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 8236959 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 07, 2012

Filed:

Feb. 28, 2008
Applicants:

Rajendra Narayanrao Kankan, Maharashtra, IN;

Dharmaraj Ramachandra Rao, Maharashtra, IN;

Dilip Birari, Maharashtra, IN;

Ashwini Amol Sawant, Maharashtra, IN;

Inventors:

Rajendra Narayanrao Kankan, Maharashtra, IN;

Dharmaraj Ramachandra Rao, Maharashtra, IN;

Dilip Birari, Maharashtra, IN;

Ashwini Amol Sawant, Maharashtra, IN;

Assignee:

Cipla Limited, Mumbai, IN;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 215/28 (2006.01);
U.S. Cl.
CPC ...
Abstract

A process for preparing a compound of formula (III) comprising condensing an oxiranyl compound of formula (I) with an amine of formula (II) or a salt thereof wherein: Ris a group selected from alkyl, aryl, allyl, alkoxy, cycloalkyl, heterocyclic, alkenyl, benzocycloalkyl, aralkyl, haloarylalkyl, heteroaralkyl, haloalkyl, alkoxyaralkyl, substituted silyl and benzyl; and Ris hydrogen, optionally substituted silyl or optionally substituted benzyl. There is also described a process for preparing (R,R)-carmoterol from compound (III).


Find Patent Forward Citations

Kankan, Rajendra. (2012). Process for preparing isomers of carmoterol (U.S. Patent No. 8236959). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8236959

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