| abstract |
The invention concerns novel counterparts of camptothecin and in particular products complying with the following formulae: 8-ethyl-8,9-dihydro-8-hydroxy-1-benzyl-2H,10H,12H-[1,3]oxazino[5,6-f]oxepino[3',4':6,7]indolizino[1,2-b]quinolein-10,13(15H)-dione; 5-ethyl-9,10-difluoro-4,5-dihydro-5-(2-amino-1-oxoethoxy)-1H-oxepino[3',4':6,7]indolizino[1,2-b]quinolein-3,15(4H,13H)-dione; 5-ethyl-9,10-difluoro-4,5-dihydro-5-(2-amino-1-oxopropoxy)-1H-oxepino[3',4':6,7]indolizino[1,2-b]quinolein-3,15(4H,13H)-dione. The invention also concerns their method of preparation, their application as medicines, the pharmaceutical compositions containing them and their use in producing tumoricidal, antiviral and parasiticide medicines. |