Penicillin derivatives
US4416883A · kind A · utility
2Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1981 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Jun 24, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A compound of formula (I) or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof: ##STR1## wherein R is phenyl, 4-hydroxy phenyl, or a 5- or 6-membered heterocyclic ring containing up to three heteroatoms selected from oxygen, sulphur or nitrogen, optionally substituted with hydroxy, amino, halogen or C.sub.1-6 alkoxy; PA0 R.sup.1 represents hydrogen or C.sub.1-6 alkyl; PA0 R.sup.2 and R.sup.3 are the same or different and represent hydrogen, C.sub.1-6 alkyl, halogen, amino, hydroxy, or C.sub.1-6 alkoxy. Their preparation and use is described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.