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

摘要

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