Process for the preparation of 1,8-disubstituted-1,3,4,9-tetrahydropyrano (3,4-B)-indole-1-acetic acid esters
US6331638A · kind A · utility
2Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1999 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Oct 4, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D491/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of the esters of 1,8-disubstituted-1,3,4,9-tetrahydropyrano (3,4-b)-indole-1-acetic acid is delineated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.