Synthesis and structure-activity relationships of new 2-phenoxybenzamides with antiplasmodial activity
The 2-phenoxybenzamide 1 from the Medicines for Malaria Venture Malaria Box Project has shown promising multi-stage activity against different strains of P. falciparum. It was successfully synthesized via a retrosynthetic approach. Subsequently, twenty-one new derivatives were prepared and tested for their in vitro activity against blood stages of the NF54 strain of P. falciparum. Several insights into structure-activity relationships were revealed. The antiplasmodial activity and cytotoxicity of compounds strongly depended on the substitution pattern of the anilino partial structure as well as on the size of substituents. The diaryl ether partial structure had further impacts on the activity. Additionally, several physicochemical and pharmacokinetic parameters were calculated (log P, log D7.4 and ligand efficiency) or determined experimentally (passive permeability and CYP3A4 inhibition). The tert-butyl-4-{4-[2-(4-fluorophenoxy)-3-(trifluoromethyl)benzamido]phenyl}piperazine-1-carboxylate possesses high antiplasmodial activity against P. falciparum NF54 (PfNF54 IC50 = 0.2690 μM) and very low cytotoxicity (L-6 cells IC50 = 124.0 μM) resulting in an excellent selectivity index of 460. Compared to the lead structure 1 the antiplasmodial activity was improved as well as the physicochemical and some pharmacokinetic parameters.
Dolensky, Johanna,Hermann, Theresa,Hochegger, Patrick,Kaiser, Marcel,M?ser, Pascal,Pferschy-Wenzig, Eva-Maria,Saf, Robert,Seebacher, Werner,Weis, Robert
(2021/11/08)
NEW VORTIOXETINE INTERMEDIATE AND SYNTHESIS PROCESS THEREOF
The present invention provides a new intermediate II and a method for synthesizing the same. The method comprises: (a) firstly diazotizing a compound of formula I as a raw material, and then halogenating to obtain an intermediate II; and (b) reacting the
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Paragraph 0034-0035
(2017/04/12)
SYNTHESIS OF VORTIOXETINE VIA (2-(PIPERAZINE-1 -YL)PHENYL)ANILINE INTERMEDIATES
The present invention provides a new synthetic process for the production of 1-(2-((2,4- dimethylphenyl)thio)phenyl)piperazine (vortioxetine), a drug for the treatment of depression and anxiety, which is conducted via (2-(piperazine-1-yl)phenyl)aniline intermediates.
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(2015/08/03)
Synthesis of vortioxetine via (2-(piperazine-1-yl)phenyl)aniline intermediates
The present invention provides a new synthetic process for the production of 1-(2-((2,4-dimethylphenyl)thio)phenyl)piperazine (vortioxetine), a drug for the treatment of depression and anxiety, which is conducted via (2-(piperazine-1-yl)phenyl)aniline intermediates.
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(2015/07/22)
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