Penicillin derivatives
US4562073A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1983 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Aug 1, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A penicillin derivative represented by the following formula ##STR1## wherein R.sub.1 is hydrogen or trialkylsilyl; R.sub.2 is hydrogen, trialkylsilyl or COOR.sub.2 ' wherein R.sub.2 ' is hydrogen, C.sub.1-18 alkyl, C.sub.2-7 alkoxymethyl, C.sub.3-8 alkylcarbonyloxymethyl, C.sub.4-9 alkylcarbonyloxyethyl, (C.sub.5-7 cycloalkyl)carbonyloxymethyl, C.sub.9-14 benzylcarbonyloxyalkyl, C.sub.3-8 alkoxycarbonylmethyl, C.sub.4-9 alkoxycarbonylethyl, phthalidyl, crotonolacton-4-yl, .gamma.-butyrolacton-4-yl, halogenated C.sub.1-6 alkyl substituted with 1 to 3 halogen atoms, C.sub.1-6 alkoxy- or nitro-substituted or unsubstituted benzyl, benzhydryl, tetrahydropyranyl, dimethylaminoethyl, dimethylchlorosilyl, trichlorosilyl, (5-substituted C.sub.1-6 alkyl or phenyl or unsubstituted-2-oxo-1,3-dioxoden-4-yl)methyl, C.sub.8-13 benzoyloxyalkyl or group for forming a pharmaceutically acceptable salt; and R.sub.3 has the same meaning as above R.sub.2 '.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.