(19S)-12-ethoxy-19-ethyl-19-hydroxy-8-nitro-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2(11),3,5,7,9,15(20)-heptaene-14,18-dione 在
盐酸 、
对甲苯磺酸 作用下,
以
乙醇 、
苯 为溶剂,
反应 20.0h,
生成 (19S)-19-ethyl-19-hydroxy-12-(2-methoxyethoxy)-8-nitro-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2(11),3,5,7,9,15(20)-heptaene-14,18-dione