10,11-methylenedioxy camptothecins
US5122606A · kind A · utility
35Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1991 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Mar 7, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D491/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method of producing 20(S)-camptothecin, 20(R)-camptothecin and analogs thereof. The method involves the resolution of an mixture of enantiomers of an intermediate lactone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.