(R)-(+)-α-甲氧基-α-(三氟甲基)苯乙酸 、 [(3S,8R)-1-hydroxy-9-methoxy-1,3,8-trimethyl-2,4-dioxo-5,6,7,8-tetrahydrophenanthren-3-yl] (2R,3R,4S)-3-hydroxy-2,4-dimethylhexanoate 在
4-二甲氨基吡啶 、
N,N'-二环己基碳二亚胺 作用下,
以
氘代氯仿 为溶剂,
以2 mg的产率得到[(3S,8R)-1-hydroxy-9-methoxy-1,3,8-trimethyl-2,4-dioxo-5,6,7,8-tetrahydrophenanthren-3-yl] (2R,3R,4S)-2,4-dimethyl-3-[(2R)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoyl]oxyhexanoate