(1'S,5'S,6'R,9'S,10'S,13'S)-5'-methyl-6'-prop-1-ynylspiro[1,3-dioxolane-2,15'-18-oxapentacyclo[11.4.1.01,13.02,10.05,9]octadec-2-ene]-6'-ol 、 magnesium,4H-pyridin-4-ide,chloride 生成 (5'S,8'S,13'S,14'S,17'R)-13'-methyl-17'-prop-1-ynyl-11'-pyridin-4-ylspiro[1,3-dioxolane-2,3'-2,4,6,7,8,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthrene]-5',17'-diol