rac-(1'R,1a'R,1a1'R,2S,4a'R,5'R,6''R,7a'S)-6''-methoxy-5'-methyldecahydro-2''H,3'H,4''H-dispiro[oxirane-2,2'-cyclobuta[de]naphthalene-1',3''-pyran] 在
盐酸 、 bromomagnesium N-isopropyl-N-cyclohexylamide 作用下,
以
四氢呋喃 、
甲苯 为溶剂,
反应 20.0h,
生成 (E)-5-((1S,1aR,4S,4aS,7aR,7bS)-1,7-Bis-hydroxymethyl-4-methyl-1a,2,3,4,4a,5,7a,7b-octahydro-1H-cyclobuta[de]naphthalen-1-yl)-2-methyl-pent-2-enoic acid ethyl ester