anti-(1S,2R,4S)-7-{[9-(tert-butyl-dimethyl-silanyloxy)-nonyl]-methyl-amino}-bicyclo[2.2.1]heptan-2-ol 、
9H-氧杂蒽-9-甲酰氯 在
sodium hydride 作用下,
以
四氢呋喃 为溶剂,
反应 6.25h,
以54%的产率得到anti-9H-xanthene-9-carboxylic acid (1S,2R,4S)-7-{[9-(tert-butyl-dimethyl-silanyloxy)-nonyl]-methyl-amino}-bicyclo[2.2.1]hept-2-yl ester