Bicyclo (3,2,1) octancarboxylsyrederivater and process for their preparation as well as the compounds' therapeutic use

摘要

1. Claims for the Contracting States BE, CH, DE, FR, GB, IT, LI, LU, NL, SE Bicyclo (3.2.1.) octane-3-carboxylic acid derivatives, having the following general formula : see diagramm : EP0130882,P8,F2 in which : R represents a straight- or branched-chain lower alkyl radical Z represents a group OX in which X is hydrogen or an alkaline metal, or Z may also represent a group see diagramm : EP0130882,P8,F3 in which R1 and R2 , which may be the same or different, are hydrogen or a lower alkyl radical. 1. Claims for the Contracting State : AT Process for preparing Bicyclo (3.2.1.) octane-3-carboxylic acid derivatives, having the following general formula : see diagramm : EP0130882,P8,F4 in which : R represents a straight- or branched-chain lower alkyl radical Z represents a group OX in which X is hydrogen or an alkaline metal, or Z may also represent a group see diagramm : EP0130882,P8,F6 in which R1 and R2 , which may be the same or different, are hydrogen or a lower alkyl radical, comprising converting methyl 8-oxo-bicyclo (3.2.1.) octane-3-carboxylate having the formula : see diagramm : EP0130882,P8,F8 to an acid of the formula see diagramm : EP0130882,P9,F1 reacting the acid of the formula (III) with a strong base to give an intermediate organometallic compound having the formula see diagramm : EP0130882,P9,F2 in which B is an alkaline metal and, by action of an alkyl halide R-X in which R has the aforedisclosed meanings, converting compound (IV) to a compound of the formula (I) in which Z is OH, and preparing according to conventional methods the compounds of the formula (I) in which Z is other than OH.