magnesium,ethynoxyethane,bromide 、
rac-3,3-ethanediyldioxy-11β-hydroxy-16-methyl-14-oxo-14,15-seco-androsta-5,15-dien-18-oic acid-lactone 在
乙醚 、
苯 作用下,
生成
rac-3,3-ethanediyldioxy-16-ethoxy-11β,14-dihydroxy-20-methyl-16,17-seco-pregna-5,20-dien-15-yn-18-oic acid-11-lactone 、
rac-3,3-ethanediyldioxy-16-ethoxy-11β,14-dihydroxy-20-methyl-16,17-seco-14β-pregna-5,20-dien-15-yn-18-oic acid-11-lactone