(13Z,15E,17E)-3β,28-diacetoxy-22-hydroxymalabarica-13,15,17,24-tetraen-12-one 在
吡啶 、
三氯氧磷 作用下,
以6.5 mg的产率得到Acetic acid (3aS,5aS,6S,7R,9aS,9bS)-6-acetoxymethyl-3a,6,9a-trimethyl-2-oxo-3-[(2E,4E,6E)-1,5,9-trimethyl-deca-2,4,6,8-tetraen-(Z)-ylidene]-dodecahydro-cyclopenta[a]naphthalen-7-yl ester