mg (yield 84%) of ethyl-nor-8,9-anhydroerythrom~cin A 6,9-hemiketal (compound 77) in white powder.
168 gm of butyl-nor-erythromycin A (reference: R.
K. Clark, Jr. et al. Antibiotics and Chemotherapy VII, 483, (1957)) was processed in the same manner as in Example 68 to obtain 99 mg (yield 60%) of butyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 78) in white powder.
Example 72 88 mg of the compound 77 was dissolved in 2 ml of chloroform, then 1 ml of ethyl iodide was added thereto and the mixture was stirred at 80C for 14 hours. After most of the solvent was evaporated under reduced pressure, 5 ml of ether was added and the precipitate formed was filtered. The precipitate was washed with ether and dried to obtain 72 mg (yield 67~) of ethyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 79) in white powder.
Example 73 376 mg of the compound 76 was dissolved in 5 ml of methanol. 138 mg of sodium hydrogen carbonate and 1.0 ml of 1,4-dibromobuthane were added, and the mixture was stirred at 50C for 8 hours. The reaction mixture was diluted with 30 ml of ethyl acetate, and washed with water and saturated aqueous g~ 13~2g~
sodium chloride solution. The ethyl acetate olution was dried over anhydrous sodium sulfate and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluant: chloroform-methanol-conc. aqueous ammonia (10 : 1 : 0.1)~ to obtain 158 mg (yield 39~) of de(dimethylamino)-3'-pyrrolidino-8,9-anhydroerythromycin A 6,9-hemiketal (compound 80) in white powder.
Example 74 By using 63 mg of the compound 80 and 0.1 ml of methyl iodide, the same processing as in Example 50 was conducted to obtain 70 mg (yield 93~) of de(dimethylamino)-3'-pyrrolidino-g,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 81) in white powder.
Example 75 120 mg of the compound 27 was dissolved in 1 ml of chloroform, then 0.5 ml of 2-bromoethanol and 0.5 ml of diisopropylethylamine were added thereto and the mixture was stirred for 2 days. After evaporation of the solvent, 5 ml of ether was added and the precipitate formed was filtered. The precipitate was washed with 10 ml of ether and dried to obtain 119 m~ (yield 84~) of 8,9-anhydroerythromycin A 6,9-hemiketal 2-hydxoxyethyl bromide (compound 82) in white powder.
~ 3 ~
qo Example 76 150 mg of the compound 27 was dissolved in 1 ml of chloroform, then 0.5 ml of allylbromide and 0.25 ml of diisopropylethylamine were added thereto and the mixture was stirred for 1 day. After evaporation of the solvent, 5 ml of ether was added and a precipitate formed was filtered. The precipitate was washed with 10 ml of ether and dried to obtain 134 mg (yield 76~) of 8,9-anhydroerythromycin A 6,9-hemiketal allyl bromide (compound 83) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 68 to 76 are shown in Table 11.
(followed by blank) -.
- qt ~3~2 D _ _ _ , ,, _ _ _ _ ~o ~ 0 U~ 0 0 0 C
~ o ~ o o o 0 ~ ' ' _' _~ Z ~ ' Z"
# V ~ o o~ ~ -~ _ _ Ei U~ ~ ~ C~ tD ~ tO ~ ~ r V _ .
~ . ~ ll Cr~
~-, o ~ ~
~o \ _~ ~ r~ 0 ~ ~ c~ ~
O '' O ~ Q~
~4c-~ co .
0 l '' ~;~ :~ _ ~~ O O o O
O O ~
O I C~ ~O C~ O ~ ~ ~ CO C~
.a h O~ ^ Co ~ ~ . 1~ ~ O ^ r~ ^ CD ^ 10 ^
~ c) c~ o ~ro ~ o ~ o c~ O ~0 c~o c~o c~ o ~ :~ I ~ I . I ~ I ~ I . I . I . I . I .
O C N l~ I N C~ I N ~ I N Q I N Q I r~ Q I N C~ I N ~ I 111 ~ l _ ~
0 ~3 = 3 N
: ~ N ~ -- U
C4 V -- V V -- ~--) N ~ ~ ~_~ N _ ~ N
az ~ az a2-_ ~:
o ~ u~ o ~
I~ 0 oo 0 0 ' .
. ". , ~ -, . . .
, 3~2~%
~, j , Example 77 100 mg of 9-dihydroerythromycin A 6,9-epoxide (compound 84) (reference~ Japanese Laid-open Patent Publication No. 1588/1972) was dissolved in 1 ml of chloroform, then 0.6 ml of methyl iodide was added thereto and the mixture was heated under reflux for 1.5 hours. After evaporation of the solvent, 5 ml of ether was added and the precipitate formed was filtered~ The precipitate was washed with 10 ml o ether and dried to obtain 85 mg (yield 71~) 9-dihydroerythromycin A 6,9~epoxide methyl iodide (compound 85) in white powder.
Example_78 100 mg o the compound 84 was dissolved in 1 ml of chloroform, then 0.6 ml of ethyl iodide was added thereto and the mixture was heated under reflux for 2 days. After evaporation of the solvent, 5 ml of ether was added and the precipitate formed was filtered. The precipitate was washed with 10 ml of ether and dried to obtain 90 mg (yield 74%) of 9-dihydroerythromycin A 6,9-epoxide ethyl iodide (compound 86) in white powder.
100 mg of the compound 84 was dissolved in 1 ml of chloroform, then 0.7 ml of propyl iodide was added thereto, and the mixture was heated under reflux for 2 days. After evaporation of the solvent, 5 ml of ether was added and - 131?.~
q3 I~ ' ~
the precipitate formed was filtered. The precipitate was washed with 10 ml of ether and dried to obtain 87 mg (yield 70%) of 9-dihydroerythromycin A 6,9-epoxide propyl iodide (compound 87) in white powder.
Example 80 100 mg of the compound 84 was dissolved in 1 ml chloroforml then 1.0 ml of butyl iodide was added thereto, and the mixture was heated under reflux for 1 day. After evaporation of the solvent, 5 ml of ether was added and the precipitate formed was filtered~ The precipitate was washed with 10 ml of ether and dried to obtain 95 mg (yield 76~) of 9-dihydroerythromycin A 6,9-epoxide butyl iodide (compound 88) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compound obtained in Examples 77 to 80 are shown in Table 12.
12~
a ~ ~ C" C~ C" C~
a~ ~" c~ c~ c~ c~
Co ~ O) tO tD tD
H w :~ rN r~ N N N
o ~ u~ ~ æ
O ,,~ ~ C~
O~ l o o .
W
t?4 ~ N --~' N
...~
o . u~
O ~ 0 eo O ~; ..___ ~3~2g~
D 9 ~ _ Exam~le 81 200 mg of the compound 27 was dissolved in 4 ml of chloroform, then 0.3 ml of benzyl chloride was added thereto and the mixture was heated under reflux for 48 hours.
Subsequently, the same processing as in Example 54 was conducted to obtain 122 mg (yield 52%) of 8,9~anhydro-erythromycin A 6,9-hemiketal benzyl chloride (compound 89) in white powder.
Example 82 200 mg of the compound 57 was dissolved in 4 ml of chloroform, then 0.5 ml of ethyl iodide was added thereto and the mixture was heated under reflux for 20 hours.
Subsequently, the same processing as in Example 54 was conducted to obtain 134 mg (yield 56%) of 11-O-mesyl-8,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 30) in pale yellow powder.
Example 83 200 mg of the compound 57 was dissolved in 4 ml of chloroform, then 0.5 ml of propyl iodide was added thereto and the mixture was heated under reflux for 20 hours.
Subsequently, the same processing as in Example 54 was conducted to obtain 126 mg (yield 52~) of 11-O-mesyl-8r9-anhydroerythromycin A 6,9-hemiketal propyl iodide (compound 91) in pale yellow powder.
}~
3~2~
.j . .;~ ~
s.,~
Exam~le 84 200 mg of the compound 27 was dissolved in 4 ml of chloroform, then 0.5 ml of ethyl bromide was added thereto and the mixture was heated under reflux for 48 hours.
Subsequently, the same processing as in Example 54 was conducted to obtain 189 mg (yield 82%) of 8,9-anhydro-erythromycin A 6,9-hemiketal ethyl bromide (compound 92) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 81-84 are shown in Table 13.
(followed by blank space) q7 ~3~286~
_ ^,~=
o C C. ~ ~"
o _ ~
~ c~ ~ o ~ o ~
o L~l ~, .
PC
_ ~
e = ~ ~ =
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E~ O Cl:~ 0 a~ Q
q~ 1312 ~3 ~
Example 85 206 mg of the compound 76 was dissolved in 3 ml of methanol, then 76 mg of sodium hydrogen carbonate and 0~5 ml of ethyl iodide were added thereto, and the mixture was stirred at 50C overnight This reaction mixture was diluted with 30 ml of ethyl acetate, and washed with a saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution. The ethyl acetate solution was dried over anhydrous sodium sulfate and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (developing solvent: chloroform-methanol-conc. aqueous ammonia (50 : 1 : 0.1)) to obtain 98 mg (yield 44~) of diethyl-dinor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 93) and 47 mg (yield 22%) of ethyl-dinor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 94).
Example 86 By using 550 mg of the compound 76, 1.6 ml of 1.5-dibromopentane and 202 mg of sodium hydrogen carbonate, the same processing as in Example 73 was conducted to obtain 327 mg (yield 54%) of de~dimethylamino)-3'-piperidyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 95) in white powder.
Example 87 By using 78 mg of the compound 93 and 1 ml of ethyl iodide, the same processing as in Example 72 was conducted to .
13i28~J
D ~
obtain lS mg (yield 16~) of diethyl-dinor-8,g-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 96) in pale yellow powder.
Example 88 By using 93 mg of the compound 80 and 1 ml of ethyl iodide, the same processing as in Example 72 was conducted to obtain 94 mg (yield 84~) of de(dime~hylamino)-3'-pyrrolidino-8,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 97) in pale yellow powder.
Example 89 83 mg of the compound 95 and 0.5 ml of methyl iodide were dissolved in 0.5 ml of chloroform, and stirred at 40C
for 9 hours. Thereafter, the same processing as in Example 50 was conducted to obtain 84 mg (yield 35%) of de(dimethylamino)~3'-piperidino-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 98) in pale yellow powder.
Example 90 By using 94 mg of the compound 95 and 1 ml of ethyl iodide, the same processing as in Example 72 was conducted to obtain 33 mg (yield 29%) of de(dimethylamino)-3'-piperidino-8,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide lcompound 99) in pale yellow powder.
, ~
l ~o 'l ,~
By using 50 mg of the compound 27 and 0.6 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 52 mg (yield 89%) of 8,9-anhydro-erythromycin A 6,9-hemiketal propargyl bromide (compound 100) in white powder.
Example 92 By using 111 mg of the compound 32 and 0.12 ml of propargyl bromide, the same processing as in Example ;O was conducted to obtain 111 mg (yield 87%) of 11,12-di-0-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 101) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 85-92 are shown in Table 14.
8 ~ ~
D _ _ ~ ~;
_ _ ~
g A V, V, V, V, _ r~ I~o n C~ ~ V ~ '~ O
~.1 _ _ _ O O A_ O O ~ 0 00 ~
O V ~ V V C-~ __ - -- W- I
E r~
::) _ E VJA tD ID Ll~ C` LC) ~ ~) .7 U O C~
~ V l C~
o~ ~ ID t~ ~ 0 ~/ \4 0 Ll~
'~
Ll n n n ~J rV--~ 2~Vl ~ V ~ n o n ~ n o n ~ n = c~ = oO = C~ =O = O = U~ = O = O =
I O I O I O I O I O I O I O I O I O
ILI N ~ N D~ N ~----1 N D _ N D ~ N L~ -- N Cl _ N 1 ~-- N 1~--u ~ ol ~ ol ~ ol ~ ol ~ ol ;~_ ~ o ~ ~
u~L
~ _ N r~ ~.0 n _ 1 U. ~ I N 1~ I 1~ n I rl I
N ~ ~ N ~ I ~ Nn_ N
~ ~ V ~ J a ~e C~ C~ \e / \a I
_ . _ -~
~' ~0 0 ~ ~ C, ~ 0 O
~ 3 ~
~o~
`~
Example 93 120 mg of ll-O-methylerythromycin A (reference:
Japanese Laid-open Patent Publication No. 192294/1982) was dissolved in 6 ml of glacial acetic acid and the solution was stirred for one and a half hour~7 The reaction mixture was poured into 15 ml of ice-cooled conc. aqueous ammonia. This mixture was extracted 3 times with 10 ml of chloroform. This chloroform solution was dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel chromatography (developing solvent: chloroform-methanol-conc. aqueous ammonia (20 : 1 :
0.01)) to obtain 95 mg (yield 75~) of 11-O-methyl-8,9-anhydro-erythromycin A 6,9-hemiketal (compound 102) in white powder.
Examp e 94 125 mg of ll-O-ethylerythromycin A (reference:
Japanese Laid-open Patent Publication No~ 192294/1982) was treated in the same manner as in Example 93 to obtain 102 mg (yield 84%) of 11-O-ethyl-8,g-anhydroerythromycin A 6,9-hemiketal (compound 103) in white powder.
Example 95 120 mg of the compound 48 was dissolved in 3.2 ml of chloroform, then added with 2 mg of 4-dimethylaminopyridine, 0.86 ml of triethylamine and 0.86 ml of propionic anhydride, and heated under reflux for 3 days. The reaction mixture was cooled to room temperature, and the same process as that for obtaining the compound 28 was conducted to obtain a pale ID3 ~ 3 ~
D yellow glass-like substance. This substance was dissolved, without purification, in 6 ml of methanol, and heated under reflux for 3 days. The solution was cooled to room temperature and concentrated under reduced pressure to obtain a pale yellow glass-like substance. This substance was purified by silica gel column chromatography, utilizing a developing solvent system of chloroform -methanol -conc.
aqueous ammonia - 50 : 1 : 0.01, to obtain 65 mg (yield 55~) of ll-O-propionyl-12-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 104~ in white powder.
Rf value : 0.16 (chloroform : methanol : conc. aqueous ammonia - 10 : 1 : 0.01~, low mass : M+ 813, high mass :
813.486 (calcd. for C42H71N14 : 813-487)-Example 96 120 mg of the compound 48 was dissolved in 3.2 ml of chloroform, then added with 2 mg of 4-dimethylaminopyridine, 0.86 ml of triethylamine and 0.86 ml of butyric anhydride/ and processed in the same manner as in the preparation of the compound 104 to obtain 75 mg (yield 63~) of 11-O-butyryl-12-O-acetyl-8,9-anhyroerythromycin A 6,9-hemiketal (compsund 105) in white powder.
Rf value : 0.16 (chloroform -methanol -conc. aqueous ammonia = 10 : 1 : 0.01), low mass : M+ 827, high mass :
827.502 (calcd. for C43H73Nol~ : 827.502).
1 312~
v Example 97 100 mg of the compound 32 was dissolved in 1 ml of chloroform and heated under reflux for 2 days with addition of 0.5 ml of ethyl bromide. Thereafter, the same processing as in Example 50 was conducted to obtain 98 mg (yield 86%) of 11,12-di-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal ethyl bromide (compound 106) in white powder.
Example 98 150 mg of the compound 27 was dissolved in 1 ml of chloroform, then 1 ml of methyl bromoacetate and O.S ml of diisopropylethylamine were added thereto and the mixture was stirred for 6 hours~ After evaporation of the solvent, 5 ml of ether was added and the precipitate formed was filtered.
The precipitate was washed with 10 ml of ether and dried to obtain 145 mg (yield 80%) of 8,9-anhydro-erythromycin A 6,9-hemiketal methoxycarbonyl methyl bromide (compound 107) in white powder.
Example 99 150 mg of the compound 27 was dissolved in 1 ml of chloroform, then 200 mg of bromoacetic acid and 0.5 ml of diisopropylethylamine were added thereto and the mixture was heated under reflux for 6 hours. After evaporation of the solvent, 5 ml of ether was added and the precipirate formed was filtered. The precipitate was washed with 10 ml of ether and dried to obtain 127 mg ~yield 71%) of 8,9-anydro-~ 3 ~
~o5 D ffl_ erythromycin A 6,9-hemiketal carboxymethyl bromide (compound 108) in white powder.
Exam~le 100 150 mg of the compound 27 was dissolved in 1 ml of chloroform, then 0.5 ml of monofluoroethyl bromide was added thereto and the mixture was heated under reflux for 5 days.
Subsequently, the same processing as in Example 75 was conducted to obtain 135 mg (yield 76%) of 8,9-anhydroerythromycin A 6,9-hemiketal 2-fluoroethyl bromide ~compound 109) in white powder.
Exam~ 101 150 mg of the compound 27 was dissolved in 1 ml of chloroform, then 0.5 ml of bromoacetonitrile was added thereto and the mixture was allowed to stand at room temperature for 5 hours. Subsequently, the same processing as in Example 75 was conducted to obtain 165 mg (yield 94%) of 8,9-anhydroerythromycin A 6,9-hemiketal cyanomethyl bromide (compound 110) in white powder.
The structural formulae, specific rotatory powers and NMR specturm values of the compounds obtained in Examples 93-101 are shown in Table 15.
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Example 102 By using 200 mg of 9-dihydroerythromycin A 6,9-epoxide (compound 84) (reference: Japanese Laid-open Patent Publication No. 1588/1972) and 0.5 ml of allyl bromide, the same processing as in Example 50 was conducted to obtain 190 mg of 9-dihydroerythromycin A 6,9-epoxide allyl bromide (compound 111) in white powder.
Example_103 By using 200 mg of 9 dihydroerythromycin A 6~9-epoxide (compound 84) and 0.5 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain l9S
mg (yield 84%) of 9-dihydroerythromycin A 6,9-epoxide propargyl bromide (compound 112) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 102 and 103 are shown in Table 16.
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Example 104 505 mg of the compound 75 was dispersed in 5 ml of methanol, then 121 mg of sodium hydrogen carbonate and 68.5 ~1 of allyl bromide were added thereto, and the mixture thereof was stirred at 50C for 2 hours. This reaction mixture was diluted with 35 ml of ethyl acetate, and the solution was washed with a satura~ed aqueous sodium hydrogen carbonate and a saturated aqueous sodium chloride solution. The ethyl acetate solution was dried over anhydrous sodium sulfate and 10 the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluant chloroform-methanol-conc. aqueous ammonia (10 : 1 :
0.1)) to obtain 72 mg ~yield 67%) of allyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 113) in white 15 powder.
Example 105 By using 105 mg of the compound 75, 25 mg of sodium hydrogen carbonate and 14.7 ~1 of propargyl bromide, the same 20 processing as in Example 104 was conducted to obtain 66 mg (yield 60~) of propargyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 114) in white powder.
:
Example 106 105 mg of the compound 75 was dispersed in 1 ml of methanol, then 0.29 ml of diisopropylethylamine and 0.29 ml of 1-iodopropane were added thereto, and the mixture thereof was ,~
" ~ ~ 3~2~
,` .. ,) ~
stirred at 50C for 22 hours. This reaction mixture was diluted with 20 ml of ethyl acetate, and the solution was washed with a saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution The ethyl acetate solution was dried over anhydrous sodium sulfate and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluant chloroform-methanol-conc. aqueous ammonia (50 : 1 : 0.1)) to obtain 84 mg (yield 75%) of propyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal Icompound 115) in white powder.
Example 107 By using 105 mg of the compound 75, 0.26 ml of diisopropylethylamine and 0.21 ml of bromoethanol, the same processing as in Example 106 was conducted to obtain 94 mg (yield 84%) of 2-hydroxyethyl-nor-8,9-anhydroerythromycin A
6,9-hemiketal (compound 116) in white powder.
Example 108 By using 351 mg of the compound 75, 0.87 ml of diisopropylethylamine and 2 ml of 2-iodopropane, the same processing as in Example 106 was conducted to obtain 101 mg (yield 27~) of de isopropyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 117) in white powder.
3~ 28~
Example 109 By using 351 mg of the compound 75, 0.87 ml of diisopropylethylamine and 2.2 ml of isobutyl bromide, the same processing as in Example 106 was conducted to obtain 52 mg (yield 14%) of isobutyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 118) in white powder.
Example ]10 1.0 g of the compound 76 was dissolved in 10 ml of methanol. To this, 2.5 ml of diisopropylethylamine and 1.3 ml of allyl bromide were added, and the mixture was stirred at 50C for 40 minutes. The solvent was removed under reduced pressure, and the residue was purified by silica gel column chromatography (eluant chloroform-methanol-conc. aqueous ammonia (50 : 1 : 0.01)) to obtain 337 mg (yield 30%) of diallyl-dinor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 119) in white powder and 256 mg (yield 24%) of allyl-dinor-8,9-anhydroerythromycin A 6,9 hemiketal (compound 120) in white powder.
500 mg of the compound 76 was dissolved in 5 ml of methanol. To this were added 0.64 ml of diisopropylethy-lamine and 0.33 ml of propargyl bromide, and the mixture was stirred at 50C for 1 hour. The solvent was removed under reduced pressure, and the residue was purified by silica gelcolumn chromatography (eluant chloroform-methanol-conc.
12 ~ ~ ~
- ~2-~ -aqueous ammonia ~100 : 1 : 0.01)) to obtain 114 mg (yield 21%) of dipropargyl-dinor-8,9-anhydroerythromycin A 6,9-hemiketal ~compound 121) in white powder and 252 mg (yield 45%) of propargyl-dlnor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 122) in white powder.
Example 112 By using 256 mg of the compound 120, 0.61 ml of diisopropylethylamine and 0.31 ml of propargyl bromide, the same processing as in Example 106 was conducted to obtain 207 mg (yield 77%) of N-allyl-N-propargyl-dinor-8,9-anhydroerythromycin A 6,9-hemike~al (compound 123) in white powder.
Example 113 By using 100 mg of the compound 113 and 0.1 ml of allyl bromider the same processing as in Example 50 was conducted to obtain 110 mg (yield 94%) of allyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal allyl bromide (compound 124) in white powder.
Example 114 By using 100 mg of the compound 113 and 0.1 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 102 mg (yield 85~) of allyl-nor-8,9-anhydroerythromycin A 6,9-hemi~etal propargyl bromide (compound 125) in white powder.
~2~
`D
Example 115 By using 61 mg of the compound 114 and 0.1 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 51 mg (yield 72~) of propargyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 126) in white powder.
Example 116 By using 99 mg of the compound 119 and 0.1 ml of allyl bromide, the same processing as in Example 50 was conducted to obtain 16 mg (yield 14%) of diallyl-dinor-8,9-anhydroerythromycin A 6,5-hemiketal allyl bromide (compound 127) in white powder.
Example 117 61 mg of the compound 119 was dissolved 1 ml of methanol, then 12 mg of sodium hydrogen carbonate and 81.9 ~1 of propargyl bromide were added thereto, and the mixture was stirred at room temperature for 3 days. The same processing as in Example 50 was hereinafter conducted to obtain 32 mg (yield 39~) of diallyl-dinor-8,9-anhydroerythromycin A 6,9-hemi~etal propargyl bromide (compound 128) in white powder.
Example 118 By using 101 mg of the compound 122, 24 mg of sodium hydrogen carbonate and Ool ml of propargyl bromide, the same ~ ~3~ 2 ~ ~4 processing as in Example 117 was conducted to obtain 38 mg (yield 30%) of dipropargyl-dinor-8,9-anhydroerythromycin A
6,9-hemiketal propargyl bromide (compound 129) in white powder.
Example 119 By using 50 mg of the compound 117 and 0.1 ml of iodomethane, the same processing as in Example 50 was conducted to obtain 52 mg (yield 86%) of 8,9-anhydroerythromycin A 6,9-hemiketal isopropyl iodide (compound 130) in white powder.
Example 120 By using 29 mg of the compound 118 and 0.4 ml of iodomethane, the same processing as in Example 50 was conducted to obtain 30 mg (yield 86%) of 8,9-anhydroerythromycin A 6,9-hemiketal isobutyl iodide (compound 131) in white powder.
Example 121 150 mg of the compound 27 was dissolved in 3 ml of chloroform, then 1 ml of butyl iodide was added thereto and the mixture was heated under reflux for 3 days. The same processing as in Example 50 was hereinafter conducted to obtain 121 mg (yield 64%) of 8,9-anhydroerythromycin A 6,9-hemiketal butyl iodide (compound 132) in white powder.
~ 3 ~ J
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Example 122 1~0 mg of the ccmpound 27 was dissolved in 2 ml of chloroform, then 0.3 ml of cyclopropylmethyl bromide was added thereto and the mixture was heated under reflux for 2 days.
The same processing as in Example 50 was hereinaf~cer conducted to obtain 145 mg (yield 81%) of 8,9-anhydroerythromycin A 6,9-hemiketal cyclopropylmethyl bromide (compound 133) in white powder.
Example 123 150 mg of the compound 27 was dissolved in 2 ml of chloroform, then 0.5 ml of crotyl bromide was added thereto and the mixture was allowed to stand at room temperature for 6 hours. The same processing as in Example 50 was hereinafter conducted to obtain 175 mg (yield 98%) of 8,9-anhydroerythromycin A 6,9-hemiketal crotyl bromide (compound 134) in white powder.
Example 124 150 mg of the compound 27 was dissolved in 1.5 ml of chloroform, then 0.5 ml of 2,3-dibromopropene was added thereto and the mixture was allowed to stand at room temperature for 1 day. The same processing as in Example 50 was hereinafter conducted to obtain 111 mg (yield 58%) of 8,9-anhydroerythromycin A 6,9-hemiketal 2-bromo allyl bromide (compound 135~ in white powder.
~28~
Example 125 150 mg of the compound 27 was dissolved in 3 ml of chloroform, then 0.5 ml of propargyl chloride was added thereto and the mixture thereof was heated under reflux for 1 day. The same processing as in Example 50 was conducted to obtain 156 mg (yield 94~) of 3,9-anhydroerythromycin A 6,9-hemiketal propargyl chloride (compound 136) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 104 - 125 are shown in Table 17.
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Example 126 73.5 mg of the compound 32 was dissolved in 0.8 ml of methanol, and 0.2 ml of water was added thereto, followed by addition of 66.4 mg of CH3COONa 3H20. The reaction mixture was heated at 50C, and stirred after 26 mg of iodine was added thereto. In order to maintain the pH of the reaction mixture at 8 to 9, 0.4 ml portions of lN aqueous sodium hydroxide solution were added thereto after 10 minutes, 30 minutes and 1 hour, respectively, and the stirring was further continued for l hour. The solution was thereafter poured into 100 ml of dilute aqueous ammonia and the resultant product was extracted with chloroform. The extract was washed with dilute aqueous ammonia and dried with anhydrous sodium sulfate.
Thereafter, the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (eluant: chloroform-methanol-conc. aqueous ammonia (15 : l : 0.1)) to obtain 51 mg tyield 70%~ of 11,12-di-O-acetyl-de-N-methyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 137) in white powder.
Example 127 By using 79 mg of the compound 137, 0.17 ml of diisopropylethylamine and 0 16 ml of iodomethane, the same processing as in Example 106 was conducted to obtain 30 mg (yield 37%) of 11,12-di-O-acetyl-N-ethyl-nor-8,9-anhydroerythromycin A 6,9r~hemiketal (compound 138) in white powder.
2~
D
Example 128 By using 500 mg of the compound 20, 468 mg of CH3COONa 3H2O and 170 mg of iodine, the same processing as in Example 126 was conducted to obtain 413 mg (yield 84%) of de-N-methyl-8,9-anhydroerythromycin A 6,9-hemiketal cyclic 11,12-carbonate (compound 139) in white powder.
Example 129 By using 350 mg of the compound 139, 0.84 ml of diisopropylethylamine and 0.77 ml o iodoethane, the same processing as in Example 106 was conducted to obtain 254 mg (yield 69%) of N-ethyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal cyclic 11,12-carbonate (compound 140) in white powder.
Example 130 By using 24.8 mg of 8,9-anhydroerythromycin B 6,9-hemiketal (reference: P. Kurath, et al., Experientia, 27, 362, 1971) and 0.2 ml of bromoethane, the same processing as in Example 97 was conducted to obtain 20 mg (yield 69%) of 8,9 anhydroerythromycin B 6,9-hemiketal ethyl bromide (compound 141) in white powder.
Example 131 By using 24.7 mg of 8,9-anhydroerythromycin B 6,9-hemiketal and 0.05 ml of propargyl bromide, the same processing as in Example 5Q was conducted to obtain 24 mg .~ .
~ 28~
l~3 _ ~ _ " ~
(yield 83%) of 8,9-anhydroerythromycin B 6,9-hemiketal propargyl bromide (compound 142) in white powder.
Example 132 By using 50 mg of the compound 54 and 0.3 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 54 mg (yield 93%) of 11,12-O-isopropylidene-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 143) in white powder.
Exam~le 133 By using 50 mg of the compound 39 and 0.3 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 55 mg (yield 96%) of 8,9-anhydroerythromycin A 6,9-hemiketal 11~12-phenylboronate propargyl bromide (compound 144) in white powder.
Example 134 By using 100 mg of the compound 20 and 0.3 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 108 mg (yield 93%) of 8,9-anhydroerythromycin A 6,9-hemiketal 11,12-cyclic carbonate propargyl bromide (compound 145) in white powder.
Example 135 By using 100 mg of the compound 37 and 0.3 ml of propargyl bromide, the same processing as in Example 50 was ~3~28 D ~
conducted to obtain 107 mg (yield 93~) of 8,9-anhydroerythromycin A 6,9-hemiketal 11,12-sulfite propargyl bromide (compound 146) in white po~der.
Example 136 100 mg of the compound 8 was dissolved in 2 ml of dry dimethyl sulfoxide, and ~o this, were added with 1 ml of acetic anhydride and 0.3 ml of acetic acid. The reaction mixture was allowed to stand for 1 day at room temperature.
Thereafter, the same processing as in Example 39 was conducted to obtain 65 mg (yield 56%) of 2'-O-acetyl-4"-O-~ormyl-11,12-di-O-methylthiomethyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 147) in white powder.
Example 137 150 m~ of the compound 147 was dissolved in 6 ml of methanol, and to this, was added with 1 ml of conc. aqueous ammonia. The reaction mixture was heated, for 2 days under reflux. Thereafter, the same processing as in Example 40 was conducted to obtain 105 mg (yield 76%) of 11,12-di-O-methylthiomethyl-8,~-anhydroerythromycin A 6,9-hemiketal (compound 148) in white powder.
Example 138 By using 100 mg of the compound 148 and 0.2 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 98 mg (yield 86%) of 11,12-di-O-13~2~
~5 - 13~ -methylthiomethyl-8,9-anhydroerythromycin A 6,g-hemiketal propargyl bromide (compound 149) in white powder.
Example 139 99 mg of the compound 1 was dissolved in 3 ml of chloroform, then 0~5 ml of propargyl bromide was added thereto and the mixture was allowed to stand at room temperature for 3 hours. The same processing as in Example 50 was hereinaft~r conducted to obtain 76 mg (yield 66~) of 2'-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 150) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 126 - 139 are shown in Table 18.
~1 28~
l~
R3 ~f ~; CH3 H3 C~ ~H3 CHa ~1/ CH3 ~a Table 18 (a) CH3 _ . . ~ .
No. Rl R2 R3 R4 X [~]D (_ 1.0) _ _ _ _ . __ __ 137 H H OAc OAc N -17.0 (CHC13) . ~CH3 138 H H OAc OAcN~C2H5 -11.8 (CHC13) _ ~ ~. .. _.:. .. ,_ .. _.. _____ 139 H H _O~C=O N~CH3 _30.0 (CHC13) .
140 H H ~C=O ~C~3 _ -30.8 ~CHC13) 141 H H OH H N-CH3 Br -18.8 (CH30H) 142 H H OH H N~CH3 Br -23.6 (CH30H) . CH2C-CH
_ _ .
143 H H CN-~H3 Br -23.2 (CH30H) O ' CH CH2C-'CH
__ ____ _ _ 144 H H ~ B-P~ N~CH3 Br _55,4 (CH30H) . __ _ _ .
145 H H ~~ C=O~ ~CH3 ~ -2g.6 (CH30H) _ ' -O CH2C-CH
.
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No. Rl R2 R3 R4 X [a]D (c 1.0~
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146 H H ~ S=O N-CH3 ~r -31.4C tCH30H) _ .__ _ . ...... ... . _.. _ ....
147 Ac CHO OCH2SCH3OCH2scH3 N(CH3)2 -37.2 (CHC13) . ~ . . . __ 148 H H OCH2scH3OCH2SCH3 N(CH3)2 -34.6 (CHC13) _ ~ ~CH3 ~
149 H H OCH2scH30CH2SCH3 N-CH3 Br -32.2 (CH30H) . ,. ._ . _ _ _ _ ~ ,CH3 150 Ac H OH OH N-CH3 B} -41.2 (CH30H) _ CH2C~CH . .. _ _ D ~ 3~28~
Table 18 (b) . ~ .__ NMR spectrum ~ value ppm Compound ~ ___ No. 8-Me (s, 3H) 3"-OMe (s, 3H) Others (solvent) ~ _ 1.99 (OAc, s, 3H), 2.03 (OAc, s, 3H) 137 1.59 3.34 2.42 (3'-NMe, s, 3H) (CDC13) 1.99 (OAc, s, 3H), 2.03 (OAc, s, 3H) 138 1.60 3.34 2.23 (3'-NMe , s, 3H) (CDC13) _ _ _ . __, , _ 139 1.62 3.35 2.42 (3'-NMe, s, 3H) (CDC13) _ _ 140 1.61 3.35 2.23 (3'-NMe , s, 3H) (CDC13) . _ ~_ _ 141 1.58 3.38 3.14 (3'-NMe2, s, 6H) (CD30D) .. __ _ . . .___ ._ __ 142 1.58 3.39 3.25 (3'~NMe2, s, 6H) (CD30D) ~ ~ CH3 1.3B (~ C~ , s, 6H) (CD30D) 143 1.62 3.39 CH3 3.27 (3'-NMe2, s, 6H) . . _ . _ 3.28 (3'-NMe2, s, 6H) 144 1.62 3.39 (CD30D) 7.3 - 7.8 (Ph, m~ 5H) .
145 1.61 3.53 3.37 (3'-NMe2, s, 6H~ (CDC13) _ . .__ 146 1.57 3.39 3.39 (3'-NMe2, s, 6H) (CD30D) .... . __ 2.04 (2'-OAc, s, 3H), 147 1.58 3.36 2.27 (3'-NMe2, s, 6H), (CDC13) 8.19 (4"-CHO, s, lH) 2.22 (11-SCH3, s, 30 , 148 1.58 3.35 2.24 (12-SCH3, s, 3H), (CDC13) _ _ ~ 2.29 (3'-NMe2, s, 6H) o - ~- 131~8~
.......
Table 18 (b) . ._ .
Compound ~ NMR spect r~m ~ value ppm ~o. 8-Me (s, 3H) 3"~0Me (s, 3H) Others (solvent) ... . _ .__--2.22 (SCH3, s, 6H), 149 1.58 3.39 (CD30D) .. 3.25 (3'-NMe2, 5, 6H) _ ._ .__ 2.20 (2'-OAs, s, 3H), 150 1.56 3.38 (CD30D) _._ 3.32 (3'-NMe2, S, 6H) _ .. __ I3~ ~ 31~8~
~.
Example 140 150 mg of the compound 84 was dissolved in 3 ml of chloroform, then 0.5 ml of propargyl chloride was added thereto and the mixture thereof was heated under reflux for 1 day. Thereafter, the same processing as in Example 50 was conducted to obtain 142 mg (yield 86%) of 9-dihydroerythromycin A 6,9-epoxide propargyl chloride (compound 151) in white powder.
Example_141 By using 143 mg of the compound 84, 27 ~1 of acetic anhydride and 31 ~1 of pyridine, the same processing as in Example 23 was conducted to obtain 125 mg (yield 83%) of 2'-O-acetyl-9-dihydroerythromycin A 6,9-epoxide (compound 152) in white powder.
Example 142 150 mg of the compound 84 was dissolved in 3 ml of chloroform, then 0.5 ml of benzyl chloride was added thereto and the mixture was heated under reflux for 38 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 155 mg (yield 81%) of 9-dihydroerythromycin A 6,9-epoxide benzyl chloride (compound 153) in white powder.
a 131 131 28~7 D Ex~mple 143 150 mg of the compound 84 was dissolved in 3 ml of chloroform, then 0.5 ml of 1-bromo-2-fluoroethane was added thereto, and the mixture was heated under reflux for 7 days.
Thereafter, the same processing as in Example 50 was conducted to obtain 66 mg (yield 37%) of 9-dihydroerythromycin A 6,9-epoxide 2-fluoroethyl bromide (compound 154) in pale yellow powder.
Example 144 150 mg of the compound 84 was dissclved in 3 ml of chloroform, then O.S ml of cyclopropylmethyl bromide was added thereto and the mixture was heated under reflux for 38 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 153 mg (yield 86%) of 9-dihydroerythromycin A 6,9-epoxide cyclopropylmethyl bromide (compound 155) in white powder.
Exam~le 145 150 mg of the compound 84 was dissolved in 3 ml of chloroform, then 0.5 ml of 3-butenyl bromide was added thereto, and the mixture was heated under reflux for 38 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 113 mg (yield 63~) of 9-dihydroerythromycin A 6,9-epoxide 3-butenyl bromide (compound 155) in white powder.
I3 ~3~o-~
Example 146 125 mg of the compound 152 was dissolved in 3 ml of chloroform, then 0.5 ml of propargyl bromide was added thereto and the mixture thereof was allowed to stand at room temperature for 3 hours. Thereafter, the same processing as in Example 50 was conducted to obtain 114 mg (yield 79%) of 2'-O-acetyl-9-dihydroerythromycin A 6,9-epoxide propargyl bromide (compound 157) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 140 - 146 are shown in Table 19.
, . . .
133 ~3~2~
-- ,3~--_ ~t~ r~ ~:) X ~ ~ ~
a\~, z \1/ \
.~. .
_ 13~
~ ~ s~
l3~
D - ~
Example 147 By using 64 mg of 6-O-methylerythromycin A
(reference: S. Morimoto et al., J. Antibiotics, 37, 187, 1984) and 0.1 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 73 mg (yield 98~) of 6-O-methylerythromycin A propargyl bromide (compound 158) in white powder.
Example 148 200 mg of erythromycin A was dissolved in 3 ml of chloroform, then 0.3 ml of ethyl iodide was added thereto and the mixture was heated under reflux for 20 hours. Thereafter, the same processing as in Example 54 was conducted to obtain 150 mg (yield 62~) of erythromycin A ethyl iodide (compound 159) in pale yellow powder.
Example 149 100 mg of erythromycin A was dissolved in 2 ml of chloroform, then 0.2 ml of allyl bromide was added thereto, and the mixture was stirred at room temperature for 5 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 97 mg (yield 83%) of erythromycin A allyl bromide (compound 160) in white powder.
Exa~
200 mg of erythromycin A was dissolved in 3 ml of chloroform, then 0.2 ml of propargyl bromide wa~ added thereto ,~
13(~ 2 8 ~ ~
and the mixture was stirred at room temperature fsr 3 hours.
Thereafter, the same processing as in Example 54 was conducted to obtain 202 mg (yield 87~) of erythromycin A propargyl bromide (compound 161) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 147 - 150 are shown in Table 20.
l31 13128 r) ~T' ~ ~ ro r~ ~ r~
'_' :, ~
== ` ~
X, = H IS~ m ~: ~1 ~ :~ ~
;: ~7' ~ ~ ::: ~ ~:
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l3~ 2g ~J
- 1~1 --.~
Example 151 50 mg of the compound 9 was dissolved in 1 ml of chloroform, then 0.2 ml of methyl iodide was added thereto and the mixture was stirred at room temperature for 3 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 49 mg (yield 83~) of 4"-O-formyl-8,9-anhydroerythromycin ~ 6,9-hemiketal methyl iodide (compound 162) in pale yellow powder.
Example 152 50 mg of the compound 9 was dissolved in 2 ml of chloroform, then 0.5 ml of ethyl iodide was added thereto and the mixture was heated under reflux for 20 hours.
Subsequently, the same processing as in Example 50 was conducted to obtain 38 mg (yield 13~) of 4"-O-formyl-8,9-anhydroerythromycin A 6,g-hemiketal ethyl iodide (compound 163) in pale yellow powder.
Example 153 50 mg of the compound 9 was dissolved in 2 ml of chloroform, then 0.5 ml of propyl iodide was added thereto and the mixture was heated under reflux for 48 hours.
Subsequently, the same processing as in Example 50 was conducted to obtain 34 mg (yield 56%) of 4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal propyl iodide (compound 164) in pale yellow powder.
~3~2~
l~q D - ~
Example 154 50 mg of the compound 9 was dissolved in 1 ml of chloroform, then 0.2 ml of propargyl bromide was added thereto and the mixture was stirred at room temperature for 3 hours.
Subsequently, the same processing as in Example 50 was conducted to obtain 51 mg (yield 87%) of 4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 165) in white powder.
Examp~e 155 50 mg of the compound 9 was dissolved in 1 ml of choloroform, then 0.2 ml of allyl bromide was added thereto and the mixture was stirred at room temperature for 5 hours.
Subsequently, the same processing as in Example 50 was conducted to obtain 47 mg ~yield 80%) of 4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal allyl bromide (compound 166) in white powder.
Example_156 50 mg of the compound 50 was processed in the same manner as in Example 151 to obtain 50 mg (yield 84%) of ll-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 167) in pale yellow powder.
Example 157 50 mg of the compound 50 was processed in the same manner as in Example 152 to obtain 39 mg (yield 65%) of ll-O-t - ~ -acetyl-8,9-anhydroerythromycin A 5,9-hemiketal ethyl iodide (compound 168) in pale yellow powder.
Exam~le 158 50 mg of the compound 50 was processed in the same manner as in Example 153 to obtain 33 mg (yield 54~) of ll-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal propyl iodide (compound 169) in pale yellow powder.
Example 159 50 mg of the compound 50 was processed in the same manner as in Example 154 to obtain 49 mg (yield 84%) of ll-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 170) in white powder.
Example 160 50 mg of the compound 50 was processed in the same manner as in Example 155 to obtain 46 mg (yield 79%) o ll-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal allyl bromide (compound 171) in white powder.
Examele 161 50 mg of the compound 25 was dissolved in 1 ml of chloroform, then 0.2 ml of propargyl bromide was added thereto and the mixture was stirred at room temperature for 3 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 44 mg (yield 77~) of 4"-O-formyl-ll-O-~ 3~28~, -- ~3, --mesyl-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 172) in white powder.
Example 162 50 mg of the compound 57 was dissolved in 2 ml of chloroform, then 0.3 ml of ethyl iodide was added thereto and the mixture thereof was heated under reflux for 20 hours.
Subsequently, the same processing as in Example 50 was conducted to obtain 39 mg (yield 66%) of 11-O-mesyl-3,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 173) in pale yellow powderO
Ex~mple 163 50 mg of the compound 57 was dissolved in 2 ml of chloroform, then 0.3 ml of propyl iodide was added thereto and ; the mixture was heated under reflux for 48 hours.
Subsequently, the same processing as in Example 54 was conducted to obtain 34 mg (yield 56%) of 11-O-mesyl-8,9-anhydroerythromycin A 6,9-hemiketal propyl iodide ~compound 174) in pale yellow powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 151 - 163 are shown in Table 21.
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,~
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u~ tn u~ u~ 0~ O u~ ~n o CJ O ~, ~, L)U~ . U~ U~
~ ~, o o - ~ ~, o o o ~ ~, ~ ~, _1 _1 _I ~ _I _( .~ ~ ~ O r~ N _l N _l O_~ ~1 -- N -- N -- N -- ~ ~ 1 -- r') -- ~ --C~ ~ __ _ E u~
c) _~ ~ ~ ~ o~ ,_ ~ r- r~
~ r~ r~ ~ ~ ~ ~ ~ ~
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~_) o o ~r ~ er al ~ ~
~ N O 1~ ~ t`~ Q ~D I~
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t.) C~ O C.) ~ U~ U~ U~
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As hereinbefore described, the compound (1) of the present invention has an excellent effect of stimulating the gastrointestinal contractive motion, and the preparation containing this compound can be advantageously used as a digestive ~ract contractive motion stimulant.
r~
v R O~
R~0~1 CH3/> ~ CH3 CH3 \~\c~là ,pCH~
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T a b l e mpound No. Rl R2 R5 R5 R R X
59 H CH0CH3SOz H CH3 CH3 61 H H H H CH3 CHz CH2 CH3 I
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Example 57 100 my of the compound 27 was dissolved in 2 ml of dry ether and added with 73 1 of diisopropylethylamin~ and 33 1 of valeryl chloride at 0C. The mixture was warmed to room temperature, and stirred for 15 minutes at the ame treatment, followed by dilution with addition of 25 ml of ethyl acetate.
~his was washed with the saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution, followed by drying over anhydrous sodium sulfate. The crude produce obtained by evaporation of the solvent was purified by silica gel chromatography (developing solvent: chloroform-methanol-conc. aqueous ammonia (20 : 1 : 0.01)) to obtain 96 mg (yield 86%) of 2'-O-varelyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 63) in white powder.
Example 58 By using S0 mg of the compound 27, 37 1 of diisopropylethylamine and 20 1 of hexanoyl chloride, the same processing as in Example 57 was conducted to obtain 53 mg (yield 94%) of 2'-O-hexanoyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 64) in white powder.
Example 59 By using 100 mg of the compound 27, 73 1 of diisopropylethylamine and 93 mg of arachidonyl chloride, the same prvcessing as in Example 57 was conducted to obtain 104 ~ ~3~2~
., j ~ ~
mg (yield 73%) of 2'-O-arachidonyl-8,9-anhydroerythromycin A
6,9-hemiketal (compound 65) in white powder.
Example 60 By using 100 mg of the compound 27, 73 1 of diisopropylethylamine and 34 ml of isovaleryl chloride, the same processing as in Example 57 was conducted to obtain 100 mg (yield 89%) of 2'-O-isovaleryl-8,9-anhydroerythromycin A
6,9-hemiketal (compound 66) in white powder.
: Example 61 By using 100 mg of the compound 27, 73 1 of diisopropylethylamine and 27 1 of crotonyl chloride, the same processing as in Example 57 was conducted to obtain 87 mg (yield 79~) of 2'-O-chrotonyl-8,9-anhydroerythromycin A 6,9-: hemiketal (compound 67) in white powder.
Exam~le 62 By using 100 mg of the compound 27, 73 1 of diisopropylethylamine and 33 1 of benzoyl chloride, the same processing as in Example 57 was conducted to obtain 86 mg (yield 75~) of 2'-O-benzoyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 68) in white powder~
.
~- ~ 3 ~
~ ~3 ~ _ ~ _ Example 63 200 mg of the compound 27 was dissolved in 4 ml of chloroform and 150 1 of diisopropylethylamine was added thereto. After the mixture was heated to 50C, 32 1 of methanesulfonyl chloride was added thereto and the mixture was stirred for 25 minutes, followed further by addition of 20 of methanesulfonyl chloride. After stirring for 15 minutes, the mixture was cooled to room temperature and diluted with 30 ml of ethyl acetate. This was washed with saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution, and dried over anhydrous sodium sulfate.
The residue obtained by evaporation of the solvent was purified by silica gel chromatography (developing solvent:
chloroform-methanol-conc aqueous ammonia (60 : 1 : 0.01)) to 15obtain 53 mg of 2'-O-methanesulfonyl-8,9-anhydroerythromycin A
6,9-hemiketal (compound 69) (yield 24~ and 52 mg (yield 21~) of 11,2'-di-O-methanesulfonyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 70).
Example_64 100 mg of the compound 27 was dissolved in 1 ml of dry pyridine, added with 0.3 ml of diphenylchlorophosphate and the mixture was stirred overnight. The mixture was diluted with 20 ml of ethyl acetate and the solution washed with saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution, and was dired over anhydrous ~f 1312~J
- ~6 -sodium sulfate and the solvent was evaporated. The crude product obtained was purified by silica gel chroma'cography ~de~eloping solvent: chloroform-methanol-conc. aqueous ammonia (10 : 1 : 0.01)) to obtain 43 mg (yield 33%) of 2'-O-diphenylphosphoryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 71) in white powder.
Example 65 Using 100 mg of the compound 27, 1 ml of pyridine and 0.2 ml of diethylchlorophosphate, the same processing as in Example 64 was conducted to obtain 25 mg (yield 21%) of 2'-O-diethylphosphoryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 72) in white powder.
Example 66 157 mg of the compound (8) was dissolved in 1 ml of dry pyridine, added with 0.2 ml of valeric anhydride and the mixture was stirred at 50C for 2 weeks. After the mixture was cooled to room temperature, it was diluted with 30 ml of ethyl acetate and washed with saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution and dried over anhydrous sodium sulfate. The solvent was evaporated and the residue obtained was dissolved in 6 ml of methanol, followed by stirring at 50C for 3 hours. After cooling to room temperature and addition of 0.4 ml of 5%
aqueous sodium hydrogen carbonate solution, the mixture was 131 28~
~5 D ~
further stirred for 6 hours. After concentration to a volume of about 2 ml, the concentrate was diluted with 30 ml of e'hyl acetate and washed with saturated aqueous sodium chloride solution, followed by drying over anhydrous sodium sulfate.
The crude product obtained by evaporation of the solvent was purified by silica gel chromatography (developing solvent:
chloroform-methanol-conc. aqueous ammonia (10 : 1 : 0.13) to obtain 91 mg (yield 57~) of 11-0-valeryl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 73) in white powder.
Example 67 By using 157 mg of the compound 8, 1 ml of dry pyridine and 0.2 ml of hexanoic acid anhydride, the same processing as in Example 66 was conducted to obtain 98 mg (yield 60%) of 11-O-hexanoyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 74) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 57-67 shown in Table 10.
--3 ~ 2 A~
:~ _` o ~ ~, CCi , ~-, ~,.,~
a, ~ Li ~, ~
V 0 ~2~
_i _ O o ~i :~: . ___ __ _ 0 ~ L~"
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i ~
ri L. t~ L^ ~ C~ O O O ~ ,i . 7 C O
o ~~; u e I _ _ _ _ ~3 r ~ L i L~L ~ L^i L~ L_i ~0 rO _ . . ._ I
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~1 I) Example 68 1.00 g of detN-methyl)erythromycin A (reference:
Japanese Laid-open Patent Application No. 9129/1972) was dissolved in 5 ml of glacial acetic acid and the solution was stirred for 1 hour. The reaction mixture was poured into 20 ml of ice-cooled conc. aqueous ammonia. The mixture was extracted 3 times with 10 ml of chloroform. The chloroform solution was dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel chromatography (developing solvent:
chloroform-methanol-conc. aqueous ammonia (10 : 1 : 0.1)) to obtain 830 mg (yield 85%) of de(N-methyl)-8,9-anhydroerythromycin A 6,9-hemiketal (compound 75) in white powder.
Example 69 930 mg of bis-(de(N-methyl)) erythromycin A
(reference: Japanese Laid-open Patent Application No.
9129/1972) was processed in the same manner as in Example 68 to obtain 770 mg (yield 85%) of bis-~de(N-methyl))-8,9-anhydroerythromycin A 6,9~hemiketal (compound 76) in white powder.
:
Example 70 400 mg of ethyl-nor-erythromycin A (reference: R.
K. Clark. Jr. et al. Antibiotics and Chemotherapy VII, 483, (1957)) was processed in the same manner as in Example 68 to .
.~
g~6 ~3~28~J
~ 3 -- 10 ~ --obtain 327 mg (yield 84%) of ethyl-nor-8,9-anhydroerythrom~cin A 6,9-hemiketal (compound 77) in white powder.
168 gm of butyl-nor-erythromycin A (reference: R.
K. Clark, Jr. et al. Antibiotics and Chemotherapy VII, 483, (1957)) was processed in the same manner as in Example 68 to obtain 99 mg (yield 60%) of butyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 78) in white powder.
Example 72 88 mg of the compound 77 was dissolved in 2 ml of chloroform, then 1 ml of ethyl iodide was added thereto and the mixture was stirred at 80C for 14 hours. After most of the solvent was evaporated under reduced pressure, 5 ml of ether was added and the precipitate formed was filtered. The precipitate was washed with ether and dried to obtain 72 mg (yield 67~) of ethyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 79) in white powder.
Example 73 376 mg of the compound 76 was dissolved in 5 ml of methanol. 138 mg of sodium hydrogen carbonate and 1.0 ml of 1,4-dibromobuthane were added, and the mixture was stirred at 50C for 8 hours. The reaction mixture was diluted with 30 ml of ethyl acetate, and washed with water and saturated aqueous g~ 13~2g~
sodium chloride solution. The ethyl acetate olution was dried over anhydrous sodium sulfate and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluant: chloroform-methanol-conc. aqueous ammonia (10 : 1 : 0.1)~ to obtain 158 mg (yield 39~) of de(dimethylamino)-3'-pyrrolidino-8,9-anhydroerythromycin A 6,9-hemiketal (compound 80) in white powder.
Example 74 By using 63 mg of the compound 80 and 0.1 ml of methyl iodide, the same processing as in Example 50 was conducted to obtain 70 mg (yield 93~) of de(dimethylamino)-3'-pyrrolidino-g,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 81) in white powder.
Example 75 120 mg of the compound 27 was dissolved in 1 ml of chloroform, then 0.5 ml of 2-bromoethanol and 0.5 ml of diisopropylethylamine were added thereto and the mixture was stirred for 2 days. After evaporation of the solvent, 5 ml of ether was added and the precipitate formed was filtered. The precipitate was washed with 10 ml of ether and dried to obtain 119 m~ (yield 84~) of 8,9-anhydroerythromycin A 6,9-hemiketal 2-hydxoxyethyl bromide (compound 82) in white powder.
~ 3 ~
qo Example 76 150 mg of the compound 27 was dissolved in 1 ml of chloroform, then 0.5 ml of allylbromide and 0.25 ml of diisopropylethylamine were added thereto and the mixture was stirred for 1 day. After evaporation of the solvent, 5 ml of ether was added and a precipitate formed was filtered. The precipitate was washed with 10 ml of ether and dried to obtain 134 mg (yield 76~) of 8,9-anhydroerythromycin A 6,9-hemiketal allyl bromide (compound 83) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 68 to 76 are shown in Table 11.
(followed by blank) -.
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~, j , Example 77 100 mg of 9-dihydroerythromycin A 6,9-epoxide (compound 84) (reference~ Japanese Laid-open Patent Publication No. 1588/1972) was dissolved in 1 ml of chloroform, then 0.6 ml of methyl iodide was added thereto and the mixture was heated under reflux for 1.5 hours. After evaporation of the solvent, 5 ml of ether was added and the precipitate formed was filtered~ The precipitate was washed with 10 ml o ether and dried to obtain 85 mg (yield 71~) 9-dihydroerythromycin A 6,9~epoxide methyl iodide (compound 85) in white powder.
Example_78 100 mg o the compound 84 was dissolved in 1 ml of chloroform, then 0.6 ml of ethyl iodide was added thereto and the mixture was heated under reflux for 2 days. After evaporation of the solvent, 5 ml of ether was added and the precipitate formed was filtered. The precipitate was washed with 10 ml of ether and dried to obtain 90 mg (yield 74%) of 9-dihydroerythromycin A 6,9-epoxide ethyl iodide (compound 86) in white powder.
100 mg of the compound 84 was dissolved in 1 ml of chloroform, then 0.7 ml of propyl iodide was added thereto, and the mixture was heated under reflux for 2 days. After evaporation of the solvent, 5 ml of ether was added and - 131?.~
q3 I~ ' ~
the precipitate formed was filtered. The precipitate was washed with 10 ml of ether and dried to obtain 87 mg (yield 70%) of 9-dihydroerythromycin A 6,9-epoxide propyl iodide (compound 87) in white powder.
Example 80 100 mg of the compound 84 was dissolved in 1 ml chloroforml then 1.0 ml of butyl iodide was added thereto, and the mixture was heated under reflux for 1 day. After evaporation of the solvent, 5 ml of ether was added and the precipitate formed was filtered~ The precipitate was washed with 10 ml of ether and dried to obtain 95 mg (yield 76~) of 9-dihydroerythromycin A 6,9-epoxide butyl iodide (compound 88) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compound obtained in Examples 77 to 80 are shown in Table 12.
12~
a ~ ~ C" C~ C" C~
a~ ~" c~ c~ c~ c~
Co ~ O) tO tD tD
H w :~ rN r~ N N N
o ~ u~ ~ æ
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O~ l o o .
W
t?4 ~ N --~' N
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D 9 ~ _ Exam~le 81 200 mg of the compound 27 was dissolved in 4 ml of chloroform, then 0.3 ml of benzyl chloride was added thereto and the mixture was heated under reflux for 48 hours.
Subsequently, the same processing as in Example 54 was conducted to obtain 122 mg (yield 52%) of 8,9~anhydro-erythromycin A 6,9-hemiketal benzyl chloride (compound 89) in white powder.
Example 82 200 mg of the compound 57 was dissolved in 4 ml of chloroform, then 0.5 ml of ethyl iodide was added thereto and the mixture was heated under reflux for 20 hours.
Subsequently, the same processing as in Example 54 was conducted to obtain 134 mg (yield 56%) of 11-O-mesyl-8,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 30) in pale yellow powder.
Example 83 200 mg of the compound 57 was dissolved in 4 ml of chloroform, then 0.5 ml of propyl iodide was added thereto and the mixture was heated under reflux for 20 hours.
Subsequently, the same processing as in Example 54 was conducted to obtain 126 mg (yield 52~) of 11-O-mesyl-8r9-anhydroerythromycin A 6,9-hemiketal propyl iodide (compound 91) in pale yellow powder.
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3~2~
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s.,~
Exam~le 84 200 mg of the compound 27 was dissolved in 4 ml of chloroform, then 0.5 ml of ethyl bromide was added thereto and the mixture was heated under reflux for 48 hours.
Subsequently, the same processing as in Example 54 was conducted to obtain 189 mg (yield 82%) of 8,9-anhydro-erythromycin A 6,9-hemiketal ethyl bromide (compound 92) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 81-84 are shown in Table 13.
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Example 85 206 mg of the compound 76 was dissolved in 3 ml of methanol, then 76 mg of sodium hydrogen carbonate and 0~5 ml of ethyl iodide were added thereto, and the mixture was stirred at 50C overnight This reaction mixture was diluted with 30 ml of ethyl acetate, and washed with a saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution. The ethyl acetate solution was dried over anhydrous sodium sulfate and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (developing solvent: chloroform-methanol-conc. aqueous ammonia (50 : 1 : 0.1)) to obtain 98 mg (yield 44~) of diethyl-dinor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 93) and 47 mg (yield 22%) of ethyl-dinor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 94).
Example 86 By using 550 mg of the compound 76, 1.6 ml of 1.5-dibromopentane and 202 mg of sodium hydrogen carbonate, the same processing as in Example 73 was conducted to obtain 327 mg (yield 54%) of de~dimethylamino)-3'-piperidyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 95) in white powder.
Example 87 By using 78 mg of the compound 93 and 1 ml of ethyl iodide, the same processing as in Example 72 was conducted to .
13i28~J
D ~
obtain lS mg (yield 16~) of diethyl-dinor-8,g-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 96) in pale yellow powder.
Example 88 By using 93 mg of the compound 80 and 1 ml of ethyl iodide, the same processing as in Example 72 was conducted to obtain 94 mg (yield 84~) of de(dime~hylamino)-3'-pyrrolidino-8,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 97) in pale yellow powder.
Example 89 83 mg of the compound 95 and 0.5 ml of methyl iodide were dissolved in 0.5 ml of chloroform, and stirred at 40C
for 9 hours. Thereafter, the same processing as in Example 50 was conducted to obtain 84 mg (yield 35%) of de(dimethylamino)~3'-piperidino-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 98) in pale yellow powder.
Example 90 By using 94 mg of the compound 95 and 1 ml of ethyl iodide, the same processing as in Example 72 was conducted to obtain 33 mg (yield 29%) of de(dimethylamino)-3'-piperidino-8,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide lcompound 99) in pale yellow powder.
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By using 50 mg of the compound 27 and 0.6 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 52 mg (yield 89%) of 8,9-anhydro-erythromycin A 6,9-hemiketal propargyl bromide (compound 100) in white powder.
Example 92 By using 111 mg of the compound 32 and 0.12 ml of propargyl bromide, the same processing as in Example ;O was conducted to obtain 111 mg (yield 87%) of 11,12-di-0-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 101) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 85-92 are shown in Table 14.
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Example 93 120 mg of ll-O-methylerythromycin A (reference:
Japanese Laid-open Patent Publication No. 192294/1982) was dissolved in 6 ml of glacial acetic acid and the solution was stirred for one and a half hour~7 The reaction mixture was poured into 15 ml of ice-cooled conc. aqueous ammonia. This mixture was extracted 3 times with 10 ml of chloroform. This chloroform solution was dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel chromatography (developing solvent: chloroform-methanol-conc. aqueous ammonia (20 : 1 :
0.01)) to obtain 95 mg (yield 75~) of 11-O-methyl-8,9-anhydro-erythromycin A 6,9-hemiketal (compound 102) in white powder.
Examp e 94 125 mg of ll-O-ethylerythromycin A (reference:
Japanese Laid-open Patent Publication No~ 192294/1982) was treated in the same manner as in Example 93 to obtain 102 mg (yield 84%) of 11-O-ethyl-8,g-anhydroerythromycin A 6,9-hemiketal (compound 103) in white powder.
Example 95 120 mg of the compound 48 was dissolved in 3.2 ml of chloroform, then added with 2 mg of 4-dimethylaminopyridine, 0.86 ml of triethylamine and 0.86 ml of propionic anhydride, and heated under reflux for 3 days. The reaction mixture was cooled to room temperature, and the same process as that for obtaining the compound 28 was conducted to obtain a pale ID3 ~ 3 ~
D yellow glass-like substance. This substance was dissolved, without purification, in 6 ml of methanol, and heated under reflux for 3 days. The solution was cooled to room temperature and concentrated under reduced pressure to obtain a pale yellow glass-like substance. This substance was purified by silica gel column chromatography, utilizing a developing solvent system of chloroform -methanol -conc.
aqueous ammonia - 50 : 1 : 0.01, to obtain 65 mg (yield 55~) of ll-O-propionyl-12-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 104~ in white powder.
Rf value : 0.16 (chloroform : methanol : conc. aqueous ammonia - 10 : 1 : 0.01~, low mass : M+ 813, high mass :
813.486 (calcd. for C42H71N14 : 813-487)-Example 96 120 mg of the compound 48 was dissolved in 3.2 ml of chloroform, then added with 2 mg of 4-dimethylaminopyridine, 0.86 ml of triethylamine and 0.86 ml of butyric anhydride/ and processed in the same manner as in the preparation of the compound 104 to obtain 75 mg (yield 63~) of 11-O-butyryl-12-O-acetyl-8,9-anhyroerythromycin A 6,9-hemiketal (compsund 105) in white powder.
Rf value : 0.16 (chloroform -methanol -conc. aqueous ammonia = 10 : 1 : 0.01), low mass : M+ 827, high mass :
827.502 (calcd. for C43H73Nol~ : 827.502).
1 312~
v Example 97 100 mg of the compound 32 was dissolved in 1 ml of chloroform and heated under reflux for 2 days with addition of 0.5 ml of ethyl bromide. Thereafter, the same processing as in Example 50 was conducted to obtain 98 mg (yield 86%) of 11,12-di-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal ethyl bromide (compound 106) in white powder.
Example 98 150 mg of the compound 27 was dissolved in 1 ml of chloroform, then 1 ml of methyl bromoacetate and O.S ml of diisopropylethylamine were added thereto and the mixture was stirred for 6 hours~ After evaporation of the solvent, 5 ml of ether was added and the precipitate formed was filtered.
The precipitate was washed with 10 ml of ether and dried to obtain 145 mg (yield 80%) of 8,9-anhydro-erythromycin A 6,9-hemiketal methoxycarbonyl methyl bromide (compound 107) in white powder.
Example 99 150 mg of the compound 27 was dissolved in 1 ml of chloroform, then 200 mg of bromoacetic acid and 0.5 ml of diisopropylethylamine were added thereto and the mixture was heated under reflux for 6 hours. After evaporation of the solvent, 5 ml of ether was added and the precipirate formed was filtered. The precipitate was washed with 10 ml of ether and dried to obtain 127 mg ~yield 71%) of 8,9-anydro-~ 3 ~
~o5 D ffl_ erythromycin A 6,9-hemiketal carboxymethyl bromide (compound 108) in white powder.
Exam~le 100 150 mg of the compound 27 was dissolved in 1 ml of chloroform, then 0.5 ml of monofluoroethyl bromide was added thereto and the mixture was heated under reflux for 5 days.
Subsequently, the same processing as in Example 75 was conducted to obtain 135 mg (yield 76%) of 8,9-anhydroerythromycin A 6,9-hemiketal 2-fluoroethyl bromide ~compound 109) in white powder.
Exam~ 101 150 mg of the compound 27 was dissolved in 1 ml of chloroform, then 0.5 ml of bromoacetonitrile was added thereto and the mixture was allowed to stand at room temperature for 5 hours. Subsequently, the same processing as in Example 75 was conducted to obtain 165 mg (yield 94%) of 8,9-anhydroerythromycin A 6,9-hemiketal cyanomethyl bromide (compound 110) in white powder.
The structural formulae, specific rotatory powers and NMR specturm values of the compounds obtained in Examples 93-101 are shown in Table 15.
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Example 102 By using 200 mg of 9-dihydroerythromycin A 6,9-epoxide (compound 84) (reference: Japanese Laid-open Patent Publication No. 1588/1972) and 0.5 ml of allyl bromide, the same processing as in Example 50 was conducted to obtain 190 mg of 9-dihydroerythromycin A 6,9-epoxide allyl bromide (compound 111) in white powder.
Example_103 By using 200 mg of 9 dihydroerythromycin A 6~9-epoxide (compound 84) and 0.5 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain l9S
mg (yield 84%) of 9-dihydroerythromycin A 6,9-epoxide propargyl bromide (compound 112) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 102 and 103 are shown in Table 16.
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Example 104 505 mg of the compound 75 was dispersed in 5 ml of methanol, then 121 mg of sodium hydrogen carbonate and 68.5 ~1 of allyl bromide were added thereto, and the mixture thereof was stirred at 50C for 2 hours. This reaction mixture was diluted with 35 ml of ethyl acetate, and the solution was washed with a satura~ed aqueous sodium hydrogen carbonate and a saturated aqueous sodium chloride solution. The ethyl acetate solution was dried over anhydrous sodium sulfate and 10 the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluant chloroform-methanol-conc. aqueous ammonia (10 : 1 :
0.1)) to obtain 72 mg ~yield 67%) of allyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 113) in white 15 powder.
Example 105 By using 105 mg of the compound 75, 25 mg of sodium hydrogen carbonate and 14.7 ~1 of propargyl bromide, the same 20 processing as in Example 104 was conducted to obtain 66 mg (yield 60~) of propargyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 114) in white powder.
:
Example 106 105 mg of the compound 75 was dispersed in 1 ml of methanol, then 0.29 ml of diisopropylethylamine and 0.29 ml of 1-iodopropane were added thereto, and the mixture thereof was ,~
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stirred at 50C for 22 hours. This reaction mixture was diluted with 20 ml of ethyl acetate, and the solution was washed with a saturated aqueous sodium hydrogen carbonate and saturated aqueous sodium chloride solution The ethyl acetate solution was dried over anhydrous sodium sulfate and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluant chloroform-methanol-conc. aqueous ammonia (50 : 1 : 0.1)) to obtain 84 mg (yield 75%) of propyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal Icompound 115) in white powder.
Example 107 By using 105 mg of the compound 75, 0.26 ml of diisopropylethylamine and 0.21 ml of bromoethanol, the same processing as in Example 106 was conducted to obtain 94 mg (yield 84%) of 2-hydroxyethyl-nor-8,9-anhydroerythromycin A
6,9-hemiketal (compound 116) in white powder.
Example 108 By using 351 mg of the compound 75, 0.87 ml of diisopropylethylamine and 2 ml of 2-iodopropane, the same processing as in Example 106 was conducted to obtain 101 mg (yield 27~) of de isopropyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 117) in white powder.
3~ 28~
Example 109 By using 351 mg of the compound 75, 0.87 ml of diisopropylethylamine and 2.2 ml of isobutyl bromide, the same processing as in Example 106 was conducted to obtain 52 mg (yield 14%) of isobutyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 118) in white powder.
Example ]10 1.0 g of the compound 76 was dissolved in 10 ml of methanol. To this, 2.5 ml of diisopropylethylamine and 1.3 ml of allyl bromide were added, and the mixture was stirred at 50C for 40 minutes. The solvent was removed under reduced pressure, and the residue was purified by silica gel column chromatography (eluant chloroform-methanol-conc. aqueous ammonia (50 : 1 : 0.01)) to obtain 337 mg (yield 30%) of diallyl-dinor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 119) in white powder and 256 mg (yield 24%) of allyl-dinor-8,9-anhydroerythromycin A 6,9 hemiketal (compound 120) in white powder.
500 mg of the compound 76 was dissolved in 5 ml of methanol. To this were added 0.64 ml of diisopropylethy-lamine and 0.33 ml of propargyl bromide, and the mixture was stirred at 50C for 1 hour. The solvent was removed under reduced pressure, and the residue was purified by silica gelcolumn chromatography (eluant chloroform-methanol-conc.
12 ~ ~ ~
- ~2-~ -aqueous ammonia ~100 : 1 : 0.01)) to obtain 114 mg (yield 21%) of dipropargyl-dinor-8,9-anhydroerythromycin A 6,9-hemiketal ~compound 121) in white powder and 252 mg (yield 45%) of propargyl-dlnor-8,9-anhydroerythromycin A 6,9-hemiketal (compound 122) in white powder.
Example 112 By using 256 mg of the compound 120, 0.61 ml of diisopropylethylamine and 0.31 ml of propargyl bromide, the same processing as in Example 106 was conducted to obtain 207 mg (yield 77%) of N-allyl-N-propargyl-dinor-8,9-anhydroerythromycin A 6,9-hemike~al (compound 123) in white powder.
Example 113 By using 100 mg of the compound 113 and 0.1 ml of allyl bromider the same processing as in Example 50 was conducted to obtain 110 mg (yield 94%) of allyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal allyl bromide (compound 124) in white powder.
Example 114 By using 100 mg of the compound 113 and 0.1 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 102 mg (yield 85~) of allyl-nor-8,9-anhydroerythromycin A 6,9-hemi~etal propargyl bromide (compound 125) in white powder.
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Example 115 By using 61 mg of the compound 114 and 0.1 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 51 mg (yield 72~) of propargyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 126) in white powder.
Example 116 By using 99 mg of the compound 119 and 0.1 ml of allyl bromide, the same processing as in Example 50 was conducted to obtain 16 mg (yield 14%) of diallyl-dinor-8,9-anhydroerythromycin A 6,5-hemiketal allyl bromide (compound 127) in white powder.
Example 117 61 mg of the compound 119 was dissolved 1 ml of methanol, then 12 mg of sodium hydrogen carbonate and 81.9 ~1 of propargyl bromide were added thereto, and the mixture was stirred at room temperature for 3 days. The same processing as in Example 50 was hereinafter conducted to obtain 32 mg (yield 39~) of diallyl-dinor-8,9-anhydroerythromycin A 6,9-hemi~etal propargyl bromide (compound 128) in white powder.
Example 118 By using 101 mg of the compound 122, 24 mg of sodium hydrogen carbonate and Ool ml of propargyl bromide, the same ~ ~3~ 2 ~ ~4 processing as in Example 117 was conducted to obtain 38 mg (yield 30%) of dipropargyl-dinor-8,9-anhydroerythromycin A
6,9-hemiketal propargyl bromide (compound 129) in white powder.
Example 119 By using 50 mg of the compound 117 and 0.1 ml of iodomethane, the same processing as in Example 50 was conducted to obtain 52 mg (yield 86%) of 8,9-anhydroerythromycin A 6,9-hemiketal isopropyl iodide (compound 130) in white powder.
Example 120 By using 29 mg of the compound 118 and 0.4 ml of iodomethane, the same processing as in Example 50 was conducted to obtain 30 mg (yield 86%) of 8,9-anhydroerythromycin A 6,9-hemiketal isobutyl iodide (compound 131) in white powder.
Example 121 150 mg of the compound 27 was dissolved in 3 ml of chloroform, then 1 ml of butyl iodide was added thereto and the mixture was heated under reflux for 3 days. The same processing as in Example 50 was hereinafter conducted to obtain 121 mg (yield 64%) of 8,9-anhydroerythromycin A 6,9-hemiketal butyl iodide (compound 132) in white powder.
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Example 122 1~0 mg of the ccmpound 27 was dissolved in 2 ml of chloroform, then 0.3 ml of cyclopropylmethyl bromide was added thereto and the mixture was heated under reflux for 2 days.
The same processing as in Example 50 was hereinaf~cer conducted to obtain 145 mg (yield 81%) of 8,9-anhydroerythromycin A 6,9-hemiketal cyclopropylmethyl bromide (compound 133) in white powder.
Example 123 150 mg of the compound 27 was dissolved in 2 ml of chloroform, then 0.5 ml of crotyl bromide was added thereto and the mixture was allowed to stand at room temperature for 6 hours. The same processing as in Example 50 was hereinafter conducted to obtain 175 mg (yield 98%) of 8,9-anhydroerythromycin A 6,9-hemiketal crotyl bromide (compound 134) in white powder.
Example 124 150 mg of the compound 27 was dissolved in 1.5 ml of chloroform, then 0.5 ml of 2,3-dibromopropene was added thereto and the mixture was allowed to stand at room temperature for 1 day. The same processing as in Example 50 was hereinafter conducted to obtain 111 mg (yield 58%) of 8,9-anhydroerythromycin A 6,9-hemiketal 2-bromo allyl bromide (compound 135~ in white powder.
~28~
Example 125 150 mg of the compound 27 was dissolved in 3 ml of chloroform, then 0.5 ml of propargyl chloride was added thereto and the mixture thereof was heated under reflux for 1 day. The same processing as in Example 50 was conducted to obtain 156 mg (yield 94~) of 3,9-anhydroerythromycin A 6,9-hemiketal propargyl chloride (compound 136) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 104 - 125 are shown in Table 17.
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Example 126 73.5 mg of the compound 32 was dissolved in 0.8 ml of methanol, and 0.2 ml of water was added thereto, followed by addition of 66.4 mg of CH3COONa 3H20. The reaction mixture was heated at 50C, and stirred after 26 mg of iodine was added thereto. In order to maintain the pH of the reaction mixture at 8 to 9, 0.4 ml portions of lN aqueous sodium hydroxide solution were added thereto after 10 minutes, 30 minutes and 1 hour, respectively, and the stirring was further continued for l hour. The solution was thereafter poured into 100 ml of dilute aqueous ammonia and the resultant product was extracted with chloroform. The extract was washed with dilute aqueous ammonia and dried with anhydrous sodium sulfate.
Thereafter, the solvent was distilled off under reduced pressure. The residue was purified by silica gel column chromatography (eluant: chloroform-methanol-conc. aqueous ammonia (15 : l : 0.1)) to obtain 51 mg tyield 70%~ of 11,12-di-O-acetyl-de-N-methyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 137) in white powder.
Example 127 By using 79 mg of the compound 137, 0.17 ml of diisopropylethylamine and 0 16 ml of iodomethane, the same processing as in Example 106 was conducted to obtain 30 mg (yield 37%) of 11,12-di-O-acetyl-N-ethyl-nor-8,9-anhydroerythromycin A 6,9r~hemiketal (compound 138) in white powder.
2~
D
Example 128 By using 500 mg of the compound 20, 468 mg of CH3COONa 3H2O and 170 mg of iodine, the same processing as in Example 126 was conducted to obtain 413 mg (yield 84%) of de-N-methyl-8,9-anhydroerythromycin A 6,9-hemiketal cyclic 11,12-carbonate (compound 139) in white powder.
Example 129 By using 350 mg of the compound 139, 0.84 ml of diisopropylethylamine and 0.77 ml o iodoethane, the same processing as in Example 106 was conducted to obtain 254 mg (yield 69%) of N-ethyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal cyclic 11,12-carbonate (compound 140) in white powder.
Example 130 By using 24.8 mg of 8,9-anhydroerythromycin B 6,9-hemiketal (reference: P. Kurath, et al., Experientia, 27, 362, 1971) and 0.2 ml of bromoethane, the same processing as in Example 97 was conducted to obtain 20 mg (yield 69%) of 8,9 anhydroerythromycin B 6,9-hemiketal ethyl bromide (compound 141) in white powder.
Example 131 By using 24.7 mg of 8,9-anhydroerythromycin B 6,9-hemiketal and 0.05 ml of propargyl bromide, the same processing as in Example 5Q was conducted to obtain 24 mg .~ .
~ 28~
l~3 _ ~ _ " ~
(yield 83%) of 8,9-anhydroerythromycin B 6,9-hemiketal propargyl bromide (compound 142) in white powder.
Example 132 By using 50 mg of the compound 54 and 0.3 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 54 mg (yield 93%) of 11,12-O-isopropylidene-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 143) in white powder.
Exam~le 133 By using 50 mg of the compound 39 and 0.3 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 55 mg (yield 96%) of 8,9-anhydroerythromycin A 6,9-hemiketal 11~12-phenylboronate propargyl bromide (compound 144) in white powder.
Example 134 By using 100 mg of the compound 20 and 0.3 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 108 mg (yield 93%) of 8,9-anhydroerythromycin A 6,9-hemiketal 11,12-cyclic carbonate propargyl bromide (compound 145) in white powder.
Example 135 By using 100 mg of the compound 37 and 0.3 ml of propargyl bromide, the same processing as in Example 50 was ~3~28 D ~
conducted to obtain 107 mg (yield 93~) of 8,9-anhydroerythromycin A 6,9-hemiketal 11,12-sulfite propargyl bromide (compound 146) in white po~der.
Example 136 100 mg of the compound 8 was dissolved in 2 ml of dry dimethyl sulfoxide, and ~o this, were added with 1 ml of acetic anhydride and 0.3 ml of acetic acid. The reaction mixture was allowed to stand for 1 day at room temperature.
Thereafter, the same processing as in Example 39 was conducted to obtain 65 mg (yield 56%) of 2'-O-acetyl-4"-O-~ormyl-11,12-di-O-methylthiomethyl-8,9-anhydroerythromycin A 6,9-hemiketal (compound 147) in white powder.
Example 137 150 m~ of the compound 147 was dissolved in 6 ml of methanol, and to this, was added with 1 ml of conc. aqueous ammonia. The reaction mixture was heated, for 2 days under reflux. Thereafter, the same processing as in Example 40 was conducted to obtain 105 mg (yield 76%) of 11,12-di-O-methylthiomethyl-8,~-anhydroerythromycin A 6,9-hemiketal (compound 148) in white powder.
Example 138 By using 100 mg of the compound 148 and 0.2 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 98 mg (yield 86%) of 11,12-di-O-13~2~
~5 - 13~ -methylthiomethyl-8,9-anhydroerythromycin A 6,g-hemiketal propargyl bromide (compound 149) in white powder.
Example 139 99 mg of the compound 1 was dissolved in 3 ml of chloroform, then 0~5 ml of propargyl bromide was added thereto and the mixture was allowed to stand at room temperature for 3 hours. The same processing as in Example 50 was hereinaft~r conducted to obtain 76 mg (yield 66~) of 2'-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 150) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 126 - 139 are shown in Table 18.
~1 28~
l~
R3 ~f ~; CH3 H3 C~ ~H3 CHa ~1/ CH3 ~a Table 18 (a) CH3 _ . . ~ .
No. Rl R2 R3 R4 X [~]D (_ 1.0) _ _ _ _ . __ __ 137 H H OAc OAc N -17.0 (CHC13) . ~CH3 138 H H OAc OAcN~C2H5 -11.8 (CHC13) _ ~ ~. .. _.:. .. ,_ .. _.. _____ 139 H H _O~C=O N~CH3 _30.0 (CHC13) .
140 H H ~C=O ~C~3 _ -30.8 ~CHC13) 141 H H OH H N-CH3 Br -18.8 (CH30H) 142 H H OH H N~CH3 Br -23.6 (CH30H) . CH2C-CH
_ _ .
143 H H CN-~H3 Br -23.2 (CH30H) O ' CH CH2C-'CH
__ ____ _ _ 144 H H ~ B-P~ N~CH3 Br _55,4 (CH30H) . __ _ _ .
145 H H ~~ C=O~ ~CH3 ~ -2g.6 (CH30H) _ ' -O CH2C-CH
.
.. . . .
,~1 ' 1 3 1 2 8 ~ 2 ,.j.~..~
Table 18 (a) ...
No. Rl R2 R3 R4 X [a]D (c 1.0~
. ,.. ~- - ... .. ~ _._ ._ . _._ . _o ~ ,CH3 ~
146 H H ~ S=O N-CH3 ~r -31.4C tCH30H) _ .__ _ . ...... ... . _.. _ ....
147 Ac CHO OCH2SCH3OCH2scH3 N(CH3)2 -37.2 (CHC13) . ~ . . . __ 148 H H OCH2scH3OCH2SCH3 N(CH3)2 -34.6 (CHC13) _ ~ ~CH3 ~
149 H H OCH2scH30CH2SCH3 N-CH3 Br -32.2 (CH30H) . ,. ._ . _ _ _ _ ~ ,CH3 150 Ac H OH OH N-CH3 B} -41.2 (CH30H) _ CH2C~CH . .. _ _ D ~ 3~28~
Table 18 (b) . ~ .__ NMR spectrum ~ value ppm Compound ~ ___ No. 8-Me (s, 3H) 3"-OMe (s, 3H) Others (solvent) ~ _ 1.99 (OAc, s, 3H), 2.03 (OAc, s, 3H) 137 1.59 3.34 2.42 (3'-NMe, s, 3H) (CDC13) 1.99 (OAc, s, 3H), 2.03 (OAc, s, 3H) 138 1.60 3.34 2.23 (3'-NMe , s, 3H) (CDC13) _ _ _ . __, , _ 139 1.62 3.35 2.42 (3'-NMe, s, 3H) (CDC13) _ _ 140 1.61 3.35 2.23 (3'-NMe , s, 3H) (CDC13) . _ ~_ _ 141 1.58 3.38 3.14 (3'-NMe2, s, 6H) (CD30D) .. __ _ . . .___ ._ __ 142 1.58 3.39 3.25 (3'~NMe2, s, 6H) (CD30D) ~ ~ CH3 1.3B (~ C~ , s, 6H) (CD30D) 143 1.62 3.39 CH3 3.27 (3'-NMe2, s, 6H) . . _ . _ 3.28 (3'-NMe2, s, 6H) 144 1.62 3.39 (CD30D) 7.3 - 7.8 (Ph, m~ 5H) .
145 1.61 3.53 3.37 (3'-NMe2, s, 6H~ (CDC13) _ . .__ 146 1.57 3.39 3.39 (3'-NMe2, s, 6H) (CD30D) .... . __ 2.04 (2'-OAc, s, 3H), 147 1.58 3.36 2.27 (3'-NMe2, s, 6H), (CDC13) 8.19 (4"-CHO, s, lH) 2.22 (11-SCH3, s, 30 , 148 1.58 3.35 2.24 (12-SCH3, s, 3H), (CDC13) _ _ ~ 2.29 (3'-NMe2, s, 6H) o - ~- 131~8~
.......
Table 18 (b) . ._ .
Compound ~ NMR spect r~m ~ value ppm ~o. 8-Me (s, 3H) 3"~0Me (s, 3H) Others (solvent) ... . _ .__--2.22 (SCH3, s, 6H), 149 1.58 3.39 (CD30D) .. 3.25 (3'-NMe2, 5, 6H) _ ._ .__ 2.20 (2'-OAs, s, 3H), 150 1.56 3.38 (CD30D) _._ 3.32 (3'-NMe2, S, 6H) _ .. __ I3~ ~ 31~8~
~.
Example 140 150 mg of the compound 84 was dissolved in 3 ml of chloroform, then 0.5 ml of propargyl chloride was added thereto and the mixture thereof was heated under reflux for 1 day. Thereafter, the same processing as in Example 50 was conducted to obtain 142 mg (yield 86%) of 9-dihydroerythromycin A 6,9-epoxide propargyl chloride (compound 151) in white powder.
Example_141 By using 143 mg of the compound 84, 27 ~1 of acetic anhydride and 31 ~1 of pyridine, the same processing as in Example 23 was conducted to obtain 125 mg (yield 83%) of 2'-O-acetyl-9-dihydroerythromycin A 6,9-epoxide (compound 152) in white powder.
Example 142 150 mg of the compound 84 was dissolved in 3 ml of chloroform, then 0.5 ml of benzyl chloride was added thereto and the mixture was heated under reflux for 38 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 155 mg (yield 81%) of 9-dihydroerythromycin A 6,9-epoxide benzyl chloride (compound 153) in white powder.
a 131 131 28~7 D Ex~mple 143 150 mg of the compound 84 was dissolved in 3 ml of chloroform, then 0.5 ml of 1-bromo-2-fluoroethane was added thereto, and the mixture was heated under reflux for 7 days.
Thereafter, the same processing as in Example 50 was conducted to obtain 66 mg (yield 37%) of 9-dihydroerythromycin A 6,9-epoxide 2-fluoroethyl bromide (compound 154) in pale yellow powder.
Example 144 150 mg of the compound 84 was dissclved in 3 ml of chloroform, then O.S ml of cyclopropylmethyl bromide was added thereto and the mixture was heated under reflux for 38 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 153 mg (yield 86%) of 9-dihydroerythromycin A 6,9-epoxide cyclopropylmethyl bromide (compound 155) in white powder.
Exam~le 145 150 mg of the compound 84 was dissolved in 3 ml of chloroform, then 0.5 ml of 3-butenyl bromide was added thereto, and the mixture was heated under reflux for 38 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 113 mg (yield 63~) of 9-dihydroerythromycin A 6,9-epoxide 3-butenyl bromide (compound 155) in white powder.
I3 ~3~o-~
Example 146 125 mg of the compound 152 was dissolved in 3 ml of chloroform, then 0.5 ml of propargyl bromide was added thereto and the mixture thereof was allowed to stand at room temperature for 3 hours. Thereafter, the same processing as in Example 50 was conducted to obtain 114 mg (yield 79%) of 2'-O-acetyl-9-dihydroerythromycin A 6,9-epoxide propargyl bromide (compound 157) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 140 - 146 are shown in Table 19.
, . . .
133 ~3~2~
-- ,3~--_ ~t~ r~ ~:) X ~ ~ ~
a\~, z \1/ \
.~. .
_ 13~
~ ~ s~
l3~
D - ~
Example 147 By using 64 mg of 6-O-methylerythromycin A
(reference: S. Morimoto et al., J. Antibiotics, 37, 187, 1984) and 0.1 ml of propargyl bromide, the same processing as in Example 50 was conducted to obtain 73 mg (yield 98~) of 6-O-methylerythromycin A propargyl bromide (compound 158) in white powder.
Example 148 200 mg of erythromycin A was dissolved in 3 ml of chloroform, then 0.3 ml of ethyl iodide was added thereto and the mixture was heated under reflux for 20 hours. Thereafter, the same processing as in Example 54 was conducted to obtain 150 mg (yield 62~) of erythromycin A ethyl iodide (compound 159) in pale yellow powder.
Example 149 100 mg of erythromycin A was dissolved in 2 ml of chloroform, then 0.2 ml of allyl bromide was added thereto, and the mixture was stirred at room temperature for 5 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 97 mg (yield 83%) of erythromycin A allyl bromide (compound 160) in white powder.
Exa~
200 mg of erythromycin A was dissolved in 3 ml of chloroform, then 0.2 ml of propargyl bromide wa~ added thereto ,~
13(~ 2 8 ~ ~
and the mixture was stirred at room temperature fsr 3 hours.
Thereafter, the same processing as in Example 54 was conducted to obtain 202 mg (yield 87~) of erythromycin A propargyl bromide (compound 161) in white powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 147 - 150 are shown in Table 20.
l31 13128 r) ~T' ~ ~ ro r~ ~ r~
'_' :, ~
== ` ~
X, = H IS~ m ~: ~1 ~ :~ ~
;: ~7' ~ ~ ::: ~ ~:
~:' __ __ __ _, _u~Z _l ~ ~s _~
l3~ 2g ~J
- 1~1 --.~
Example 151 50 mg of the compound 9 was dissolved in 1 ml of chloroform, then 0.2 ml of methyl iodide was added thereto and the mixture was stirred at room temperature for 3 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 49 mg (yield 83~) of 4"-O-formyl-8,9-anhydroerythromycin ~ 6,9-hemiketal methyl iodide (compound 162) in pale yellow powder.
Example 152 50 mg of the compound 9 was dissolved in 2 ml of chloroform, then 0.5 ml of ethyl iodide was added thereto and the mixture was heated under reflux for 20 hours.
Subsequently, the same processing as in Example 50 was conducted to obtain 38 mg (yield 13~) of 4"-O-formyl-8,9-anhydroerythromycin A 6,g-hemiketal ethyl iodide (compound 163) in pale yellow powder.
Example 153 50 mg of the compound 9 was dissolved in 2 ml of chloroform, then 0.5 ml of propyl iodide was added thereto and the mixture was heated under reflux for 48 hours.
Subsequently, the same processing as in Example 50 was conducted to obtain 34 mg (yield 56%) of 4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal propyl iodide (compound 164) in pale yellow powder.
~3~2~
l~q D - ~
Example 154 50 mg of the compound 9 was dissolved in 1 ml of chloroform, then 0.2 ml of propargyl bromide was added thereto and the mixture was stirred at room temperature for 3 hours.
Subsequently, the same processing as in Example 50 was conducted to obtain 51 mg (yield 87%) of 4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 165) in white powder.
Examp~e 155 50 mg of the compound 9 was dissolved in 1 ml of choloroform, then 0.2 ml of allyl bromide was added thereto and the mixture was stirred at room temperature for 5 hours.
Subsequently, the same processing as in Example 50 was conducted to obtain 47 mg ~yield 80%) of 4"-O-formyl-8,9-anhydroerythromycin A 6,9-hemiketal allyl bromide (compound 166) in white powder.
Example_156 50 mg of the compound 50 was processed in the same manner as in Example 151 to obtain 50 mg (yield 84%) of ll-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal methyl iodide (compound 167) in pale yellow powder.
Example 157 50 mg of the compound 50 was processed in the same manner as in Example 152 to obtain 39 mg (yield 65%) of ll-O-t - ~ -acetyl-8,9-anhydroerythromycin A 5,9-hemiketal ethyl iodide (compound 168) in pale yellow powder.
Exam~le 158 50 mg of the compound 50 was processed in the same manner as in Example 153 to obtain 33 mg (yield 54~) of ll-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal propyl iodide (compound 169) in pale yellow powder.
Example 159 50 mg of the compound 50 was processed in the same manner as in Example 154 to obtain 49 mg (yield 84%) of ll-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 170) in white powder.
Example 160 50 mg of the compound 50 was processed in the same manner as in Example 155 to obtain 46 mg (yield 79%) o ll-O-acetyl-8,9-anhydroerythromycin A 6,9-hemiketal allyl bromide (compound 171) in white powder.
Examele 161 50 mg of the compound 25 was dissolved in 1 ml of chloroform, then 0.2 ml of propargyl bromide was added thereto and the mixture was stirred at room temperature for 3 hours.
Thereafter, the same processing as in Example 50 was conducted to obtain 44 mg (yield 77~) of 4"-O-formyl-ll-O-~ 3~28~, -- ~3, --mesyl-8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide (compound 172) in white powder.
Example 162 50 mg of the compound 57 was dissolved in 2 ml of chloroform, then 0.3 ml of ethyl iodide was added thereto and the mixture thereof was heated under reflux for 20 hours.
Subsequently, the same processing as in Example 50 was conducted to obtain 39 mg (yield 66%) of 11-O-mesyl-3,9-anhydroerythromycin A 6,9-hemiketal ethyl iodide (compound 173) in pale yellow powderO
Ex~mple 163 50 mg of the compound 57 was dissolved in 2 ml of chloroform, then 0.3 ml of propyl iodide was added thereto and ; the mixture was heated under reflux for 48 hours.
Subsequently, the same processing as in Example 54 was conducted to obtain 34 mg (yield 56%) of 11-O-mesyl-8,9-anhydroerythromycin A 6,9-hemiketal propyl iodide ~compound 174) in pale yellow powder.
The structural formulae, specific rotatory powers and NMR spectrum values of the compounds obtained in Examples 151 - 163 are shown in Table 21.
ILf2 13~28~
, ~,.... ~
- , ~ , ~ , o o Y o u o~
~ ~,~ ~, ~ _1 tU -I
U~ ~^~ _ O~--~_ C~_ 0--D O ~ _~ o ,-1 ct~
(9 r.~ o ~Ul Z ,1 o~ C~
~ ZZ~
3~ " .: ~n o~ c~,~ .,. .~.
.~ ~o Iw^~ ~ ~
~; N tq !-'! O O O O O
O O - O ~r) ~) ~ t~'l l r) _ U ¦ _ I I _ _ X 1_1 ~_1 D:l :~:
C~ ~ ul r- U ~
~ ~ ~ ~: ~ r~ ~ C~
Z W W W W O
~' Z 1.~ ~1 _ 111 ~O
., - t~3 ~ 31~
,~
D _ -- 5 ~ ~ . 3 ~ 3~ ~ ;~
u~ r~7 r~ ~7 ~ ~u~ f. r~
u~ tn u~ u~ 0~ O u~ ~n o CJ O ~, ~, L)U~ . U~ U~
~ ~, o o - ~ ~, o o o ~ ~, ~ ~, _1 _1 _I ~ _I _( .~ ~ ~ O r~ N _l N _l O_~ ~1 -- N -- N -- N -- ~ ~ 1 -- r') -- ~ --C~ ~ __ _ E u~
c) _~ ~ ~ ~ o~ ,_ ~ r- r~
~ r~ r~ ~ ~ ~ ~ ~ ~
E _~ _ ~ _ O ~D
U~ N ~ Il~ O~ I_ ~r U'~ I_ ~D
Z ,,, ~ ~ ~ ~ ~ ~ ~
~ __. _ :~ .
U~ o o o o o _l o o _ ~D ~D ~D ~D ~D ~D ~
:Z~ _i ~ _1 ~ ~i ~i _~ _i C: . _ .
O O O O O O O O
~_) o o ~r ~ er al ~ ~
~ N O 1~ ~ t`~ Q ~D I~
N ~ 1 ~1 ,_1 _J ~ ~_1 N N t~
~ _ _~ ~1 x ~ ~ ~ m m m H H
. N
~ ~J ~
~ In I~ ~ CJ C) ul I_ C,~ ~ C.) ~ N N 3~ ~
r~ ~ ~> r-~ ~7 3::
N ~ :~ :~ :~ m o ~ ~
C:; ~ O U ~,) ~,) ~ ~ N
O O O O O O O O
t.) C~ O C.) ~ U~ U~ U~
O
~ :r: ~ :~ ~: :S m ~
_ . _ __ _ _ c ,_ c~ cr~ o _l r~ r~ ~
E æ _, _1 ~1 _1 ~1 _1 ~1 _1 _ .
~ ~3~2~
As hereinbefore described, the compound (1) of the present invention has an excellent effect of stimulating the gastrointestinal contractive motion, and the preparation containing this compound can be advantageously used as a digestive ~ract contractive motion stimulant.
Claims (26)
1. A compound represented by the formula:
(wherein:
R1 is:
a hydrogen atom, a C1-5 alkanoyl radical, a C7-11 aroyl radical, a C1-6 alkylsulfonyl radical, a di-C1-6 alkyloxyphosphoryl radical, or a di-C6 10 aryloxyphosphoryl radical;
R2 is:
a hydrogen atom, a C1-6 alkanoyl radical which is unsubstituted or substituted by C1-3 alkoxycarbonyl radical, a C7-11 aroyl radical, a C1-6 alkylsulfonyl radical, a C6-12 arylsulfonyl radical, a C7-20 aralkylsulfonyl radical, or a C1-3 alkyl radical which is unsubstituted or substituted by C2 6 alkoxyalkoxy radical;
Z stands for the formula:
[in which R5 is:
a hydrogen atom, a C1-6alkanoyl radical, a C7-11 aroyl radical, a C1-6 alkylsulfonyl radical, a C6-12 arylsulfonyl radical, a C7-20 aralkylsulfonyl radical, or a C1-3 alkyl radical which is unsubstituted or substituted by a C1 3 alkoxy radical;
and R is:
a hydrogen atom, a C1-6 alkanoyl radical, or a C1-3 alkyl radical which is unsubstituted or substituted by C1-3 alkylthio radical], [in which Y stands for the formula B-R8 (wherein R8 stands for C6-10 aryl radical), or >C=O, >S=O, >C=S, or the formula:
(wherein each of R9 and R10, which may be the same or different, is a hydrogen atom or a C1-6 alkyl radical)];
Ra stands for the formula:
[in which Rb is a hydrogen atom or a C1-6 alkyl radical which is unsubstituted or substituted by a hydroxyl group and Rc is a hydrogen atom, a C2-6 alkenyl radical, a C2-6 alkynyl radical, or a C2-6 alkyl radical which is unsubstituted or substituted by a hydroxyl radical;
or Rb and Rc together with the nitrogen atom to which they are attached form a C3-6 cyclic alkylamino radical] or [in which Rd is a C1-6 alkyl radical, Re and Rf, which may be the same or different, are each a C1-6 alkyl radical which is unsubstituted or substituted by a substituent selected from the group consisting of hydroxyl, carboxyl, cyano, halogen, C3-5 cycloalkyl and C1-3 alkoxycarbonyl; a C2-6 alkenyl radical; or a C2-6 alkynyl radical; or Re and Rf together with the nitrogen atom to which they are attached form a C3-6 cyclic alkylamino radical;
and X- stands for a halogen anion]; and R11 and R12 each represent a hydrogen atom or both taken together form a chemical bond;
with the proviso that Y is not >C=O, when Ra is a trimethylammonio radical, R11 and R12 taken together form a chemical bond, and each of R1 and R2 is a hydrogen atom) or a salt thereof.
(wherein:
R1 is:
a hydrogen atom, a C1-5 alkanoyl radical, a C7-11 aroyl radical, a C1-6 alkylsulfonyl radical, a di-C1-6 alkyloxyphosphoryl radical, or a di-C6 10 aryloxyphosphoryl radical;
R2 is:
a hydrogen atom, a C1-6 alkanoyl radical which is unsubstituted or substituted by C1-3 alkoxycarbonyl radical, a C7-11 aroyl radical, a C1-6 alkylsulfonyl radical, a C6-12 arylsulfonyl radical, a C7-20 aralkylsulfonyl radical, or a C1-3 alkyl radical which is unsubstituted or substituted by C2 6 alkoxyalkoxy radical;
Z stands for the formula:
[in which R5 is:
a hydrogen atom, a C1-6alkanoyl radical, a C7-11 aroyl radical, a C1-6 alkylsulfonyl radical, a C6-12 arylsulfonyl radical, a C7-20 aralkylsulfonyl radical, or a C1-3 alkyl radical which is unsubstituted or substituted by a C1 3 alkoxy radical;
and R is:
a hydrogen atom, a C1-6 alkanoyl radical, or a C1-3 alkyl radical which is unsubstituted or substituted by C1-3 alkylthio radical], [in which Y stands for the formula B-R8 (wherein R8 stands for C6-10 aryl radical), or >C=O, >S=O, >C=S, or the formula:
(wherein each of R9 and R10, which may be the same or different, is a hydrogen atom or a C1-6 alkyl radical)];
Ra stands for the formula:
[in which Rb is a hydrogen atom or a C1-6 alkyl radical which is unsubstituted or substituted by a hydroxyl group and Rc is a hydrogen atom, a C2-6 alkenyl radical, a C2-6 alkynyl radical, or a C2-6 alkyl radical which is unsubstituted or substituted by a hydroxyl radical;
or Rb and Rc together with the nitrogen atom to which they are attached form a C3-6 cyclic alkylamino radical] or [in which Rd is a C1-6 alkyl radical, Re and Rf, which may be the same or different, are each a C1-6 alkyl radical which is unsubstituted or substituted by a substituent selected from the group consisting of hydroxyl, carboxyl, cyano, halogen, C3-5 cycloalkyl and C1-3 alkoxycarbonyl; a C2-6 alkenyl radical; or a C2-6 alkynyl radical; or Re and Rf together with the nitrogen atom to which they are attached form a C3-6 cyclic alkylamino radical;
and X- stands for a halogen anion]; and R11 and R12 each represent a hydrogen atom or both taken together form a chemical bond;
with the proviso that Y is not >C=O, when Ra is a trimethylammonio radical, R11 and R12 taken together form a chemical bond, and each of R1 and R2 is a hydrogen atom) or a salt thereof.
2. The compound according to claim 1, wherein R1 is a hydrogen atom or a C1-5 alkanoyl radical.
3. The compound according to claim 1, wherein R2 is a hydrogen atom, a C1-5 alkanoyl radical or a C1-5 alkylsulfonyl radical.
4. The compound according to claim 1, wherein Z has the formula:
[in which each of R5 and R6 is independently selected from the group consisting of a hydrogen atom and a C1-5 alkanoyl radical].
[in which each of R5 and R6 is independently selected from the group consisting of a hydrogen atom and a C1-5 alkanoyl radical].
5. The compound according to claim 1, wherein Y is selected from the group consisting of:
>S=0, >C=0, >C=S, >B-Phenyl, and >C(CH3)2.
>S=0, >C=0, >C=S, >B-Phenyl, and >C(CH3)2.
6. The compound according to claim 1, wherein Ra has the formula [in which Rb stands for C1-6 alkyl radical which is unsubstituted or substituted with a hydroxyl radical and Rc stands for C2-6 alxyl radical which is unsubstituted or substituted with a hydroxyl radical].
7. The compound according to claim 1, wherein Ra is N-methyl-N-ethylamino radical.
8. The compound according to claim 1, wherein Ra has the formula:
[in which Rd is a C1-6 alkyl radical, Re and Rf, which may be the same or different, are each a C1-6 alkyl radical (which is unsubstituted or substituted by a substituent selected from the group consisting of hydroxyl, carboxyl, cyano, halogen, C3-5 cycloalkyl and C1-3 alkoxycarbonyl radical); a C2-6 alkenyl radical; or a C2-6 alkynyl radical or Re and Rf together with the nitrogen atom to which they are attached form a C5-7 cyclic alkylamino radical, and X is a halogen anion].
[in which Rd is a C1-6 alkyl radical, Re and Rf, which may be the same or different, are each a C1-6 alkyl radical (which is unsubstituted or substituted by a substituent selected from the group consisting of hydroxyl, carboxyl, cyano, halogen, C3-5 cycloalkyl and C1-3 alkoxycarbonyl radical); a C2-6 alkenyl radical; or a C2-6 alkynyl radical or Re and Rf together with the nitrogen atom to which they are attached form a C5-7 cyclic alkylamino radical, and X is a halogen anion].
9. The compound according to claim 8, wherein Re and Rf form a 5 to 7 membered cyclic alkylamino radical together with the adjacent nitrogen atom.
10. The compound N-ethyl-nor-8,9-anhydroerythromycin A
6,9-hemiketal.
6,9-hemiketal.
11. The compound 11,12-di-0-acetyl-N-ethyl-nor-8,9-anhydroerythromycin A 6,9-hemiketal.
12. The compound N-ethyl-nor-8,9-anhydroerythromycin A
6,9-hemiketal cyclic-11,12-carbonate.
6,9-hemiketal cyclic-11,12-carbonate.
13. The compound 8,9-anhydroerythromycin A 6,9-hemiketal propargyl bromide.
14. The compound 8,9-anhydroerythromycin A 6,9-hemiketal propargyl chloride.
15. The compound 8,9-anhydroerythromycin A 6,9-hemiketal ethyl bromide.
16. The compound 11,12-di-0-acetyl-8,9-anhydroerythromycin A
6,9-hemiketal methyl iodide.
6,9-hemiketal methyl iodide.
17. The compound 8,9-anhydroerythromycin A 6,9-hemiketal 2-hydroxyethyl bromide.
18. The compound 11,12-di-0-acetyl-8,9-anhydroerythromycin A
6,9-hemiketal propargyl bromide.
6,9-hemiketal propargyl bromide.
19. The compound N-isopropyl-nor-8,9-anhydroerythromycin A
6,9-hemiketal.
6,9-hemiketal.
20. The compound according to claim 1, having the formula:
[wherein R1 stands for H or CH3CH2CH2CO;
R2 stands for H CHO, CH3CO, CH3SO2;
R5, when taken alone, stands for H, CH3CO, CH3CH2CO, CH3CH2CH2CO, CH3(CH2)3CO, CH3(CH2)4CO, CH3 or CH3SO2;
R6, when taken alone, stands for H, CH3CO, CH3CH2CO or CH3SCH2; or R5 and R6, when taken together, stand for ,, Ph or and Ra stands for , , -NH(CH3), -N(CH3)(C2H5), , , , , -N(C2H5)2, -NH(C2H5), , , ?(CH3)C(CH2CO2CH3)-X, , , , -N(CH3)(CH2CH=CH2), -N(CH3)(CH2CH2CH3), -N(CH2)(CH=CH2) , , ?(CH3)(CH2CH=CH2)-, , ,,, , or , (where X is a halogen atom) ].
[wherein R1 stands for H or CH3CH2CH2CO;
R2 stands for H CHO, CH3CO, CH3SO2;
R5, when taken alone, stands for H, CH3CO, CH3CH2CO, CH3CH2CH2CO, CH3(CH2)3CO, CH3(CH2)4CO, CH3 or CH3SO2;
R6, when taken alone, stands for H, CH3CO, CH3CH2CO or CH3SCH2; or R5 and R6, when taken together, stand for ,, Ph or and Ra stands for , , -NH(CH3), -N(CH3)(C2H5), , , , , -N(C2H5)2, -NH(C2H5), , , ?(CH3)C(CH2CO2CH3)-X, , , , -N(CH3)(CH2CH=CH2), -N(CH3)(CH2CH2CH3), -N(CH2)(CH=CH2) , , ?(CH3)(CH2CH=CH2)-, , ,,, , or , (where X is a halogen atom) ].
21. The compound according to claim 20, wherein Ra stands for -N(CH3)(C2H5) or .
22. A pharmaceutical preparation for the therapy of digestive malfunctions in mammals, which comprises a pharmaceutically acceptable carrier and the compound according to any one of claims 1 to 21 or a pharmaceutically acceptable salt thereof in an amount effective to stimulate gastrointestinal contraction.
23. A process for preparing a compound of the formula [1] as defined in claim 1, which comprises:
reacting a compound of the formula:
[2]
(wherein Z" stands for the formula:
or and R11, R12 and Ra have the meanings given in claim 1, provided that one or more reactive groups which are not desired to be reacted during the reaction may be protected) [a] an acylating agent to obtain a compound of the formula [1] which is characterized at least one of the following;
(i) R1 is the alkanoyl, aroyl, alkylsulfonyl, dialkoxyphosphoryl or diaryloxyphosphoryl radical, (ii) R2 is the alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl or aralkylsulphoryl radical, (iii) R5 is the alkanoyl, aroyl, and alkylsulfonyl, arylsulfonyl or aralkylsulfonyl radical, (iv) R6 is the alkanoyl radical, [b] an alkylating agent to obtain a compound of the formula [1] which is characterized at least one of the following:
(i) R2 is the optionally substituted alkyl, (ii) R5 is the optionally substituted alkyl, and (iii) R6 is the optionally substituted alkyl, [c] a boronating agent to obtain a compound of the formula [1] in which Z stands for the formula:
[in which Y stands for B-R8 and R8 is as defined in claim 1], [d] a (thio)carbonating agent to obtain a compound of the formula [1] in which Z stands for the formula:
[in which Y stands for >C=O or >C=S], [e] a sulfinylating agent to obtain a compound of the formula [1] in which Z stands for the formula:
[in which Y stands for >S=O], [f] a ketalyzing agent to obtain a compound of the formula [1] in which Z stands for the formula:
[in which Y stands for and R9 and R10 are as defined in claim 1], or [g] a combination of at least two or more of [a] through [f], and where required, removing a protective group if any.
reacting a compound of the formula:
[2]
(wherein Z" stands for the formula:
or and R11, R12 and Ra have the meanings given in claim 1, provided that one or more reactive groups which are not desired to be reacted during the reaction may be protected) [a] an acylating agent to obtain a compound of the formula [1] which is characterized at least one of the following;
(i) R1 is the alkanoyl, aroyl, alkylsulfonyl, dialkoxyphosphoryl or diaryloxyphosphoryl radical, (ii) R2 is the alkanoyl, aroyl, alkylsulfonyl, arylsulfonyl or aralkylsulphoryl radical, (iii) R5 is the alkanoyl, aroyl, and alkylsulfonyl, arylsulfonyl or aralkylsulfonyl radical, (iv) R6 is the alkanoyl radical, [b] an alkylating agent to obtain a compound of the formula [1] which is characterized at least one of the following:
(i) R2 is the optionally substituted alkyl, (ii) R5 is the optionally substituted alkyl, and (iii) R6 is the optionally substituted alkyl, [c] a boronating agent to obtain a compound of the formula [1] in which Z stands for the formula:
[in which Y stands for B-R8 and R8 is as defined in claim 1], [d] a (thio)carbonating agent to obtain a compound of the formula [1] in which Z stands for the formula:
[in which Y stands for >C=O or >C=S], [e] a sulfinylating agent to obtain a compound of the formula [1] in which Z stands for the formula:
[in which Y stands for >S=O], [f] a ketalyzing agent to obtain a compound of the formula [1] in which Z stands for the formula:
[in which Y stands for and R9 and R10 are as defined in claim 1], or [g] a combination of at least two or more of [a] through [f], and where required, removing a protective group if any.
24. A process for preparing a compound of the formula [1] as defined in claim 1 in which R11 and R12 together form a chemical bond, which process comprises:
treating under an acidic condition, a compound of the formula:
(wherein R1, R2 and Ra have the meanings given in claim 1 and Z''' has the same meanings as Z defined in claim 1, with the proviso that:
each of R1 and R2 is other than a hydrogen atom and each of R5 and R6 is other than a hydrogen atom, or Y is not >C=O, when Ra is a trimethylammonio radical).
treating under an acidic condition, a compound of the formula:
(wherein R1, R2 and Ra have the meanings given in claim 1 and Z''' has the same meanings as Z defined in claim 1, with the proviso that:
each of R1 and R2 is other than a hydrogen atom and each of R5 and R6 is other than a hydrogen atom, or Y is not >C=O, when Ra is a trimethylammonio radical).
25. A process for preparing a compound of the formula [1] as defined in claim 1 in which Ra is a radical of the formula:
or (wherein Rb, Rc, Rd, Re, Rf, and X are as defined in claim 1, provided that Rc is not a hydrogen atom and that Rf is not a hydrogen atom and Re and Rf do not form together a cyclic alkylamino) with the further proviso that Y is not >C=O, when Ra is a trimethylammonio radical, R11 and R12 together form a chemical bond and each of R1 and R2 is a hydrogen atom, which process comprises:
subjecting a compound of the formula:
[5]
(wherein R1, R2, R11, R12 and Z have the meanings given in claim 1 and R9 is a radical of the formula:
-NHRb or [wherein Rb, Rd and Re are as defined above]) to N-alkylation, N-alkenylation or N-alkynylation.
or (wherein Rb, Rc, Rd, Re, Rf, and X are as defined in claim 1, provided that Rc is not a hydrogen atom and that Rf is not a hydrogen atom and Re and Rf do not form together a cyclic alkylamino) with the further proviso that Y is not >C=O, when Ra is a trimethylammonio radical, R11 and R12 together form a chemical bond and each of R1 and R2 is a hydrogen atom, which process comprises:
subjecting a compound of the formula:
[5]
(wherein R1, R2, R11, R12 and Z have the meanings given in claim 1 and R9 is a radical of the formula:
-NHRb or [wherein Rb, Rd and Re are as defined above]) to N-alkylation, N-alkenylation or N-alkynylation.
26. A compound of the formula:
[1]
(whereln R1 is hydrogen;
R2 is hydrogen;
Z is a qroup of the formula wherein R5 is hydrogen and R6 is hydroqen);
Ra is a group of the formula:
[in which Rb is methyl, and Rc is ethyl or isopropyl], or Ra is a group of the formula:
X-[in which Rd is methyl, and Re and Rf which may be the same or different, are (1) a methyl, ethyl or isopropyl radical, each of which may be substituted by hydroxyl, cyano, halogen or cyclopropyl, or (2) a propargyl radical, or Re and Rf together form pyrrolidino or piperidino with the adjacent nitrogen atom, and X is a halogen anion]; and R11 and R12 both taken together form a chemical bond, or a salt thereof.
[1]
(whereln R1 is hydrogen;
R2 is hydrogen;
Z is a qroup of the formula wherein R5 is hydrogen and R6 is hydroqen);
Ra is a group of the formula:
[in which Rb is methyl, and Rc is ethyl or isopropyl], or Ra is a group of the formula:
X-[in which Rd is methyl, and Re and Rf which may be the same or different, are (1) a methyl, ethyl or isopropyl radical, each of which may be substituted by hydroxyl, cyano, halogen or cyclopropyl, or (2) a propargyl radical, or Re and Rf together form pyrrolidino or piperidino with the adjacent nitrogen atom, and X is a halogen anion]; and R11 and R12 both taken together form a chemical bond, or a salt thereof.
Applications Claiming Priority (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP190957/1985 | 1985-08-31 | ||
| JP190958/1985 | 1985-08-31 | ||
| JP19095785 | 1985-08-31 | ||
| JP19095885 | 1985-08-31 | ||
| JP4141386 | 1986-02-28 | ||
| JP41413/1986 | 1986-02-28 | ||
| JP41412/1986 | 1986-02-28 | ||
| JP4141286 | 1986-02-28 | ||
| JP12473986 | 1986-05-31 | ||
| JP124739/1986 | 1986-05-31 | ||
| JP124738/1986 | 1986-05-31 | ||
| JP12473886 | 1986-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1312862C true CA1312862C (en) | 1993-01-19 |
Family
ID=27550032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000516880A Expired - Fee Related CA1312862C (en) | 1985-08-31 | 1986-08-27 | Erythromycin derivative and process for preparing the same |
Country Status (9)
| Country | Link |
|---|---|
| KR (1) | KR940006547B1 (en) |
| CN (1) | CN1071433A (en) |
| AU (1) | AU593006B2 (en) |
| CA (1) | CA1312862C (en) |
| CS (1) | CS407791A3 (en) |
| DK (1) | DK412386A (en) |
| ES (1) | ES2000612A6 (en) |
| IL (1) | IL79774A0 (en) |
| PT (1) | PT83284B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4046072A (en) * | 1972-03-27 | 1973-10-04 | Abbott Lab | 6,9-oxygen bridged erythromycin derivatives |
| US4264765A (en) * | 1980-02-20 | 1981-04-28 | Abbott Laboratories | Salts of erythromycin A esters |
-
1986
- 1986-08-19 IL IL79774A patent/IL79774A0/en not_active IP Right Cessation
- 1986-08-19 AU AU61583/86A patent/AU593006B2/en not_active Ceased
- 1986-08-27 CA CA000516880A patent/CA1312862C/en not_active Expired - Fee Related
- 1986-08-29 ES ES8601522A patent/ES2000612A6/en not_active Expired
- 1986-08-29 PT PT83284A patent/PT83284B/en not_active IP Right Cessation
- 1986-08-29 DK DK412386A patent/DK412386A/en not_active Application Discontinuation
- 1986-08-30 KR KR1019860007277A patent/KR940006547B1/en not_active IP Right Cessation
-
1991
- 1991-12-27 CS CS914077A patent/CS407791A3/en unknown
-
1992
- 1992-11-13 CN CN92112950A patent/CN1071433A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DK412386A (en) | 1987-05-14 |
| CS407791A3 (en) | 1992-06-17 |
| IL79774A0 (en) | 1986-11-30 |
| KR940006547B1 (en) | 1994-07-22 |
| AU593006B2 (en) | 1990-02-01 |
| PT83284B (en) | 1988-07-01 |
| CN1071433A (en) | 1993-04-28 |
| PT83284A (en) | 1986-09-01 |
| AU6158386A (en) | 1987-03-05 |
| DK412386D0 (en) | 1986-08-29 |
| KR870002160A (en) | 1987-03-30 |
| ES2000612A6 (en) | 1988-03-01 |
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