在
sodium hydride 作用下,
以
四氢呋喃 、 mineral oil 、
叔丁醇 为溶剂,
以76%的产率得到(2R,3R,4S,5S,21R,23S,24R,26S)-2,5-dimethyl-13,34-diphenyltridecacyclo[24.14.1.16,14.02,24.03,39.04,8.05,23.07,12.015,20.027,32.033,41.035,40.021,42]dotetraconta-1(41),6(42),7(12),8,10,13,15,17,19,27,29,31,33,35(40),36,38-hexadecaene