Patent ID: 6362218
Filing Date: 2002-03-26
Classification: C07D

Abstract:
A compound of the formula wherein R1 and R1â€² are independently hydrogen or carboxy substituted C1-C5 alkanoyl, Y is H or OH, and Z is OH or â€”S(O)nR wherein n is 0, 1 or 2 and wherein R is C1-C6 alkyl, phenyl, or C1-C6 alkyl or phenyl substituted with one or more groups selected from the group consisting of OH, C1-C4 alkoxy, halo, carboxy, carbo(C1-C4 alkoxy), amino, â€”SO3H, and mono or di (C1-C4 alkyl)amino, provided that when n is 0, R is not a 2-amino-2-carboxy alkyl group or an acylated derivative thereof, and provided that when Y is OH, Z is OH.