US 4,225,494 A · Maytansinol esters

Abstract

A novel Antibiotic C-15003 is produced by cultivating a microorganism of the genus Nocardia. The Antibiotic C-15003 is useful as an antifungal agent or an antiprotozoan agent.

Claims4

Dependent claims

Antibiotic C-15003 which has the formula:

##STR10## wherein R represents ##STR11##

Dependencies are inferred from the claim text.

Facts

Application

05/972,492Filed 22 Dec 1978 · division

Priority

JP 52-3716631 Mar 1977

Granted

30 Sep 1980

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

C07D 491/18
In which the condensed system contains three hetero rings: bridged systems
C07D 498/18
In which the condensed system contains three hetero rings: bridged systems
C12N 1/205
Bacteria; Culture media therefor: bacterial isolates
C12P 17/188
Containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system, e.g. rifamycin: heterocyclic…

Abstract

A novel Antibiotic C-15003 is produced by cultivating a microorganism of the genus Nocardia. The Antibiotic C-15003 is useful as an antifungal agent or an antiprotozoan agent.

Maytansinol esters

Life of this patent

Abstract

Claims4

Maytansinol esters

Life of this patent

Abstract

Claims4