US 4,360,462 AGranted

Process for preparing maytansinol

AssigneeTakeda Chemical Industries, Ltd.

InventorsEiji Higashide, Mitsuko Asai, Seiichi Tanida

Life of this patent

Estimating the term…

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.

Claims3

Dependent claims

A method of producing a compound of the formula:

##STR9## which comprises subjecting Antibiotic C-15003 of the formula:
##STR10## wherein R represents ##STR11## --CO--CH.sub.2 --CH.sub.2 --CH.sub.3 or ##STR12## to reductive hydrolysis.

Dependencies are inferred from the claim text.

Facts

Application: 06/313,974Filed 22 Oct 1981 · division
Priority: JP 52/3716631 Mar 1977
Granted: 23 Nov 1982
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…

Family

Serial811,448Parent of this division · filed 29 Jun 1977
Serial972,492Parent of this division · filed 22 Dec 1978
Serial131,787Parent of this division · filed 19 Mar 1980
US 4,320,200 AParent of this division
US 4,225,494 AParent of this division
US 4,162,940 AParent of this division
US 4,360,462 AThis patent

From the US filing history. Foreign family members aren’t listed.

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