Novel inhibitors of the sodium–calcium exchanger: benzene ring analogues of N-guanidino substituted amiloride derivatives
摘要:
A series of N-guanidino substituted 2,4-diamino-5-carbonylguanidine molecules related to amiloride were synthesised and, evaluated for their ability to inhibit the sodium-calcium exchanger in rat insulinoma cells (RINm5F) and human platelets. Specific chemical pathways were used to prepare the benzene derivatives designed as bioisosteric analogues of the pyrazine derivatives of amiloride. Several so-called 'simplified analogues', where some substituents of amiloride were omitted or replaced, were also prepared and included in the biological evaluation. The inhibitory potency of the sodium-calcium exchanger was screened on both cell types by measuring their effect on Ca-45(2+) uptake. Among the most active compounds, N-(2 -amino-5-chloro-4-nitrobenzoyl)-N'-(1-naphtylmethyl)guanidine (IC50 = 3.4 muM) was found more active than amiloride (IC50 = 690 muM) and 3,4-dichlorobenzamil (IC50 = 15.2 muM), the reference inhibitor. (C) 2001 Editions scientifiques et medicales Elsevier SAS.
Novel inhibitors of the sodium–calcium exchanger: benzene ring analogues of N-guanidino substituted amiloride derivatives
摘要:
A series of N-guanidino substituted 2,4-diamino-5-carbonylguanidine molecules related to amiloride were synthesised and, evaluated for their ability to inhibit the sodium-calcium exchanger in rat insulinoma cells (RINm5F) and human platelets. Specific chemical pathways were used to prepare the benzene derivatives designed as bioisosteric analogues of the pyrazine derivatives of amiloride. Several so-called 'simplified analogues', where some substituents of amiloride were omitted or replaced, were also prepared and included in the biological evaluation. The inhibitory potency of the sodium-calcium exchanger was screened on both cell types by measuring their effect on Ca-45(2+) uptake. Among the most active compounds, N-(2 -amino-5-chloro-4-nitrobenzoyl)-N'-(1-naphtylmethyl)guanidine (IC50 = 3.4 muM) was found more active than amiloride (IC50 = 690 muM) and 3,4-dichlorobenzamil (IC50 = 15.2 muM), the reference inhibitor. (C) 2001 Editions scientifiques et medicales Elsevier SAS.
[EN] DYE COMPOSITION USING AT LEAST ONE OXIDATION BASE AND AT LEAST ONE PARTICULAR AMINOBENZENE COUPLER, PROCESSES AND DEVICE<br/>[FR] COMPOSITION COLORANTE UTILISANT AU MOINS UNE BASE D'OXYDATION ET AU MOINS UN COUPLEUR D'AMINOBENZÈNE SPÉCIFIQUE, PROCÉDÉS ET DISPOSITIF
申请人:OREAL
公开号:WO2017050994A1
公开(公告)日:2017-03-30
The present invention relates to a composition for dyeing keratin fibres, in particular human keratin fibres such as the hair, comprising one or more oxidation bases and one or more particular aminobenzene couplers. The invention also relates to a process for dyeing keratin fibres using said composition in the presence of one or more chemical oxidizing agents, and to a multi-compartment device suitable for using said dye composition.