(S)-1-(6-methoxy-5-(methoxymethoxy)-7-methyl-2-((2S,4S,8S,E)-4,6,8-trimethyldeca-6,9-dien-2-yl)benzofuran-4-yl)-2-((4R,5S,6R)-2,2,5-trimethyl-6-vinyl-1,3-dioxan-4-yl)propan-1-ol 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
反应 16.5h,
以62%的产率得到(1R,2S,3S,12S,14S,16E,18S,19E,21R,25S)-6-methoxy-5-(methoxymethoxy)-2,7,12,14,16,18,23,23,25-nonamethyl-22,24,26-trioxatetracyclo[19.3.1.18,11.04,9]hexacosa-4(9),5,7,10,16,19-hexaen-3-ol