2-((1S,2R,5S)-2-isopropyl-5-methylcyclohexyl) 3-methyl (1R,2S,3S,4S,7R)-7-(tertbutoxycarbonylamino)-7-(hydroxymethyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate 、
叔丁基二甲硅基三氟甲磺酸酯 在
N-甲基咪唑 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以94%的产率得到2-((1R,2S,5R)-2-isopropyl-5-methylcyclohexyl) 3-methyl (1R,2S,3S,4S,7R)-7-(tertbutoxycarbonylamino)-7-((tert-butyldimethylsilyloxy)methyl)bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate