Carbonic acid 2,5-dioxo-pyrrolidin-1-yl ester (1S,2R,5S)-2-isopropyl-5-methyl-cyclohexyl ester 、
benzyl N-[[(3aR,4R,6R,6aR)-4-methoxy-2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]methyl]carbamate 在
palladium on activated charcoal
氢气 、
三乙胺 作用下,
以
四氢呋喃 为溶剂,
以75%的产率得到((3aR,4R,6R,6aR)-6-Methoxy-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-ylmethyl)-carbamic acid (1S,2R,5S)-2-isopropyl-5-methyl-cyclohexyl ester