2-hydroxymethylene-17β-hydroxy-5α-androstan-3-one 、
6-Butylamino-2-phenylpyrimidin-4(3H)-one 在
对甲苯磺酸 作用下,
以
二苯醚 为溶剂,
以75%的产率得到(1S,14S,15S,18S,19S,22S,23R)-4-butyl-19-hydroxy-14,18-dimethyl-7-phenyl-4,6,8-triazahexacyclo[12.11.0.03,12.05,10.015,23.018,22]pentacosa-3(12),5,7,10-tetraen-9-one