Patent ID: 7321046
Filing Date: 2008-01-22
Classification: C07B,C07C,C07D,C07F,Y02P

Abstract:
1. A compound of the following structure or its enantiomer wherein R 1 is H, an alkyl group, an aryl group, an alkenyl group, an alkynyl group, or a halogen atom; R R R R R R wherein R 23a is H, a protecting group, an alkyl group, a benzyl group, a trityl group, —SiR a R b R c , CH 2 OR d , or COR e , R 23b is H, a protecting group, an alkyl group, a benzyl group, a trityl group, —SiR a R b R c , CH 2 OR d , or COR e , or R 23a and R 23b together form a portion of six-membered acetal ring incorporating CR t R u ; R R