3-酞酰亚胺基丙酸甲酯 、
6-chloracetyl triptolide ester 以
四氢呋喃 、
乙腈 为溶剂,
以75%的产率得到methyl (2-(((5bS,6aS,7aR,8R,8aS,9aS,9bS,10aS,10bS)-8a-isopropyl-10b-methyl-3-oxo-1,2,3,5,5b,6,6a,8,8a,9a,9b,10b-dodecahydrotris(oxireno)[2',3':4b,5;2'',3'':6,7;2''',3''':8a,9]phenanthro[1,2-c]furan-8-yl)oxy)-2-oxoethyl)-L-alaninate