Patent ID: 6214833
Filing Date: 2001-04-10
Classification: A61K,C07D

Abstract:
A compound of formula ##STR25##whereinR.sub.a and R.sub.b are the same or different and are selected from the group consisting of hydrogen, acyl group derived from a lower carboxylic acid or chains of the formula ##STR26##whereinR is a group of formula ##STR27##whereinR.sub.3 is selected from the group consisting of hydrogen, halogen, trifluoromethyl and C.sub.1 -C.sub.3 alkoxy;R.sub.1 and R.sub.2 are the same or different and are selected from the group consisting of hydrogen, phenylalkoxycarbonyl having 1 to 3 carbon atoms in the alkoxy moiety, C.sub.2 -C.sub.6 alkoxycarbonyl and C.sub.2 -C.sub.6 alkylcarbonyl;W is selected from the group consisting of a single bond, an oxygen atom and a group --CH(Alk)--, wherein Alk is a linear or branched C.sub.1 -C.sub.3 alkyl group;r is 0 or 1, wherein when r is 0, n is 1 to 6, and when r is 1, n is 2 to 7; andm is 2 to 7,provided that at least one of R.sub.a and R.sub.b is other than a hydrogen atom or an acyl group derived from a lower carboxylic acid.