2-methylene-19-nor-(23s)-25-dehydro-1alpha-hydroxyvitamin D3-26,23-lactone and 2-methylene-19-nor-(23R)-25-dehydro-1alpha-hydroxyvitamin D3-26,23-lactone

摘要

Compounds of formula 1A and 1B are provided where X1 and X2 are independently selected fromH or hydroxy protecting groups. Such compounds may be used in preparing pharmaceutical compositionsand are useful in treating a variety of biological disorders.