20-deoxyazido-7-ethyl-10-methoxycamptothecin

4-amino-4-ethyl-6,6-ethylenedioxy-7,8-dihydro-1H-pyrano[3,4-f]indolizine-3,10(4H)-dione

4-amino-4-ethyl-7,8-dihydro-1H-pyrano(3,4-f)indolizine-3,6,10(4H)-trione*CF3CO2H

(+-)-4-氨基-4,11-二乙基-9-甲氧基-1H-吡喃并(3',4':6,7)吲哚嗪并(1,2-b)喹啉-3,14(4H,12H)-二酮