Patent ID: 6468979
Filing Date: 2002-10-22
Classification: C07H

Abstract:
A compound of formula: whereinR is hydrogen or a linear or branched C1-C4 alkyl group; R1 is hydrogen or a linear or branched C1-C4 alkyl group; Het is a biheterocyclic group of formula â€ƒwherein R2 is a saturated or unsaturated 5- or 6-membered heterocycle containing from 1 to 3 heteroatom(s) selected from the group consisting of nitrogen, oxygen and sulphur, optionally substituted with 1 or 2 substituents selected from the group consisting Of C1-C3 alkyl, hydroxyl, oxo (&boxH;O), nitro, C1-C3 alkoxycarbonyl, aminocarbonyl , mono- or di- C1-C3 alkylaminocarbonyl and C1-C3 alkylcarbonyl; or a pharmaceutically acceptable salt thereof.