methyl 4-[(2S,3S,5R,7S)-4,8-dioxatetracyclo[7.4.0.02,7.03,5]trideca-1(13),9,11-trien-10-yl]butanoate 、
ethyl-methoxy-[3-[(2-methylpropan-2-yl)oxy]oct-1-ynyl]alumane 生成 methyl 4-[(1S,2R,3aS,8bS)-2-hydroxy-1-[3-[(2-methylpropan-2-yl)oxy]oct-1-ynyl]-2,3,3a,8b-tetrahydro-1H-cyclopenta[b][1]benzofuran-5-yl]butanoate