Patent ID: 6624187
Filing Date: 2003-09-23
Classification: A61P,C07D

Abstract:
A compound having the formula: wherein:R1, R5, R9, and R10 are independently lower alkyl of 1 to 3 carbon atoms provided that at least three of R1, R5, R9, and R10 are methyl; R2 is â€”OH, â€”OR11, or â€”NHR11, or aryl; R3 and R4 are independently â€”COR11 or taken together are R6 and R7 are independently lower alkyl of 1 to 3 carbon atoms; R8 is O-alkyl of 1 to 12 carbon atoms, S-alkyl of 1 to 12 carbon atoms or O-aryl; R11 is alkyl of 1 to 6 carbon atoms; and R12 is lower alkyl of 1 to 12 carbon atoms, aryl, or aminoalkyl of 1 to 8 carbon atoms, provided that R8, R11, and R12 together contain at least 10 carbon atoms.