New process for the preparation of pristinamycin II.sub.B derivatives
US4775753A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1987 |
| Grant date | Oct 4, 1988 |
| Priority date | — |
| Expiry date | Jul 7, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S930/27
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Pristinamycin II.sub.B derivatives of formula I in which R represents: ##STR1## either a 4- to 7-membered nitrogen-containing heterocyclic radical, optionally containing 1 or more other hetero atoms chosen from nitrogen, oxygen and sulphur in the sulphoxide or sulphone form, and unsubstituted or substituted by alkyl, PA1 or alkyl of 2 to 4 carbon atoms, substituted by 1 or 2 radicals chosen from phenyl, cycloalkylamino or N-alkyl-N-cycloalkylamino having 3 to 6 ring carbon atoms, alkylamino, dialkylamino or dialkylcarbamoyloxy (the alkyl parts of these last 2 radicals being optionally joined to form, with the nitrogen atom to which they are attached, a 4- to 7-membered saturated or unsaturated heterocycle optionally containing another hetero atom chosen from nitrogen, oxygen and sulphur in the sulphoxide or sulphone form, and unsubstituted or substituted by alkyl) or a said alkyl substituted by one or more 4- or 7-membered nitrogen-containing heterocycles optionally containing 1 or 2 other hetero atoms chosen from nitrogen, oxygen and sulphur in the sulphoxide or sulphone form and unsubstituted or substituted by an alkyl radical, the said heterocycles being attached to the alkyl vi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.