1-丙炔溴化镁

(5'R,10'R,13'S,16'R)-13',16'-dimethyl-1',2',6',7',8',12',13',14',15'-nonahydro-17'H-spiro[1,3-dioxolane-2,3'-[5,10]epoxycyclopenta[a]phenanthren]-17'-one

(8S,13S,14S,17S)-13-methyl-17-(prop-1-yn-1-yl)-1,2,4,6,7,8,12,13,14,15,16,17-dodecahydrospiro[cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolan]-17-ol

3-缩酮