(+-)-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

4-Azido-4-ethyl-1,4,7,8-tetrahydro-pyrano[3,4-f]indolizine-3,6,10-trione

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

1-(2-amino-5-methoxyphenyl)propan-1-one

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

4'-ethyl-1',4',7',8'-tetrahydro-4'-hydroxy-3'H,10'H-spiro[1,3-dioxolane-2,6'-pyrano[3,4-f]indolizine]-3',10'-dione

4-Amino-4-ethyl-1,4,7,8-tetrahydro-pyrano[3,4-f]indolizine-3,6,10-trione

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

20-deoxyazido-7-ethyl-10-methoxycamptothecin