Naphthacene derivatives
US3957755A · kind A · utility
5Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1971 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Oct 7, 1991 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H15/252
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Naphthacene derivatives of the formula: ##SPC1## Wherein each of R.sub.1 and R.sub.2 represents an oxygen atom or a group of the formula ##EQU1## and R.sub.3 represents hydrogen, or an alkyl, alkanoyl, thioalkanoyl, aryl, aroyl, carbamoyl, thiocarbamoyl, methylthiocarbamoyl or amidino group, these groups being optionally substituted, and R.sub.4 represents hydrogen, or R.sub.3 and R.sub.4 together with the nitrogen atom to which they are attached represent piperazin-1-yl which carries on the second nitrogen atom an optionally substituted alkyl group, and non-toxic salts thereof, possess anti-tumor properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.