EP0738257A1 - New method for n-cyclopropylation of aromatic amines, as well as compounds and compositions obtained - Google Patents
New method for n-cyclopropylation of aromatic amines, as well as compounds and compositions obtainedInfo
- Publication number
- EP0738257A1 EP0738257A1 EP94921773A EP94921773A EP0738257A1 EP 0738257 A1 EP0738257 A1 EP 0738257A1 EP 94921773 A EP94921773 A EP 94921773A EP 94921773 A EP94921773 A EP 94921773A EP 0738257 A1 EP0738257 A1 EP 0738257A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- group
- optionally
- quinoline
- carboxylic acid
- cyclopropyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D215/48—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen
- C07D215/54—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3
- C07D215/56—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen attached in position 3 with oxygen atoms in position 4
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
- C07C227/04—Formation of amino groups in compounds containing carboxyl groups
- C07C227/06—Formation of amino groups in compounds containing carboxyl groups by addition or substitution reactions, without increasing the number of carbon atoms in the carbon skeleton of the acid
- C07C227/08—Formation of amino groups in compounds containing carboxyl groups by addition or substitution reactions, without increasing the number of carbon atoms in the carbon skeleton of the acid by reaction of ammonia or amines with acids containing functional groups
Definitions
- the present invention consists in a new method for the N-cyclo- propylation of primary and secondary aromatic amines.
- the met ⁇ hod can be used for the synthesis of several molecules. It is well adaptable in the synthesis of N-cyclopropyl-substituted quinolones and naftiridines, where the method is applicable as the last step of synthesis or previously in the course of the synthesis, before or after ring-closure of the ring carrying the nitrogen atom to be N-cyclopropylated, before or after in ⁇ troduction of other substituents of the molecule.
- R is an ester-forming group such as an C alkyl or a
- - R stands for hydrogen , C alkyl, benzyl-oxy-
- X is halogen preferably bromine -
- - X stands for a metal ion, such as alkali, favourably potassiu
- the object of the invention is a process for the introduction of a cyclopropyl group into a primary or se ⁇ condary aromatic amine, by reacting the corresponding amines or their salts so as to form the corresponding N-cyclopropyl- ( 1 '-carboxy)-derivatives of the formula (II) by way of reacting the corresponding amines or their salts a. with the reagent of general formula (I) optionally in the pre ⁇ sence of an acid binding agent or b. with 2,4-dihalogen-butiric acid ester , or c.
- the reagents of preference formula (I) are bromo-cyclopropyl-carboxylic acid, its esters and salts, but other halogen derivatives can also be used.
- the alkali salt e.g. the po ⁇ tassium or sodium salt - of the aromatic amine
- it is not ne ⁇ cessary to use an acid binding agent.
- alkali carbona ⁇ tes and hydroxides as well as amines can be used as acid bin ⁇ ding agents.
- potassium carbonate both as an acid binding agent and also to prepare the potassium salt of the amine to be cyclopropylated.
- Elimination of the l'-carboxyl group can be brought about using any known manner to eliminate carboxyl groups, preferably by way of heat treatment at temperatures between 200 - 250 oC preferably at 220 - 230oC.
- acid hydrolysis can also be used as shown below in some of the Examples.
- a preferred embodiment of the invention is the preparation of the quinolone-3-carboxylic acid derivative of the general for ⁇ mula (III) and its salts by reacting a primary or secondary amine on the course of the synthesis of the molecule before or after ring closure of the quinolone ring with the reagent of formula (I) optionally in the presence of an acid binding agent and subsequently optionally hydrolysing the ester group or groups and optionally eliminating the l'-carboxyl group in ⁇ troduced on the course of the first step from the molecule by termical treatment or hydrolysis and optionally also elimina ⁇ ting the substituent of the piperazine group.
- One important embodiment of the invention is the production of the quinoline-3-carboxylic acid derivative of the formula (III) and its salts by eliminating the 1'- carboxyl group of the ( 1 '-carboxyl )-cyclopropyl-quinoline-3-carboxylic acid deriva ⁇ tive of the formula (IV) or its salts and optionally also eli ⁇ minating the 4-substituent of the piperazine group before, af ⁇ ter or simultaneously.
- the invention comprises the process for the preparation of the quinoline-3-carboxylic acid derivative of the formula (IV) and its salts by carrying out the following steps in an optional sequence on a quinoline-3-carboxylic acid derivative of the general formula (VII) a. ) reaction according to anyof the above methods a..b. or c. e.g. with a reagent of formula (I) optionally in the presence of an acid binding agent, and optionally hydrolysing the ester groups of the (l'- carboxyl)-l-cyclopropyl quinoline-3-carboxylic acid ester deri ⁇ vative thus obtained ,
- the invention also comprises the process for the preparation of the intermediate quinoline-3-carboxylic acid derivative of the formula (IV) - which is one key intermediate of the synthesis - by N-alkylating the quinoline-3-carboxylic acid derivative of the general formula (VII) with 1-bromo-cyclopropane-carboxylic acid or its alkyl ester of formula (I), hydrolysing the quinoline-3-carboxylic acid derivative of the general formula (VIII) and 7-substituting the quinoline-3-carboxylic acid derivative of the formula (V) with piperazine or N-substituted piperazine.
- the compounds of formula (IV) are new and biolo ⁇ gically active.
- bacteriostatic products serve as the- rapeutically valuable active ingredients in pharmaceuticals especially bacteriostatic products.
- Their bacteriostatic activity corresponds to those of cyprofloxacine or enrofloxacine and they might be used when these are not effective e.g. because of resistance against some of the strains involved.
- esters primarily obtained such as the qui- n ⁇ line-3-carboxylic acid derivative of the general formula (VIII) using acidic conditions preferably aqueous sulfuric and/or acetic acid.
- acidic conditions preferably aqueous sulfuric and/or acetic acid.
- other hydrolysis methods might also be used to hydrolyse the esters.
- methanolysis especially when silylesters are present.
- Alkaline hydrolysis is also a preferred method.
- a suitable solvent for the hydrolysis step and for the step to introduce the pipe ⁇ razine- substituent it is preferable to use a suitable solvent. It has been found according to this invention that dimethyl formamide is a prefered solvent for this purpose, having a highly advantageous influence on the reaction and giving pure products. Other solvents like dimethyl sulfoxide can be used.
- Quinoline-3-carboxylic acid derivatives of formula (VIII) and piperazines are preferably reacted in the presence of pyridine. Excess of pyridine and/or piperazine after termination of the reaction may be eliminated by steam distillation.
- quinoline-3-carboxylic acid derivatives of formula (IV) and their salts are new products and are also subject of this invention.
- a further embodiment of the patent are compositions comprising as a biologically active ingredient the new compounds of the general formula (IV) and their salts. Their most important use is based on their bacteriostatic activity combined with their improved solubility as compared with the compounds not compri ⁇ sing the l'-carboxyl group.
- compositions for biological use as pharmaceuticals and veteri ⁇ nary products comprising the compounds of general formula (IV) with pharmaceutically acceptable carriers, auxiliary products, diluents and other additives which are known to be used in pharmaceutical products to facilitate administration for oral, parenteral, transdermal or rectal use of any kind.
- the composi ⁇ tions may be administered when related compounds are not readi ⁇ ly used because of resistance or problems of dissolution in the tissues involved.
- 1,4-dihydro-l-( 1 ' -carboxyl )- cyclopropyl-quinoline-3-carboxylic acid, 6.5 g of piperazine and 18.0 g of pyridine are heated for o 3 hours at about 75 C.
- 100 ml of water are then added and the pH value of the reaction mixture is adjusted to 10 - 11 by ad ⁇ dition of 2N aqueous sodium hydroxide.
- ⁇ nreacted pyridine and piperazine are then eliminated by steam distillation.
- the re ⁇ mainder is filtered and the pH value of the reaction mixture is o adjusted to a value of about 5 - 6 at about 70 C.
- the suspen ⁇ sion obtained is filtered, washed with water and dried.
- the suspension obtained On cooling to 20oC the suspension obtained is filtered. The precipitate is washed twice with acetone and co ⁇ vered with water. On final filtration of the crystals they are dissolved in a solution of 5 g of potassium carbonate and 100 ml of water. The solution is decolorized with carbon black and filtered. The pH value of the filtrate is adjusted to 7.5 by addition of acetic acid and the suspension obtained is cooled, filtered, washed with water and methanol and again filtered.
- Example 6 200 ml of water are added and the pH value is adjusted to 6 by addition of acetic acid, the suspen ⁇ sion is filtered, washed and dried. 13.5 g of l-(1 ' -carboxyl)- cyclopropyl- 4-oxo-l, 4-dihydro-6-fluoro-7- chloro-quinoline-3- carboxylic acid ethyl ester are obtained wich is further trea ⁇ ted as in Example 4. Example 6.
- 2,4-dibromo-butyric acid methyl ester are boiled in 200 ml of toluene until the reaction is complete.
- the suspension obtained is filtered, the solid phase is stirred in water for 1 hour.
- Example 10 Using the process of Example 10 but starting from equimolar amounts of 1, 4-dihydro-4-oxo- 6-fluoro-7-(4 '-carbomethoxy-pipe- razinyl )-quinoline- 3-carboxylic acid ethyl ester or 6-chloro- 7-(4-ethyl-piperazinyl )- 1,4-dihydro-4-oxo-quinoline- 3-carbo- xylic acid ethyl ester the products are l-(1 '-carboxy)- cyclo ⁇ propyl- 1, 4-dihydro-4-oxo- 6-fluoro- 7-piperazinyl -quinoline- 3-carboxylic acid and 1-( 1 '- carboxy)-cyclopropyl-1, 4-dihydro- 4-oxo-6-fluoro-7-(4 '-ethyl-1 '-piperazinyl )-quinoline-3-carboxylic
- Test organism Escherichia coli 14.
- Test medium ISO-Sensitest agar (pH 7.2) o Incubation: 20 hours at 37 C.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Quinoline Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU2000593 | 1993-07-13 | ||
HU9302005A HUT67395A (en) | 1993-07-13 | 1993-07-13 | Method for the n-cyclopropylation of primary and secondary aromatic amines |
PCT/HU1994/000025 WO1995002573A2 (en) | 1993-07-13 | 1994-07-12 | New method for n-cyclopropylation of aromatic amines, as well as compounds and compositions obtained |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0738257A1 true EP0738257A1 (en) | 1996-10-23 |
Family
ID=10983778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94921773A Ceased EP0738257A1 (en) | 1993-07-13 | 1994-07-12 | New method for n-cyclopropylation of aromatic amines, as well as compounds and compositions obtained |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0738257A1 (en) |
KR (1) | KR960704875A (en) |
AU (1) | AU7236494A (en) |
CA (1) | CA2167151A1 (en) |
HU (1) | HUT67395A (en) |
WO (1) | WO1995002573A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113912551B (en) * | 2021-10-09 | 2023-04-18 | 浙江新和成股份有限公司 | Recyclable aromatic amine reagent and preparation and application thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3509546A1 (en) * | 1985-03-16 | 1986-09-25 | Bayer Ag, 5090 Leverkusen | 7-AMINO-1- (SUBST.CYCLOPROPYL) -1,4-DIHYDRO-4-OXO-3-CHINOLINE CARBONIC ACIDS, METHOD FOR THE PRODUCTION THEREOF AND THE ANTIBACTERIAL AGENTS CONTAINING THEM |
US5281596A (en) * | 1986-02-19 | 1994-01-25 | Bayer Aktiengesellschaft | Antibacterial drugs for fish |
DE3808118A1 (en) * | 1988-03-11 | 1989-09-21 | Bayer Ag | METHOD FOR PRODUCING 1-CYCLOPROPYL-QUINOLON CARBONIC ACIDS AND THEIR DERIVATIVES |
DE3808117A1 (en) * | 1988-03-11 | 1989-09-21 | Bayer Ag | N-CYCLOPROPYLANILINE AND THE USE THEREOF IN METHOD FOR THE PRODUCTION OF 1-CYCLOPROPYL-CHINOLONIC CARBONIC ACIDS AND THEIR DERIVATIVES |
FR2655545B1 (en) * | 1989-12-11 | 1994-06-10 | Rhone Poulenc Sante | NEW THERAPEUTIC APPLICATION OF FLUOROQUINOLONE DERIVATIVES. |
-
1993
- 1993-07-13 HU HU9302005A patent/HUT67395A/en unknown
-
1994
- 1994-07-12 WO PCT/HU1994/000025 patent/WO1995002573A2/en not_active Application Discontinuation
- 1994-07-12 EP EP94921773A patent/EP0738257A1/en not_active Ceased
- 1994-07-12 CA CA002167151A patent/CA2167151A1/en not_active Abandoned
- 1994-07-12 KR KR1019960701140A patent/KR960704875A/en active IP Right Grant
- 1994-07-12 AU AU72364/94A patent/AU7236494A/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO9502573A2 * |
Also Published As
Publication number | Publication date |
---|---|
CA2167151A1 (en) | 1995-01-26 |
HUT67395A (en) | 1995-04-28 |
WO1995002573A3 (en) | 1995-03-09 |
KR960704875A (en) | 1996-10-09 |
AU7236494A (en) | 1995-02-13 |
HU9302005D0 (en) | 1993-10-28 |
WO1995002573A2 (en) | 1995-01-26 |
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