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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 10442762 B1

PDFFull Text
Date of Patent:
Oct. 15, 2019

Filed:

Nov. 10, 2016

Process for the preparation of carboprost and its tromethamine salt

Applicant:

Chinoin Gyógyszer És Vegyészeti Termékek Gyára Zrt., Budapest, HU;

Inventors:

Péter Buzder-Lantos, Budapest, HU;

Zsuzsanna Kardos, Budapest, HU;

Irén Hortobágyi, Budapest, HU;

István Lászlófi, Budapest, HU;

Imre Juhász, Budapest, HU;

László Fónagy, Budapest, HU;

Csaba Váradi, Budapest, HU;

Ágnes Nagyné Borkó, Budapest, HU;

Assignee:

CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA ZRT., Budapest, HU;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Amy C Bonaparte

Int. Cl.
CPC ...
C07C 405/00 (2006.01); B01D 15/26 (2006.01); B01D 15/42 (2006.01); B01J 20/10 (2006.01); C07C 7/12 (2006.01);
U.S. Cl.
CPC ...
C07C 405/00 (2013.01); B01D 15/265 (2013.01); B01D 15/426 (2013.01); B01J 20/103 (2013.01); C07C 7/12 (2013.01); C07C 2601/08 (2017.05);
Abstract

The subject of the invention is a novel process for the preparation of Carboprost tromethamine salt where alkylation the enone of the general formula (II) is carried out in the presence of a chiral auxiliary in aprotic solvent with a Grignard reagent. The methyl ester epimers of formula (VII) are separated by gravity silica gel chromatography and the salt formation is carried out by using solid tromethamine base.

Find Patent Forward Citations

Buzder-Lantos, Péter. (2019). Process for the preparation of carboprost and its tromethamine salt (U.S. Patent No. 10442762). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10442762

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