Mycoplanecin derivatives and their preparation
US4370266A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1981 |
| Grant date | Jan 25, 1983 |
| Priority date | — |
| Expiry date | Apr 3, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S930/27
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Mycoplanecin derivatives of formula (I): ##STR1## [wherein: R represents a hydrogen atom, an N-(.alpha.-ketobutyryl)-N-methylvalyl group or an N-(.alpha.-hydroxybutyryl)-N-methylvalyl group; PA1 R.sup.1 represents a methyl group or an ethyl group; and PA1 when R.sup.1 represents a methyl group, R.sup.2 represents an isobutyl group and, when R.sup.1 represents an ethyl group, R.sup.2 represents a pentyl group] have antibacterial activity which is particularly pronounced against bacteria of the genus Mycobacterium. The compounds in which R represents and N-(.alpha.-ketobutyryl)-N-methylvalyl group, named Mycoplanecin B (R.sup.1 represents a methyl group) and Mycoplanecin C (R.sup.1 represents an ethyl group), may be prepared by cultivation of a microorganism of the genus Actinoplanes, while the compounds where R represents an N-(.alpha.-hydroxybutyryl)-N-methylvalyl group or a hydrogen atom can be prepared by reducing the corresponding compound where R represents an N-(.alpha.-ketobutyryl)-N-methylvalyl group or by hydrolyzing the corresponding compound where R represents an N-(.alpha.-ketobutyryl)-N-methylvalyl or N-(.alpha.-hydroxybutyryl)-N-methylvalyl group, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.