甲醇 、
6(S)-{2(Z)-[4-bromo-2(S)-hydroxy-2-(1(R)-hydroxy-5-phenyl-pentyl)-5-oxo-cyclopent-3-enylidene]-1(R)-hydroxy-ethyl}-tetrahydropyran-2-one 在
potassium carbonate 作用下,
反应 4.0h,
以9 mg的产率得到6(Z)-[8-bromo-2(S)-2-(1(R)-hydroxy-5(S)-phenylpentyl)-5-oxo-cyclopent-3-enylidene]-(5R),(6R)-dihydroxy-heptanoic acid methyl ester