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  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
  • C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
  • C07D317/72—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 spiro-condensed with carbocyclic rings
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  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C255/00—Carboxylic acid nitriles
  • C07C255/01—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms
  • C07C255/32—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring
  • C07C255/40—Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring the carbon skeleton being further substituted by doubly-bound oxygen atoms
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  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
  • C07C45/45—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by condensation
  • C07C45/46—Friedel-Crafts reactions
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  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
  • C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
  • C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
  • C07C45/59—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in five-membered rings
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
  • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
  • C07C45/62—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by hydrogenation of carbon-to-carbon double or triple bonds
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
  • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
  • C07C45/63—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by introduction of halogen; by substitution of halogen atoms by other halogen atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
  • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
  • C07C45/64—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by introduction of functional groups containing oxygen only in singly bound form
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
  • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
  • C07C49/687—Unsaturated compounds containing a keto groups being part of a ring containing halogen
  • C07C49/697—Unsaturated compounds containing a keto groups being part of a ring containing halogen containing six-membered aromatic rings
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
  • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
  • C07C49/703—Unsaturated compounds containing a keto groups being part of a ring containing hydroxy groups
  • C07C49/747—Unsaturated compounds containing a keto groups being part of a ring containing hydroxy groups containing six-membered aromatic rings
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
  • C07C49/76—Ketones containing a keto group bound to a six-membered aromatic ring
  • C07C49/782—Ketones containing a keto group bound to a six-membered aromatic ring polycyclic
  • C07C49/792—Ketones containing a keto group bound to a six-membered aromatic ring polycyclic containing rings other than six-membered aromatic rings
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
  • C07C49/76—Ketones containing a keto group bound to a six-membered aromatic ring
  • C07C49/794—Ketones containing a keto group bound to a six-membered aromatic ring having unsaturation outside an aromatic ring
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
  • C07C59/40—Unsaturated compounds
  • C07C59/76—Unsaturated compounds containing keto groups
  • C07C59/86—Unsaturated compounds containing keto groups containing six-membered aromatic rings and other rings

Definitions

• the subject of the present invention is 1 '(ethylene-3,3-dioxo-cyclohexyl) -4 acetophenone and derivatives of this compound as well as processes for their preparation and the use of these compounds as starting material for the preparation of '((oxo-3-cyclohexyl) -4 phenyl] -2 propionic acid and its derivatives.
• Propionic acid [(oxo-3-cyclohexyl) -4 phenyl] -2 and derivatives thereof are known as nonsteroidal anti-inflammatory agents (NSAIDs) which are present, compared to their aryl-2 type counterparts -propionic, the advantage of having greater activity and less toxicity.
• NSAIDs nonsteroidal anti-inflammatory agents
• the object of the invention is to eliminate these drawbacks and to allow the [(oxo-3-cyclohexyl) -4 phenyl] -2 propionic acid and derivatives thereof to be obtained efficiently and quickly with a high efficiency.
• R 1 , R 2 , R 3 , R 4 , R 5 which may be the same or different each represent hydrogen or an alkyl group, is characterized in that a compound of formula is transformed
• the compounds of formula (IV) are transformed into compounds of formula (I), by forming successive intermediate compounds of formula
• X represents OH or Cl
• the meanings of Y and X for each formula being as indicated in the following table namely, a first nterm area compound (IX) or (XII), in which X represents OH, obtained by reduction of the ketone function of the group A 1 , and a second intermediate compound (X) or (XIII), in which X represents Cl, obtained by substitution of the OH group of the first intermediate compound with chlorine by transforming, then, if necessary, the compound (XIII) into compound (X) by acetalization of the ketone function Y, then by transforming the compound (X) intermediate in a compound of formula (I) by a Grignard reaction according to which the organomagnesium derivative of compound (X) is reacted with carbon dioxide and the adduct thus formed is hydrolyzed, further carrying out , deacetalization of group B, so as to obtain the final product (I).
• the compounds of formula (IV) are transformed into compounds of formula (I) by forming an intermediate compound of formula
• R 1 , R 2 , R 3 , R 4 and R 5 are as defined in claim 1, this intermediate compound being obtained by reaction of compound (IV) with chloroform and an alkali metal hydroxide, in the presence of a catalytic amount of benzyltriethylamine chloride, then deacetalization of group B of the compound (IV) by hydrolysis in an acidic aqueous medium, and by subjecting the intermediate compound (XV) thus obtained to hydrogenolysis so as to form the product (I).
• the compounds of formula (IV) are transformed into compounds of formula (I), by first reacting the compound (IV) with cyanotrimethylsilane, in the presence of 'a catalytic amount of zinc iodide, then subjecting the product of this reaction to hydrolysis in an acidic aqueous medium, so as to cause deacetalization of group B, the whole so as to form an intermediate compound of the cyanohydrin type of formula
• R 1 , R 2 , R 3 , R 4 and R 5 are as defined in claim 1, and by subjecting the intermediate compound (XVI) thus obtained to hydrolysis and hydrogenolysis so as to form the final product (I) .
• This process therefore involves the use of compounds having the aforementioned general formula (IV), that is to say 3'-ethylenedioxo-3,3 cyclohexyl) acetophenone and derivatives thereof, as starting material for 1a preparation of [(3-oxo-cyclohexyl) -4 phenyl] -2 propionic acid and its derivatives.
• the compounds of formula (IV) are new compounds useful as starting materials for the preparation of the compounds of formula (I), by the above-mentioned process and they can, of course, also be useful for other purposes.
• a first process for preparing the compounds of formula (IV), in accordance with the invention is characterized in that:
• a second process for the preparation, according to the invention, of the compounds of formula (IV), applicable in the particular case where, in this formula, R 5 represents hydrogen, is characterized in that:
• R 4 have the meaning given in claim 1, so as to obtain a compound of formula
• the compound of formula can be transformed
• a third process for the preparation, according to the invention, of the compounds of formula (IV), also applicable in the particular case where R 5 represents hydrogen, is characterized in that:
• Fig. 1 illustrates the processes for preparing the compounds of formula (IV);
• Fig. 2 illustrates the preparation of the compounds of formula (I) from the compounds of formula (IV);
• Fig. 3 is another form of schematic representation of the reaction sequences of FIG. 1, intended to highlight in particular the stereochemical characteristics of the various compounds.
• Fig. 4 is a form of schematic representation, similar to that of FIG. 3, sequences of reactions of FIG. 2.
• the starting product of formula (V), namely 1a p-bromoacetophenone dioxolane, is a known compound, easily prepared, for example from 1a p-bromoacetophenone, as described in an article published by AK Zarkadis et al. (Chem. Berichte 188, 1183 (1985)).
• the compounds of formula (III) ((oxo-3-cyclohexyl) -4 acetophenone dioxolane and its derivatives substituted by one or more alkyl groups on the cyclohexyl group) can be formed in a single step, with a high yield, by reaction of Grignard between 1a p-bromoacetophenone dioxolane and 1a cyclohexen-2-one or its derivatives substituted by alkyl groups, i.e. the compounds of formula (VIa).
• This Grignard reaction comprises the addition of the organomagnesium to the unsaturated ketone, according to the Michael reaction, catalyzed for example by Cu Cl or Cu (OAc) 2 (Step 1).
• the compounds of formula (III) can also be formed, with excellent yield, by catalytic hydrogenation of the compounds of formula (II) under conditions allowing the selective hydrogenation of the double bond of the cyclohexene group without reduction of the carbonyl function.
• catalytic hydrogenation in an EtOH / NaOH medium using palladium on carbon (Pd / C) as catalyst (Step 3).
• the compounds of formula (II) can be formed, in very good yield, by Grignard reaction, between 1a p-bromoacetophenone dioxolane (V) and ethoxy-3-cyclohexen-2 one or its substituted alkyl derivatives, c. to.d. the compounds of formula (VI) (Step 2).
• the compounds (V) and (VI) can be condensed in any suitable solvent, such as ether or tetrahydrofuran (THF).
• THF tetrahydrofuran
• a deacetalization of the group A 2 is carried out first (ie deprotection of the ketone function of this group) to form the compounds (VII) from the compounds (III) (Step 5 ), then an acetalization of the ketone function of the cyclohexanone, i.e. a regioselective protection reaction of this function, to form the compounds
• Step 7 a deacetalization of the group A 2 is carried out .
• the preparation of [(oxo-3-cyclohexyl) -4 phenyl] -2 propionic acid and its derivatives, of general formula (I), from the compounds of formula (IV), according to the invention, comprises 1a successive formation of three intermediate compounds (IX), (X) and (XI) or else (XII), (XIII) and (XIV), as illustrated in Figs 2 and 4.
• the derivatives (IX) or (XII) are first formed in which the function X of the group A 3 is an alcohol function, by reduction of the ketone function of the group
• the derivatives (X) or (XIII) are then formed, in which the X function of group A 3 is an alkyl chloride function, by chlorination of the corresponding alcohol (IX) or (XII), for example by treatment of the latter by thionyl chloride.
• the chloro function of the compounds (X) or (XIII) is replaced by the cyano function so as to form the corresponding nitrile type derivatives (XI) or (XIV).
• an alkaline cyanide such as Na CN
• a suitable solvent such as dimethylformamide (DMF).
• the cyano group of the compounds (XI) or (XIV) is hydrolyzed, so as to form the acid function of the group A 4 of the final product (I).
• the hydrolysis is advantageously carried out in a basic medium.
• the Grignard reagent obtained from 17 g (70 mmol) of 1a p-bromoacetophenone dioxolane and 1.9 g of Mg (78, 19 mmol) in 80 ml of THF is cooled to -20 ° C. Then 0.6 g of CuCl and a solution of 6.2 g (64 mmol) of cyclohexen-2-one in 20 ml of THF are added thereto. It is left to react at -20 ° C for 30 min. , then 1 hour. at room temperature. After hydrolysis with a saturated solution of ammonium chloride (100 ml) and the usual treatments, 12.5 g of product (III) are obtained.
• the acetal function of the compound (IX) is deprotected from the ketone function of the compound (XII) in acetone in the presence of a catalytic amount of hydrochloric acid.
• the product (XIII) is obtained quantitatively from the compound (X) under standard deprotection conditions.
• acetal (XI) to ketone (XIV) is carried out in acetone in the presence of a catalytic amount of hydrochloric acid.
• the Grignard reagent obtained from 5 g (17.8 mmol) of compound (X) and 0.55 g (22.9 mmol) of Mg in THF (or Et 2 O) is cooled to 10 ° C. and a current of CO 2 is passed through the reaction medium, "while maintaining the temperature between 5 and 10 ° C. (2 hours). After the treatments specific to the Grignard reactions, 2.7 g of product are obtained (I ).

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
• Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)

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• 1988
  • 1988-03-21 CH CH1045/88A patent/CH676001A5/fr not_active IP Right Cessation
• 1989
  • 1989-02-21 FR FR898902230A patent/FR2628742B1/fr not_active Expired - Lifetime
  • 1989-02-24 JP JP1502083A patent/JPH03502096A/ja active Pending
  • 1989-02-24 DE DE8989902223T patent/DE68902971D1/de not_active Expired - Lifetime
  • 1989-02-24 AU AU30469/89A patent/AU3046989A/en not_active Abandoned
  • 1989-02-24 EP EP19890902223 patent/EP0362309B1/fr not_active Expired - Lifetime
  • 1989-02-24 WO PCT/CH1989/000036 patent/WO1989009215A1/fr not_active Ceased
  • 1989-02-24 AT AT89902223T patent/ATE80882T1/de active
  • 1989-11-20 US US07/455,377 patent/US5104995A/en not_active Expired - Fee Related

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