3-Methoxy-14 alpha, 15 alpha-methylenestra-1,3,5(10), 8-tetraen-17 alp
ha-ol on hydrogenation with triethylsilane/trifluoroacetic acid yielde
d 3-methoxy-14 beta, 15 beta-methylenestra-1,3,5(10)-trien-17 alpha-ol
, not the 14 alpha, 15 alpha-methylene-9 beta product as previously de
scribed.