Patent ID: 7312327

Claim:
A process for the preparation of a compound of formula (I): wherein: one of the groups A and B represents a -(CH 2 )- radical and the other of the groups A and B represents either a -CH(R′)-CH 2 - radical or a -CH(R″)- radical; in which each of R′ and R″ is selected from the group consisting of a saturated or unsaturated aliphatic radical comprising from 1 to 12 carbon atoms; a -(CH 2 ) n -O-R 1 ′ radical in which n represents an integer between 0 and 4 and R 1 ′ represents a hydrogen atom or a saturated or unsaturated aliphatic radical comprising from 1 to 8 carbon atoms; a -(CH 2 ) n -C(=O)-O-R 1 ′ radical in which n and R 1 ′ are as defined above; and a -(CH 2 ) n -R 2 ′ radical in which n is as defined above and in which R 2 ′ represents an unsubstituted phenyl radical or a phenyl radical substituted by one or more radicals selected from amino, nitro, chloro, bromo, iodo, methoxy and hydroxyl; and the group D represents a -(CH 2 ) m - radical in which m is equal to 0 or to 1; comprising the following successive reaction stages: a stage (a) during which the compound of formula (II): wherein the group D is as defined above, reacts with a compound of formula (III): wherein R and R1, which are identical or different, represent, independently of one another, a hydrogen atom or a radical selected from the group consisting of methyl, ethyl, linear propyl, branched propyl, linear butyl and branched butyl to form a compound of formula (IV): wherein D, R and R1 are as defined above; a stage (b) during which the compound of formula (IV) obtained in stage (a) reacts with the compound of formula (V): wherein A and B are as defined above and X represents a radical selected from bromo, iodo, chloro and tosylate, to form the compound of formula (VI): wherein A, B, D, R and R1 are as defined above; and a stage (c) during which the compound of formula (VI) obtained in stage (b) is subjected to an acid treatment, to form said compound of formula (I).