(2S,3S,6R)-3-(2-Acetoxy-ethyl)-6-methoxy-3,6-dihydro-2H-pyran-2-carboxylic acid (1R,2S,5R)-2-isopropyl-5-methyl-cyclohexyl ester 在
三氟化硼乙醚 作用下,
以
乙醚 为溶剂,
以100%的产率得到(2S,3S,6S)-3-(2-Acetoxy-ethyl)-6-methoxy-3,6-dihydro-2H-pyran-2-carboxylic acid (1R,2S,5R)-2-isopropyl-5-methyl-cyclohexyl ester