Hydroxycarboxylic acid derivatives

摘要

Hydroxycarboxylic acid derivatives represented by the general formula (V);
wherein: R 1 represents a substituted C 1 -C 12 alkyl group; a substituted C 2 -C 6 alkenyl group; a substituted amino group; a substituted C 1 -C 6 alkoxy group; a substituted C 1 -C 6 alkylthio group; a substituted carbamoyl group; a substituted sulfonamide group; or a substituted amide group; R 2 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aromatic hydrocarbon group or a substituted or unsubstituted heterocyclic group; the ring A represents a saturated cyclic alkyl group with 5 to 7 carbon atoms; The hydroxycarboxylic acid derivatives of formula (V) are useful for the synthesis of cyclic amide derivatives useful as cathepsin K inhibitors.