Patent ID: 6495643
Filing Date: 2002-12-17
Classification: A61K,C07D,C07F,C08F,C08G

Abstract:
A polymer or co-polymer which is derived from at least one monomer of the formulae: wherein:R1 to R4 may be the same or different and are selected from hydrogen, halogen, optionally substituted alkyl, optionally substituted aryl, nitrile, hydroxy, alkoxy, acyloxy and ester; or R1 and R2 or R3 and R4 together form methylene; X is selected from sulfur, sulfoxide, sulfone and disulfide; Y is selected from sulfur, SO2, oxygen, Nâ€”H, N-alkyl, N-aryl, acyl and CR5R6 wherein R5 and R6 are the same as R1 to R4; and Z1 and Z2 are linking functionalities.