Beta lactams
US4619787A · kind A · utility
1Cited by
0References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1984 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Nov 13, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The novel compounds of the formula ##STR1## wherein R.sup.1 is hydrogen, a residue readily removable by reduction, lower 1-hydroxyalkyl or lower alkanoyl and PA1 R.sup.2 is hydrogen, or each of R.sup.1 and R.sup.2 is a residue readily removable by reduction; PA1 R.sup.3 is hydrogen or lower alkyl; PA1 R.sup.4 is hydrogen or a readily removable protecting group; and PA1 A is lower alkylidene or (C.sub.5-7)-cycloalkylidene, are valuable intermediates for the manufacture of antimicrobially-active .beta.-lactams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.