(E)-4-[(1S,3S,4R,6R)-3-hydroxy-2,2,6-trimethyl-4-[(2R,3R,4S,6R)-2,3,4-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-7-oxabicyclo[4.1.0]heptan-1-yl]but-3-en-2-one 生成
(E)-4-((1S,3S,4R,6R)-3,4-Dihydroxy-2,2,6-trimethyl-7-oxa-bicyclo[4.1.0]hept-1-yl)-but-3-en-2-one