Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
  • C07D498/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
  • C07D498/08—Bridged systems
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
  • A61P31/04—Antibacterial agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P33/00—Antiparasitic agents
  • A61P33/02—Antiprotozoals, e.g. for leishmaniasis, trichomoniasis, toxoplasmosis
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P35/00—Antineoplastic agents

Definitions

• the present invention relates to a novel compounded 4,5 -deoxymaytansinoid powder which is useful as a pharmaceutical and the like, and a method for producing the same.
• Higashide et al. *** have identified an ansamitocin group in a metabolite of a microorganism that appears to be a type of Nocardia, having the same mother nucleus as the above compound and differing only in the 3-ester side chain. ⁇ J and found that they have superior or superior antitumor activity to maytansine.
• X represents a hydrogen atom, an alkyl group or an ⁇ -alkyl group
• Y represents a hydrogen atom or a chlorine atom
• R represents a hydrogen atom or an acyl group derived from Rhapon Shun.
• Such an acyl group may be, for example, a saturated or unsaturated aliphatic acyl group, a saturated or unsaturated alicyclic group, an aromatic acyl group, and a 101-amino acid-type acyl group.
• Rl represents a hydrogen atom, an alkyl group, an alkenyl group, a cycloalkyl group, a cycloalkyl group or an aryl group, and these groups may have a substituent. Further, the above-mentioned cyclic group may be bonded to a carbo1 / 2 group through an alkylene chain]. One of them? In particular, examples having a substituent include those represented by the formula
• R 2 represents a hydrogen atom, an alkyl group, a ⁇ alkyl group or an aryl group; these groups may have a substituent; It may be bonded to a carbon atom.
• R 3 represents a hydrogen atom, an alkyl group, a ⁇ alkyl group or an aryl group; these groups may have a substituent; and the cyclic group may be bonded to the N atom via an alkylene chain.
• R4 represents a hydrogen atom, an aki group, an alkenyl group, a cycloalkyl group, a cycloalkyl group or an aryl group; these groups may have a substituent; and the cyclic group has an alkylene chain. May be bonded to a carb group on the sr atom through R 4 may also represent an alkoxy group or a benzyloxy group.
• Examples of the alkyl group represented by R 1 include an alkyl group having about 1 to 18 carbon atoms (eg, methyl, ethyl, propyl, isobrovir, butyl, isobuti, sec-butyl, tert-butyl, pentyl, isopentyl, 1 Methinolev hexyl, hexyl hexyl * 3, 3 heptyl, octyl, noni, de ⁇ , ⁇ decyl, dode, tridecyl, pentadecyl, heptadecyl groups), among which 1 to 1 carbon atoms About 6 alkyl groups.
• an alkyl group having about 1 to 18 carbon atoms eg, methyl, ethyl, propyl, isobrovir, butyl, isobuti, sec-butyl, tert-butyl, pentyl, isopentyl, 1 Methinolev
• Examples of the cycloalkyl group represented by Rl include a ⁇ chloroalkyl group having about 3 to 10 carbon atoms (eg, cyclobutybi, cyclobuty, cyclopentyl, ⁇ hexyl, cycloheptyl, cyclooctyl, norboyl) And cycloadamyl groups, for example, ⁇ chloroalkyl groups having about 3 to 10 carbon atoms (eg, 1-cyclobutenyl, 1-, 2-, or 3- ⁇ ). ⁇ ⁇ 2 ⁇ ⁇ ..
• Examples of the aryl group represented by R 1 include a phenyl group and a naphthyl group, and even a phenyl group.
• alkyl group, alkenyl group, cycloalkyl group, cycloalkyl group and aryl group as described above may have a substituent.
• substituents For example, meth, eth, propyl, isobrovir, buty, isobutyl, sec-butyl, tert-butyl) are also exemplified as substituents. These substituents are the same - may be substituted with up to three on a single I or different.
• the cyclic group (optionally substituted cycloalkyl, cycloalkyl and aryl groups) as R1 is bonded to the carbonyl group in the formula —C0R1 via an alkylene chain.
• alkylene chain include, for example, a linear or branched alkylene chain having about 14 carbon atoms (eg, methylene, ethylene, methylmethylene (ethylidene), provylene, butylene, 1-1, 2).
• Rl represents a cycloalkylalkyl group, ⁇ quaenylalkyl group or aralkyl group which may have a substituent.
• OMPI WIPO Methoximeti, butoxy ⁇ methi. Methiothiomethyl, methylthioethyl, ethiruchiethyl / U, isobrovitiethyl, buti / 1-ethyl, isobutithioethyl, acetyl ⁇ Rumethyl, Butoki ⁇ Ruboniechiru, Fukurosei Romechi, Kuguchiguchi Met J, Kuguchi ⁇ tyl, 3-kuroguchi Provir, 41-kuguchi trbuti, 3,3,3-Trichloroprobi, Toyhu Rometi, bromomethyl, 4-bromobuty, 5-bromopenty, odomethi fi, 2-2-ethyl, 1,1,1-dimethyl-2,2-dichloroethyl, 2-chloro-1-chloromethy //-1-methylethyl, ⁇ anomethy -Ruetyl and methyls
• Examples of the alkenyl group having 2 to 10 carbon atoms and having a substituent represented by R 1 include 2-couple bead.
• Examples of the cycloalkyl group having a substituent represented by R 1 and having 3 to 10 carbon atoms include 2,2-dimethoxybutane, 2,1-bicyclocyclobuty, 2-butylcyclopropyl, and 4-isobutycyclo.
• R 1 eg, chloroalkyl, 4-methylthiophene, 4-methylthiophene, 4-methyisulfol-phene
• Rl is, in effect, a form in which these cyclic groups and an alkylene chain are bonded.
• Examples of such ⁇ alkylalkyl groups include adamantylmethyl, cyclohexylmethyl, and 3-cycloalkyl.
• Examples of hexylbrovir, 2-cyclopentylmethyl, 2-cyclopentylethyl, etc. carboxylic groups include 4-bromobenzyl, 2-0.3- or 4-cyclopentyl, 2, 5- or 3,, 4-Dimethoxybenzene, 4 E butoxy Bae Njiru, 4 Furuo port Penjiru, 3- or 4-menu Tokishipenjiru, 4-main Tokishifue - Ruechiru, t one or 2-
• OMPI 0 Naphthylmethyl, 2—, 3— and 4—12-tropendyl, 3-—tropenec, pendil, 2—, 3—, or 4—Fenib mouth building, 2—, 3 1- or 4-methipenedil, 3, 4, 5— Trimethoxydienyl, ⁇ -methylphenethyl, etc.
• the alkoxy group represented by R 4 is, for example, an alkoxy group having about 14 carbon atoms (eg, methoxy, ethoxy, propyl 13 oxy, isopropoxy).
• N-a- ⁇ -aminoacyl group represented by the formula (B) include IT-acetyl-U-methy-glyci, N-penzoily If-methyl-glycyl, N— (4-chloro- ⁇ Penzoi) 1-Methyl-log U-N, N "-Acetyl 2-methyl-arani, Z-acetyl-Z-benzyl-arani, Z-acetyl-1-methyl- ⁇ , , -isobutylyl-l-methyl-arranil, Z-" Isono Reli ⁇ —Metara
• V, r IPO LU, IT-Broby-2 ⁇ -Methyl-Aral, ⁇ -Acetyl- ⁇ -Methyl-Fue ⁇ Rualae, 2-(P-Acetyl- 1-Met) Amino-1-3-Methoxy-carbol-Bropiool, 2-( ⁇ -Acetyl- ⁇ -methyl) amino-3, -methylmeth butylpropionate, 2- ( ⁇ -acetyl-1 ⁇ -meth) amino-3 3-ethymecaptoblobby, ⁇ -acetyl- ⁇ -meth-isoleucine, S-acetyl- —-methyl N-methyl-N-acetyl-N-methyl-N-methyl-N-methyl-N-methyl-N-methyl-4'-acetyl-N-methyl- 4'-acetoxytyl N-methyl 1-Noryl, N-acetyl-N-methylenildarishi, N-acetyl-N-methyl-31-
• examples of the acyl group represented by X include an acyl group derived from the same carboxylic acid as R described above.
• R 5 represents an alkyl group or an aralkyl group which may have a substituent, and an sulfonic group derived from an organic sulfone represented by the formula: and C 1 N R6 R7 (D)
• R 6 and R 7 are the same or different and each may have a hydrogen atom substituent, and may have an alkyl go, a chloroalkyl group, an aralkyl group or an aryl group.
• Examples of the alkyl group represented by ⁇ R5 include an acyl group derived from rubamine sulphide.
• the alkyl group represented by ⁇ R5 has a divalent number of about 1 to 4 (eg, methyl, ethyl, propyl, isoprol, butyl, isoptyl, sec-butyl, tert-butyl).
• a butyl group) or an aralkyl group having about F-9 carbon atoms eg, pendyl, phenethyl, a-methylpentyl:
• the aralkyl group as described above may have a substituent.
• substituents include an alkyl group having 14 to 14 carbon atoms (eg, methyl, ethyl, brobiyl, i, nobrovir, butyi, isobutyl, sec monobutyl, tert-butyl group ⁇ Ci-4 alkoxy group (eg, methoxy, ethoxy S, propyloxy, isopropoxy, butoxy group).
• octyl group amino group, mono- or 7-C i-4 amino group (eg, methylamino, ethylamino, dimethylamino, getylamino group), mono- or di-Ci-4alkanoylamino group (eg, homoylamino, acetylamino, probiolamino, butylamino) Halogenated mono- or di-C i_ 4 alkanoamino groups (eg, trifluoroacetylamino, k-lowacetylamino, dichloroacetylamino) ), Halogen (e.g., fluorine, chlorine, bromine. Iodine), a halogenated alkyl group (eg, Torifuruoromechi group) are exemplified force S like.
• alkyl group represented by the above or R 7 examples include carbon
• V / IPO Alkyl groups having the number of 16 are also mentioned.
• cycloalkyl groups include cyclobutavailyl and cyclobutyl having 31 to 16 carbon atoms.
• Cyclopentyl and cyclohexyl groups, aralkyl groups include pendyl groups and phenethyl groups, and aryl groups also include phenyl groups and / 3-naphthyl groups.
• the alkyl group, cycloalkyl group, aralkyl group and aryl group as R 6 or R 7 may have a substituent, and the substituent may be a substituent of the aralkyl group as R 5.
• Examples of the group include the same groups as those exemplified.
• R6, R 7, if conveniently a group used in R 6 R 7 IiC0- form concrete be illustrated by the, N- methylcarbamate Moi Le - Isoburobiru force / 1 bar moil, N- Petit carbamoyl, N —Hexylcarpamoyl, N "—Cyclohexyl carbamoyl / u, N—Penzirkazomoyl, N—Hue R, Lupamoyl, N—2-Methoxy tylcarbamoy, N—p—Clot feninolecarno Moy ⁇ N-dimethyl carbamoyl, N, 2f-dimethylcarbamoyl, etc.
• examples of the alkyl group represented by X include an alkyl group having 18 to 18 carbon atoms (eg, methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, benzyl, isopentyl) , Hexyl, heptyl and octyl groups).
• substituents represented by X may have a substituent.
• examples of the substituent include a halogen atom (eg, nitrogen, bromine, iodine), a carboxyl group, and an alkoxy group having 2 to 5 carbon atoms.
• low (C: L- 4 ) alkoxycarboninole, cyano group) which may have low value (Ci-4) 1-alkylidene (eg, methylene / ethylidene, propylidene) / phenyl group, a--i ⁇ -naphthyl group .bi- group, ethynyl group, ⁇ chloroalkyl group having 3 to 6 carbon atoms (eg, ⁇ clopropyl, ⁇ butyl, ⁇ clopenty, cyclohexyl group)
• each of the above-mentioned cyclic group, vinyl group and ethynyl group may further have a substituent. Examples of such a substituent include a Ci 4 alkyl group (eg, methyl, ethyl, propyl, isobrovir petit, isobutyl).
• C g-5 Alkoxyloxyl group eg, methoxycarbonyl, ethoxycarbonyl
• Xybrobol isopropoxycarbol, butoxycarbonyl, isopoxycarbol, sec-butoxycarbo , Tert-butoxycarbol group
• halogen atom eg, chlorine, fluorine, bromine, iodine
• -toro group cyano group, trimethyl group, amino group, monoamino, mono-alkyl Mino group (eg, methylamino, ethylamino, propylamino, isobromoylamino, butylamino, isobutylamino group), g-ci-alkylamino group (eg, dimethylamino, getylamino, dibuviramino, dibutylamino group), Ci-4alkyl (Eg, methylthioethyl
• Ci-14 alkanoylamino group eg, formamino, acetylamino, brobi ⁇ lamino, petitamino, isobutyramino group
• sulfo group spamoy group (eg, sulfamo) Yl, ⁇ -methysphamoyl, ⁇ , If-dimethylsulfamoyl group) .
• sulfonylamino group inverse, methanesulfo-amino, penzenshonylamino, ⁇ -toensulfonylamino
• C2-4 amino group eg. Acetyl, brobiol. Petit !; le, isobutyryl group
• penziloki ⁇ group benzylthio group, benzyl / Oxy, tert-butoxycarboxy-, pendamino, etc.
• Representative examples of the compound (I) of the present invention include, for example, 4,5-derivative xymaytansinol, 19-dechloro-4,5—derivative quintantanol, 20-demethoxy20- Hydroxy-4,5-dexamexycintan, 4,5-dexyansamitocin P—3 (4,5-dexameytansinol 3-isobutylate), 4,5-dexamethancin, 4,5 -Derivatives ⁇ Maytansinol 3-Phenyl acetate ⁇ 4,5-Dessitive mayitansinol 3-Crotonate, 4,5-Deserts ⁇ Maytansinol 3-Cyclobutanecarboxylate, 4,5-Dessime ximaytan Sinol 3-phenoxyacetate, 4,5-Deoxymethanthine 3-N-mandelate, 4,5-Doxymethanthanol 3-N-aminoamino-acetate,
• the 4,5-deoxymaytansinoide compound I) of the present invention can be produced, for example, by the method shown below.
• ⁇ is as defined above, X 1 is a hydrogen atom, an alkyl or benzyl group having 118 carbon atoms, and R 5 is a hydrogen atom, an akanol group or a 2- (2 ⁇ -alkynyl group) - ⁇ -methyl) shows the amino brobionyl group]] by deoxygenation of the compound represented by the formula
• R 6 represents a carboxylic acid-derived acyl group] by reacting with carboxylic acid or a reactive derivative thereof.
• each group defined for X 1 and: X 2 corresponds to the above group for X, and each group defined for R 5 and R 6 is
• the 9-position water-sulfur group in the starting compound may be replaced by an appropriate protecting group (eg, Ci-4 aki, tri-Ci-14 acrylsilyl, 2-tetrahydroviral) as necessary. Base) may be protected.
• these protecting groups are formed in an aqueous medium (eg, aqueous methanol, aqueous ethanol, aqueous tetrahydrofuran, aqueous acetate, aqueous vinegar) or an acid (eg, inorganic acid such as sulfuric acid, phosphoric acid, phosphoric acid, etc.). It can be easily removed by treating with acid, trichlorosulfuric acid, methanesulphonic acid, P-toluenesulfonic acid.
• acid eg, inorganic acid such as sulfuric acid, phosphoric acid, phosphoric acid, etc.
• the deoxygenation reaction in the above method (1) is performed, for example, in the presence of a metal or a halogenated low valent metal.
• a metal or a halogenated low valent metal As the metal to be used, titanium or a zinc-copper composite is preferable, and as the halogenated low-valent metal, chromium chromium (eg, chromium oxa), lanthanum halide (Eg, samarium dibromide, ytterbium dibromide), low valence /, tungsten genogen (eg, tungsten hexabutyl lithium Z), low valent titanium halide (eg, titanium trichloride z lithium aluminum hydride) ), Low-valent iron halide (eg, ferric zirconium Z-butyllithium) and the like are preferred.
• the amount used is 1 mole equivalent of the starting compound (1).
• the molar amount is about 100 times, preferably about 5 to 50 times.
• a solvent is, for example, an ether (eg, geetite, tetrahydrofuran, etc.), which is used for power S. Tetrahydrofuran or U better.
• the reaction can be usually carried out at a temperature of about -70 to +150, preferably about -40 to +80.
• alcohols eg, methanol, ethanol
• the solvent eg, acetic acid Extraction with chill, black mouth
• acylation of the kick compound method (2) (lb) and compounds in the method (3) (Id) are known per se Meitanshino acids and 2 0 - Dementieva butoxy one 2 0 - of hydroxycarboxylic maytansinoids Shino I earths
• (lb) or (Id) is reacted with a carboxylic acid (summer) in the presence of, for example, carbodiimides (eg, dicyclohexylcarbimide), (1) or () 3 ⁇ 4: Reactive derivative of (I) (eg, acid anhydride) or reactive derivative of the acid in the pond (eg, sulfonic acid, lipamic acid, or isocyanate)
• JP 5 5 is carried out by reacting with - 66 586 JP ( ⁇ main Li force Patent application No. 92,954 GoAkira ⁇ )
• l Contact Ru c in Ashiru reaction of the easily substituent (eg under the influence of the reaction in the carboxylic acid (I) and other acid derivatives, an amino group, a hydroxyl group) is exist
• a suitable protecting group eg, benzyloxycarbonyl, tert-butyloxycarbonyl, etc. as an amino-protecting group, and penzyloxycarbyl, acetyl
• the target compound (Ic) or (Ie) can be obtained by carrying out a reaction with protection with trifluoroacetic acid and the like, followed by usual means for removing a protecting group.
• the hydroxyl group at the 20-position may also be acylated to give (I c) where X is an acyl group.
• X is subjected to an alkali hydrolysis reaction of a compound of an acyl group to selectively remove the a group at position 20 to obtain (I c) where X is a hydrogen atom.
• the hydrolysis reaction is carried out in a hydrated solvent (eg, hydrated methanol, hydrated ethanol, hydrated tetrahydrofuran) or in a mixed solution of a hydrated solvent and an organic solvent (eg, diethyl ether, dichloromethane, chloromethane, benzene, toluene).
• alkali metal carbonate eg, potassium carbonate, sodium carbonate
• the alkylation of the compound (Id) in the method (3) is carried out by alkylating the group at the 20-position of 20-demethoxy-20-hydroxymaytannoides known per se [Japanese Patent Application No. Compound (.Id) and a) diazoalkanes (eg, diazomethane, ⁇ -diazotoluene) according to the specification of No. 7 814 (American Patent Application No. 1711, 459).
• diazoalkanes eg, diazomethane, ⁇ -diazotoluene
• Trialkyloxo-dimethyl salt eg, trimethyoxo-dimethylfluoroborate, triethyloxodifluorofluoroborate
• Halogenide eg, petrobromide, odor ⁇ : pen Jil, aryl chloride, propargyi embodied, 1-bromoaceton, fl-promoacetophenone, ethylpromoacetate, 4-chloroacetate, sulphine ethyl ester, mochiacetaldehyde pectinoreaceter, d)
• Sulfates eg, dimethyl sulfate, carbitol p-toluenesulfonic acid ester
• Isoureas eg, 0-methyl-
• Dicyclohexylisourea Dicyclohexylisourea
• 4-ammonium salts eg, 1-phenylpyridyl-dimethyl p-toluenesphonate, g
• acetylenes eg, acetylenedicarbone warm ethyl ester, cyanoacetylene
• OMPI OMPI? Be done.
• base used include alkali metal hydroxides (eg, sodium hydroxide), tertiary amines (eg, triethylamine, viridin).
• the reaction is a two-phase system consisting of an alkaline aqueous layer and an organic layer, and is carried out in the presence of a so-called interlayer transfer catalyst (eg, tetraethylammonium bromide, cetrimethylammonium bromide). In some cases.
• interlayer transfer catalyst eg, tetraethylammonium bromide, cetrimethylammonium bromide.
• interlayer transfer catalyst eg, tetraethylammonium bromide, cetrimethylammonium bromide.
• a suitable oxidizing agent eg, hydrogen peroxide, permethacro-benzoic acid
• alkyl group is a group containing a thiol group
• this is reduced by a method known per se (eg, sub-complex powder and calcium chloride: 1)
• a compound having a group containing an amino group can be produced, and the amino group of the amino group-containing alkyl group thus obtained can be converted to an amino group.
• the 4,5 -deoxymaytansino compounds (la), (Ic) and (Ie) produced by each of the above methods can be prepared by conventional means such as concentration, solvent extraction and chromatography from the reaction mixture. It can be isolated and collected using recrystallization, etc. as appropriate.
• the target compound is produced as a mixture of isomers (eg, D-isomer, L-isomer)
• a separation means known per se to eliminate
• OMPI W I? 0 For example, by silica gel column chromatography], it can be separated into different predecessors.
• the 4,5-deximeditan 3 / noid ⁇ (I :) of the present invention includes these various isomers and mixtures thereof.
• (Ic) has relatively low potent anti-mitotic activity and relatively low antitumor activity, malignant tumors (eg, leukemia (P-388, mouse), melanoma (B-, 6, mouse) ))
• malignant tumors eg, leukemia (P-388, mouse), melanoma (B-, 6, mouse)
• P-388, mouse leukemia
• melanoma B-, 6, mouse
• Compound (I) is usually orally or parenterally administered safely as a suitable pharmaceutical composition (eg, injection) using a carrier, diluent or the like known per se.
• the administration route may be appropriately selected from, for example, subcutaneous, intraperitoneal, intravenous, intramuscular injection, and the like, and the dose is, for example, intravenous injection for melanoma. If 1 west ton]? About 1 1 1 100 ig kg weight preferably
• Injectable solutions are prepared in a conventional manner, for example, by dissolving about 3 rag of compound (I) in about 0-5 of alcohol (eg, ethanol), and adding physiological saline to make the total volume 10. May be prepared. In the case of a small dose, this solution can be prepared by further diluting with a physiological diet: g water.
• alcohol eg, ethanol
• the compound (I :) of the present invention is also useful in showing antibacterial properties, for example, antifungal and antiprotozoal properties.
• antibacterial properties for example, antifungal and antiprotozoal properties.
• bacterial ecology for example, in the presence of dirt, activated mud or powdered powder. It can be used advantageously in testing.
• Bacterial ecology can be selectively developed without growing sap or protozoa. Specifically, a test sample is added to a liquid or solid medium, and about 10 to 100 ⁇ of 0.1% aqueous solution containing 1% methanol is added to each medium, followed by culturing. I do.
• compound (I) can inhibit the growth of pathogenic microorganisms such as rice sclerotinia rot, rice scab leaf blight, and rice sheath blight in 0.02 mg aqueous solution of ZZW.
• pathogenic microorganisms such as rice sclerotinia rot, rice scab leaf blight, and rice sheath blight.
• the solution in which (I) is dissolved can be sprayed on rice and used for treating those plant diseases.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Veterinary Medicine (AREA)
• Medicinal Chemistry (AREA)
• Public Health (AREA)
• General Chemical & Material Sciences (AREA)
• Pharmacology & Pharmacy (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Tropical Medicine & Parasitology (AREA)
• Communicable Diseases (AREA)
• Oncology (AREA)
• Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=13706099

Family Applications (1)

Country Status (5)

Families Citing this family (437)

Family Cites Families (5)

• 1980
  • 1980-10-08 WO PCT/JP1980/000240 patent/WO1982001188A1/ja not_active Ceased
• 1981
  • 1981-09-29 US US06/306,776 patent/US4371533A/en not_active Expired - Fee Related
  • 1981-09-30 JP JP56156363A patent/JPS5798286A/ja active Granted
  • 1981-10-02 CA CA000387161A patent/CA1160629A/en not_active Expired
  • 1981-10-07 EP EP81108030A patent/EP0049528A1/en not_active Withdrawn

Non-Patent Citations (3)

Also Published As

Similar Documents

Legal Events