2-METHYLENE-19-NOR-(23S)-25-DEHYDRO-1??-HYDROXYVITAMIN D3-26,23-LACTONE AND 2-METHYLENE-19-NOR-(23R)-25-DEHYDRO-1??- 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.