cytospolide K 、
(R)-methoxytrifluoromethylphenylacetyl chloride 在
吡啶 作用下,
以55%的产率得到[(2S,6E,8R,9R)-9-methyl-10-oxo-2-[(4S)-4-[(2S)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoyl]oxypentyl]-2,3,4,5,8,9-hexahydrooxecin-8-yl] (2S)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoate