Patent ID: 6340702
Filing Date: 2002-01-22
Classification: C07D

Abstract:
A compound of formula (1): wherein:R1 represents an alkyl group having from 1 to 4 carbon atoms; R2 and R3 are the same as or different from each other and each represents a hydrogen atom or an aliphatic acyl group having from 2 to 25 carbon atoms; X represents a halogen atom or an alkoxy group having from 1 to 4 carbon atoms; Y represents a group of formula RbRcNâ€” or RbRcNâ€”Oâ€”, where Rb and Rc are the same as or different from each other and each represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms; and Z represents an oxygen atom or a sulfur atom; or a pharmaceutically acceptable salt or ester thereof.