3-吗啉-4-基-雄甾-2-烯-17-醇 、 6-(4-Chloro-phenylamino)-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidine-5-carbaldehyde 在
对甲苯磺酸 作用下,
以
二苯醚 为溶剂,
以11%的产率得到(1S,14S,15S,18S,19S,22S,23R)-4-(4-chlorophenyl)-19-hydroxy-14,18-dimethyl-4,6,8-triazahexacyclo[12.11.0.03,12.05,10.015,23.018,22]pentacosa-3(12),5,10-triene-7,9-dione