(+/-)-20-deoxycamptothecin

O-methylcamptothecin

2-(8-methylene-9-oxo-5b,6,7,8,9,11-hexahydro-indolizino[1,2-b]quinolin-7-yl)-butyric acid methyl ester

4-乙基-7,8-二氢-4-羟基-1H-吡喃并[3,4-f]吲嗪-3,6,10(4H)-三酮

6-cyano-1,1-(ethylenedioxy)-7-[(ethoxycarbonyl)methyl]-5-oxo-Δ6(8)-tetrahydroindolizine