Patent ID: 6642244
Filing Date: 2003-11-04
Classification: A61P,C07D

Abstract:
A compound of the formula (I) or a pharmaceutically-acceptable salt thereof: wherein:R1 is hydrogen, alkyl or substituted alkyl; R2 is hydrogen, halogen, â€”OR5 or â€”NR5R6; R3 at each occurrence is selected from hydrogen, halogen, alkyl, substituted alkyl and â€”OR7; R4 is hydrogen, alkyl, substituted alkyl, aryl, heteroaryl or heterocyclo, provided, however, that R4 is not hydrogen when Y is â€”SO2â€”; R5, R6 and R7 are independently selected from hydrogen, alkyl and substituted alkyl; Y is â€”SO2â€” or â€”(C&boxH;O)â€” provided, however, that Y is not â€”SO2â€” when R4 is hydrogen; and n is 4.