Publication number: 20230404973
Abstract: The invention concerns a compound of formula (I), Formula (I), R, R1 and R2 are independently selected form the group consisting of: —a hydrogen atom, —a halogen atom, —an alkyl group, linear, cyclic or branched, saturated or unsaturated, possibly substituted, comprising from 1 to 10 carbon atoms, —an acyl group comprising from 1 to 10 carbon atoms, —a carboxyl group, —an amido group comprising from 1 to 10 carbon atoms, and —an imino group, possibly substituted by an alkyl group, linear, cyclic or branched, saturated or unsaturated, and wherein R3, R4, R5 and R6 are independently selected form the group consisting of: —a hydrogen atom, —a halogen atom, —a hydroxyl group, —an alkyl group, linear, cyclic or branched, saturated or unsaturated, possibly substituted, comprising from 1 to 10 carbon atoms, —an alkoxy group comprising from 1 to 10 carbon atoms, —an acyl group comprising from 1 to 10 carbon atoms, —a carbonate group from 1 to 10 carbon atoms, —a carboxyl group, and —a cyano group.
Type:
Application
Filed:
October 12, 2020
Publication date:
December 21, 2023
Inventors:
Laurence LAFANECHÈRE, Renaud PRUDENT, Lauralie PERONNE, Marc BILLAUD, Audrey VERNET, Eric DENARIER, Patrick DALLEMAGNE, Sylvain RAULT, Peggy SUZANNE, Jean-charles LANCELOT, Serge PERATO, Aurélien LESNARD
Patent number: 6451789
Abstract: Compound of formula (I):
wherein:
n represents 0 or 1,
R1 represents hydrogen, arylalkyl, alkyl, acyl, alkoxycarbonyl, arylalkoxycarbonyl or trifluoroacetyl,
R2 represents alkyl,
X represents oxygen, chlorine, OR3, SR4 or NOR5,
R3 represents hydrogen , alkyl, acyl, alkoxycarbonyl or arylalkoxycarbonyl,
R4 represents hydrogen, alkyl or aryl,
R5 represents hydrogen or optionally substituted alkyl,
represents a single or double bond,
Ar represents aryl or heteroaryl, its isomers and addition salts thereof with a pharmaceutically acceptable acid, and medicinal products containing the same which are useful as facilitators of memory and cognition and antalgic agents.
Type:
Grant
Filed:
September 26, 2001
Date of Patent:
September 17, 2002
Assignee:
Les Labortoires Servier
Inventors:
Sylvain Rault, Olivier Renault, Jean Guillon, Patrick Dallemagne, Pierre Renard, Bruno Pfeiffer, Pierre Lestage, Marie-Cécile Lebrun