Process for preparing 2-exo-methylenepenam derivatives
US5196530A · kind A · utility
4Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1992 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Mar 10, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D499/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for preparing a 2-exo-methylenepenam derivative represented by the formula (2), the process being characterized by reacting an allenyl .beta.-lactum compound represented by the formula (1) with a metallic reducing agent, in which R.sup.1, R.sup.2, R.sup.3 and X are defined in the specification. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.