Preparation of camptothecin and of its derivatives
US6486320B2 · kind B2 · utility
0Cited by
4References
45Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2001 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Sep 14, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D471/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a novel process for preparation of camptothecin and of its derivatives by convergent synthesis starting from a 3-(aminomethyl)quinoline derivative and 5-hydroxy-5-ethyl-6-oxo-5,6-dihydropyrancarboxylic acid and to the intermediates obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.