| abstract |
The present invention relates to carboxylic acid derivatives of the formula, where the radicals have the meanings stated in the description, to the preparation of these compounds and to their use as drugs. A Α-hydroxyl acid derivative with the following formula where R is carboxyl group or C1-C6 alkoxide carbonyl group, R2 and R3 are C1-C4, alkyl group, or C1-C4 alkoxide group, X is CH, W and Y are N, R4 and R5 are benzyl group, and R6 is methyl, ethyl, alkyl methyl or hetero aromatic group. |