N-[(1R,2S,3R,4R,5S,12R,13S,14S,15R,16S)-19,20-dibromo-18,21-dimethoxy-3,14-dimethyl-8-octacyclo[14.6.1.15,12.02,15.03,14.04,13.06,11.017,22]tetracosa-6(11),7,9,17(22),18,20-hexaenyl]acetamide 在
硝酸 、
乙酸酐 作用下,
以
溶剂黄146 为溶剂,
反应 1.0h,
以30%的产率得到(5α,5aβ,5bα,5cβ,6α,11α,11aβ,11bα,11cβ,12α)-8-acetamido-1,4-dimethoxy-5b,11b-dimethyl-9-nitro-5,5a,5c,6,11,11a,11c,12-octahydro-5,12:6,11-dimethanonaphtho<2",3":3',4'>cyclobuta<1',2':3,4>cyclobuta<1,2-b>naphthalene