Process for preparation of beta-lactam derivatives
US4925934A · kind A · utility
13Cited by
0References
6Claims
0Family size
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Inventors
Key dates
| Filing date | Mar 1, 1989 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Mar 1, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides a process for preparing a .beta.-lactam derivative represented by the formula ##STR1## the process comprising reacting a .beta.-lactam derivative represented by the following formula (II) and having a protected carboxyl group with a cresol; ##STR2## wherein R represents a benzyl group having an electron-donating group as a substituent on the phenyl ring, a diphenylmethyl group which may have an electron-donating group as a substituent on the phenyl ring or a tert-butyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.