(1S)-(+)-menthyl chloroformate 、
tert-butyl 3-bromo-5,6,7,8,9,10-hexahydro-7,10-iminocyclohept[b]indole-11-carboxylate 、 ammonium chloride 、
sodium hexamethyldisilazane 以
四氢呋喃 为溶剂,
以76%的产率得到11-tert-Butyl 5-((1S,2R,5S)-2-isopropyl-5-methylcyclohexyl) 3-bromo-5,6,7,8,9,10-hexahydro-7,10-iminocyclohept[b]indole-5,11-dicarboxylate