(Z)-2-[(1S,5R,6R)-3-acetyloxy-6-hydroxy-5-phenylselanylcyclohex-2-en-1-yl]oxybut-2-enoic acid 、
(Z)-(4aα,8aβ)-2,3,4a,8a-tetrahydro-3-ethylidene-2-oxo-1,4-benzodioxin-6-carboxylic acid 生成 (3R,4S)-3-[(Z)-1-carboxyprop-1-enoxy]-4-hydroxycyclohexa-1,5-diene-1-carboxylic acid