(5Z)-5-[(2S,2aR,6S,7aS,7bS,8R,9S)-7b-(1E)-1-(1'-hydroxymethyl)hexahydro-9-methyl-4H-2,2,6-(epoxy[1]propanyl[3]ylidene)furo[2,3,4-gh]pyrolizin-10-ylidene]-4-methoxy-3-methyl-2(5H)-furanone 、
二苯二硫醚 在
三丁基膦 作用下,
以
乙腈 为溶剂,
以32%的产率得到(5E)-5-[(2S,2aR,6S,7aS,7bS,8R,9S)-7b-(1E)-1-phenylthiomethyl-hexahydro-9-methyl-4H-2,2,6-(epoxy[1]propanyl[3]ylidene)furo[2,3,4-gh]pyrolizin-10-ylidene]-4-methoxy-3-methyl-2(5H)-furanone