Azetidinone derivatives
US4228074A · kind A · utility
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1References
7Claims
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Assignee
Inventors
Key dates
| Filing date | Sep 8, 1977 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Sep 8, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/1804
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
.beta.-Lactam compounds of the formula (I) ##STR1## (wherein R represents an esterified carboxyl group, --NR.sup.1 R.sup.2 R.sup.3 represents the residue of a nitrogen base, and R.sup.4 represents a hydrogen atom, a hydroxyl group or acylated or etherified hydroxyl group or the residue of a sulphur nucleophile) are disclosed, together with processes for their preparation. The compounds are valuable intermediates for the preparation or purification of further .beta.-lactam compounds having .beta.-lactamase inhibitory activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.