(RS)-5-acetamido-9-ethyl-2,3-dihydro-9-hydroxy-4-methoxy-1H,12H-benzo(de)pyrano[3',4':6,7]indolizino[1,2-b]quinoline-10,13(9H,15H)-dione 在
氢溴酸 作用下,
反应 7.0h,
以17%的产率得到(RS)-5-amino-2,3-dihydro-4,9-dihydroxy-9-ethyl-1H,12H-benzo(de)pyrano[3',4':6,7]indolizino[1,2-b]quinoline-10,13(9H,15H)-dione