Processes for preparing 1-butyl-2-[2'-(2H-tetrazol-5-yl) biphenyl-4-ylmethyl]-1H-indole-3-carboxylic acid
US5412102A · kind A · utility
7Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1994 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | May 27, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D403/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to processes for preparing 1-butyl-2-[2'-(2H-tetrazol-5-yl)biphenyl-4-ylmethyl]-1H-indole-3-carboxyli c acid and to intermediates useful in such processes. The present invention also relates to a process for deprotecting compounds containing a protected 2H-tetrazolyl group, which process comprises reacting a the protected compound with a Lewis acid in the presence of a thiol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.