Patent ID: 6013814
Filing Date: 2000-01-11
Classification: A61P,C07C,C07D

Abstract:
A compound of formula (I) ##STR10## where R.sup.1 represents a methyl group having .alpha.- or .beta.- configuration or a dimethyl, methylene or spirocyclopropyl group; W represents a valence bond or a C.sub.1-5 alkylene group; X represents azide; and A.dbd. represents a group selected from the group consisting of ##STR11## where R.sup.6 and R.sup.7, which may be the same or different, each represent a hydrogen atom or an O-protecting group which is an etherifying group which is a tri(C.sub.1-6 alkyl)silyl, tri-(C.sub.6-12 aryl)silyl or mixed C.sub.1-6 alkyl-C.sub.6-12 arylsilyl group, a C.sub.1-6 alkyl group optionally interrupted by an oxygen atom or a tetrahydropyranyl group or is an esterifying group which is a C.sub.1-6 alkanoyl group, an aroyl group containing 7-15 carbon atoms, a C.sub.1-6 alkane sulphonyl group optionally substituted with a halogen atom or a p-toluene sulphonyl group.