methyl (Z)-7-[(1R,2R,3R,5S)-5-acetyloxy-2-[(E,3S)-3-hydroxy-4-phenoxybut-1-enyl]-3-(oxan-2-yloxy)cyclopentyl]hept-5-enoate 、
3,6-二氢吡喃 生成 methyl (Z)-7-[(1R,2R,3R,5S)-5-acetyloxy-3-(oxan-2-yloxy)-2-[(E,3S)-3-(oxan-2-yloxy)-4-phenoxybut-1-enyl]cyclopentyl]hept-5-enoate