4-Oxo-9-oxabicyclo<5.3.0>deca-2,5,7,10-tetraen-3,5-dicarbonsaeure-dimethylester 、
丁炔二酸二甲酯 以
甲苯 为溶剂,
反应 72.0h,
以86%的产率得到(1α,2α,3β,11β,12α,13α)-7,17-Dioxo-21,22-dioxahexacyclo<11.7.1.13,11.02,12.04,10.014,20>docosa-4(10),5,8,14(20),15,18-hexaen-2,6,8,12,16,18-hexacarbonsaeure-hexamethylester