anti-10-<3,4-Bis(methoxycarbonyl)-(1α,2β,5β,6α)-tricyclo<4.2.1.0
2,5>nona-3,7-dien-9-yliden>-8-oxa-(1α,2β,5β,6α,7β,9β)-tetracyclo<4.3.1.0
2,5.0
7,9>dec-3-en-3,4-dicarbonsaeure-dimethylester                                                                                                                                                                                              以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 1.5h,
                                                                                                                以23%的产率得到D,L-(1R*,5S*,11S*,14R*,16S*)-6-Oxadecacyclo<9.8.0.0
1,14.0
2,10.0
3,9.0
4,19.0
5,7.0
8,19.0
15,17.0
16,18>nonadec-12-en-2,10,16,18-tetracarbonsaeure-tetramethylester