Process and intermediates for preparing 1.alpha.-hydroxyvitamin D compounds
 The invention relates to ring A-diol units suitable for synthesizing 1.alpha.-hydroxyvitamin D compounds by subsequent condensation with appropriate .sup.C /.sub.D -ring fragments and to methods for preparing such ring A-diol units. 
Wisconsin Alumni Research Foundation
C C C C C C
C07C C07C C07C C07C C07C C07C
inventional inventional inventional inventional inventional inventional
Seok H. Hector F. Heinrich K.
Lee DeLuca Schnoes