logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5026643 B1

PDFFull Text
Date of Patent:
Jun. 25, 1991

Filed:

Feb. 26, 1990

Fermentation process for the preparation of novel c.25

Applicant:
Inventors:

Christopher J Dutton, New York, NY (US);

David A Perry, New York, NY (US);

Assignee:

Pfizer Inc., New York, NY (US);

Attorneys:

Richardson; Peter C.

Lumb; J. Trevor

Benson; Gregg C.

Primary Examiner:

Herbert J Lilling

Int. Cl.
CPC ...
C12R / ; C12P / ; A61K / ;
U.S. Cl.
CPC ...
435119 ; 435886 ;
Abstract

Antiparasitic milbemycin derivatives having at the C.25 position a substituted 2-propenyl group --C(CH.sub.3).dbd.CH--R.sup.2 wherein R.sup.2 is a C.sub.3 -C.sub.8 alkyl, alkenyl or alkynyl group which may optionally contain an oxygen or sulphur atom as part of the chain, or a C.sub.3 -C.sub.8 cycloalkyl or cycloalkenyl group, or a 3 to 6 membered oxygen or sulphur containing heterocyclic ring which may optionally be substituted by one or more alkyl groups or halogen atoms; and process for their preparation.

Find Patent Forward Citations

Dutton, Christopher. (1991). Fermentation process for the preparation of novel c.25 (U.S. Patent No. 5026643). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5026643

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…