ethyl (+/-)-10,11-dihydro-3-hydroxy-2-methyl-5H-dibenzo[a,d]cycloheptene-10-acetate 、
2-[N-(3-methanesulfonyloxy-1-propyl)-N-(tert-butoxycarbonyl)amino]pyridine-N-oxide 在
NaH 作用下,
以
二甲基亚砜 、 mineral oil 为溶剂,
以42%的产率得到ethyl (+/-)-10,11-dihydro-2-methyl-3-[3-[N-(tert-butoxycarbonyl)-N-(1-oxopyridin-2-yl)amino]-1-propyloxy]-5H-dibenzo[a,d]cycloheptene-10-acetate