Patent ID: 6511965
Filing Date: 2003-01-28
Classification: A61K,A61P,C07F,C07H

Abstract:
A compound of formula (I) wherein:R1 and R3 may be the same or different and each is selected from the group consisting of a C1-C20 alkanoyl group which may optionally be substituted with one or more substituent groups selected from substituent group A, a C3-C20 alkenoyl group which may optionally be substituted with one or more substituent groups selected from substituent group A and a C3-C20 alkynoyl group which may optionally be substituted with one or more substituent groups selected from substituent group A; R2 and R4 may be the same or different and each is selected from the group consisting of a C1-C20 alkyl group which may optionally be substituted with one or more substituent groups selected from substituent group A, a C2-C20 alkenyl group which may optionally be substituted with one or more substituent groups selected from substituent group A and a C2-C20 alkynyl group which may optionally be substituted with one or more substituent groups selected from substituent group A; R5 is selected from the group consisting of a hydrogen atom, a halogen atom, a hydroxy group, a C1-C6 alkoxy group which may optionally be substituted with an oxo group, a C2-C6 alkenyloxy group which may optionally be substituted with an oxo group, and a C2-C6 alkynyloxy group which may optionally be substituted with an oxo group; Substituent group A is a halogen atom, a hydroxy group, an oxo group, a C1-C20 alkoxy group which may optionally be substituted with an oxo group, a C2-C20 alkenyloxy group which may optionally be substituted with an oxo group, a C2-C20 alkynyloxy group which may optionally be substituted with an oxo group, a C1-C20 alkanoyloxy group which may optionally be substituted with an oxo group, a C3-C20 alkenoyloxy which may optionally be substituted with an oxo group or a C3-C20 alkynoyloxy group which may optionally be substituted with an oxo group; or a pharmaceutically acceptable salt or ester thereof.