methyl (13R,14S,16S,18R)-11-cyano-13-ethyl-16-methoxy-1,11-diazatetracyclo[12.3.1.02,7.08,17]octadeca-2,4,6,8(17)-tetraene-18-carboxylate 在
乙酸铵 作用下,
以
溶剂黄146 为溶剂,
反应 4.0h,
以79%的产率得到methyl (8R,13R,14S,16S,17R,18R)-13-ethyl-16-methoxy-1,11-diazapentacyclo[12.3.1.02,7.08,17.011,17]octadeca-2,4,6-triene-18-carboxylate