Acyl derivatives of oxazolorifamycins
US5180718A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Jun 21, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D498/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to novel acyl derivatives of rifamycins of the formula ##STR1## and the salts thereof, in which the structural elements --A.sub.1 --A.sub.2 --, --A.sub.3 --A.sub.4 -- and --A.sub.5 --A.sub.6 -- each denote ethylene or vinylene or the elements --A.sub.1 --A.sub.2 -- and --A.sub.3 --A.sub.4 -- each denote ethylene and --A.sub.5 --A.sub.6 -- denotes vinylene; X represents >C(R.sub.6)-- or >N-- and R.sub.6 denotes hydrogen or alkyl; alk denotes an aliphatic hydrocarbon radical; R.sub.1 denotes hydrogen or acyl; R.sub.2 denotes acyl, or alkyl which is optionally substituted by an aromatic radical, and R.sub.3 and R.sub.3 ' represent a common bond, or R.sub.3 denotes hydrogen or acyl, and R.sub.3 ' is hydrogen; R.sub.4 denotes hydrogen, cycloalkyl or aryl; R.sub.5 denotes hydrogen or acetyl; R.sub.7 denotes hydrogen or alkyl, which can be used as active compounds in medicaments, the preparation and use thereof, and pharmaceutical products and the preparation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.