Camptothecin analogues and methods of preparation thereof
US5525731A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1994 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Oct 25, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H17/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Substituted analogues of camptothecin possessing cytotoxic activity towards cancer cells, of the general structure: ##STR1## wherein E is H, CO.sub.2 R, CONH.sub.2, CONHR, CONR.sub.2, or CN; R.sup.0 and R.sup.1 are independently the same or different and are H, or a linear or branched alkyl, linear or branched alkylaryl, hydroxyalkyl or aryl group; R.sup.2, R.sup.3 and R.sup.4 are independently the same or different and are H, or a linear or branched alkyl, linear or branched alkylaryl, hydroxyalkyl or aryl group; R.sup.5, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 are independently the same or different and are H, or a linear or branched alkyl, linear or branched alkylaryl or aryl group, or an alkoxy, aryloxy, hydroxyalkyl, C-glycal, nitro, cyano or aminoalkoxy group, or CO.sub.2 R, Cl, F, Br, I, SR.sup.10, NR.sup.11 R.sup.12 or OR.sup.13 ; R is H, an alkyl, aryl, alkylaryl or hydroxyalkyl group; R.sup.10, R.sup.11 and R.sup.12 are independently the same or different and are H, an alkyl, aryl, alkylaryl or acyl group; R.sup.13 is glycosyl; and n is 0 or 1. Also provided are compositions comprising the analogues and methods of treating tumors as well as methods for preparing the analogu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.