Intermediates for preparing pirbuterol and analogs
US4632992A · kind A · utility
4Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1984 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Aug 16, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D491/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Processes and intermediates useful in the preparation of bronchodilator compounds of the formula ##STR1## wherein R is hydrogen, methyl or hydroxymethyl are described. Those compounds wherein R is H or CH.sub.3 have been found to have further utility as intermediates for pirbuterol (wherein R is hydroxymethyl).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.