Patent ID: 6723729
Filing Date: 2004-04-20
Classification: A61P,C07D

Abstract:
A compound having the formula or a pharmaceutically acceptable salt thereof, where R1 is hydrogen, an alkyl, aralkyl, hydroxymethyl, carboxymethyl acyloxymethyl or trialkylsilyl group, or a group â€”CH2NR3R4 where N is a linking nitrogen atom and where (a) R3 and R4 are independently selected from hydrogen and alkyl, alkenyl, hydroxyalkyl and alkoxyalkyl groups; (b) R3 is hydrogen or an alkyl, alkenyl, hydroxyalkyl or alkoxyalkyl group, and R4 is â€”COR5 where R5 is hydrogen or an alkyl, alkenyl, hydroxyalkyl or alkoxyalkyl group; or (c) R3 and R4 taken together with the linking nitrogen atom form a saturated 3- to 7-member heterocyclic group.