3-溴丙炔 、
3β-cholest-5-en-3-yl N-(2-aminoethyl)carbamate 在
potassium carbonate 作用下,
以
甲苯 、
乙腈 为溶剂,
以71%的产率得到(3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-((R)-6-methylheptan-2-yl)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl (2-(di(prop-2-yn-1-yl)amino)ethyl)carbamate