甲醇 、
6-{(1E,3S,5S,6S,7E,9E,11E)-[13-(4-methoxybenzyloxy)-6-(methoxymethoxy)-1,3,5,11-tetramethyltrideca-1,7,9,11-tetraen-1-yl]}-2,2-dimethyl-4H-1,3-dioxen-4-one 以
甲苯 为溶剂,
以54%的产率得到methyl 3-[(1S,2S,4aS,5S,6S,8S,8aR)-5-(methoxymethoxy)-2-[(E)-4-[(4-methoxyphenyl)methoxy]but-2-en-2-yl]-1,6,8-trimethyl-4a,5,6,7,8,8a-hexahydro-2H-naphthalen-1-yl]-3-oxopropanoate