HIGHLY PURE LAQUINIMOD OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF
申请人:Dixit Girish
公开号:US20120009226A1
公开(公告)日:2012-01-12
Provided herein is an impurity of laquinimod, N-ethyl-N-phenyl-1,2-dihydro-4-hydroxy-1-methyl-2-oxoquinoline-3-carboxamide (deschloro laquinimod impurity), and process for preparation and isolation thereof. Provided further herein is a highly pure laquinimod or a pharmaceutically acceptable salt thereof substantially free of deschloro laquinimod impurity, processes for the preparation thereof, and pharmaceutical compositions comprising highly pure laquinimod or a pharmaceutically acceptable salt thereof substantially free of deschloro laquinimod impurity.
2-OXO-1,2-DIHYDRO-QUINOLINE MODULATORS OF IMMUNE FUNCTION
申请人:Gant Thomas G.
公开号:US20100055072A1
公开(公告)日:2010-03-04
The present invention relates to new 2-oxo-1,2-dihydro-quinoline modulators of immune function, pharmaceutical compositions thereof, and methods of use thereof.
本发明涉及新的2-氧代-1,2-二氢喹啉免疫功能调节剂,其药物组成物,以及其使用方法。
New compositions containing quinoline compounds
申请人:Jansson Karl
公开号:US20050192315A1
公开(公告)日:2005-09-01
A stable solid pharmaceutical composition consisting essentially of an effective amount of a salt of formula (II)
together with an alkaline-reacting component maintaining the pH preferably above 8, or a salt with a divalent metal cation; and at least one pharmaceutical excipient; said salt of formula (II) being essentially stable during storage at room temperature for a period of at least 3 years. A process for stabilizing the salt of formula (II). A crystalline salt of formula (II) and a process for preparing said salt.
Synthesis and Reactivity of Laquinimod, a Quinoline-3-carboxamide: Intramolecular Transfer of the Enol Proton to a Nitrogen Atom as a Plausible Mechanism for Ketene Formation
concomitant formation of ketene 3. This proton transfer is especially facilitated for 2 because the intramolecular hydrogen bond to the carbonyl oxygen is weakened due to steric interactions. Both 1 and 2 undergo solvolosis reactions that obey first-order reaction kinetics, further supporting the theory that these two molecules are able to decompose unimolecularly into ketene 3. The solvent-dependent
[EN] INTERMEDIATE COMPOUNDS AND PROCESSES FOR THE PREPARATION OF QUINOLINE DERIVATIVES SUCH AS LAQUINIMOD SODIUM<br/>[FR] COMPOSÉS INTERMÉDIAIRES ET PROCÉDÉS DE PRÉPARATION DE DÉRIVÉS DE QUINOLÉINE TELS QUE LAQUINIMOD SODIUM
申请人:MAPI PHARMA LTD
公开号:WO2012070051A1
公开(公告)日:2012-05-31
The present invention relates to processes for the preparation of quinoline-3 -carboxamide derivatives, such as sodium 5-chloro-3-(ethylphenylcarbamoyl)-l-methyl-2- oxo-l,2-dihydroquinolin-4-olate (Laquinimod sodium). The present invention further relates to intermediates formed in such processes.