Synthesis, characterization, molecular docking and in vitro antimalarial properties of new carboxamides bearing sulphonamide.

Abstract:

:Sulphonamides and carboxamides have shown large number of pharmacological properties against different types of diseases among which is malaria. Twenty four new carboxamide derivatives bearing benzenesulphonamoyl alkanamides were synthesized and investigated for their in silico and in vitro antimalarial and antioxidant properties. The substituted benzenesulphonyl chlorides (1a-c) were treated with various amino acids (2a-h) to obtain the benzenesulphonamoyl alkanamides (3a-x) which were subsequently treated with benzoyl chloride to obtain the N-benzoylated derivatives (5a-f, i-n and q-v). Further reactions of the N-benzoylated derivatives or proline derivatives with 4-aminoacetophenone (6) using boric acid as a catalyst gave the sulphonamide carboxamide derivatives (7a-x) in excellent yields. The in vitro antimalarial studies showed that all synthesized compounds had antimalarial property. Compound 7k, 7c, 7l, 7s, and 7j had mean MIC value of 0.02, 0.03, 0.05, 0.06 and 0.08 μM respectively comparable with chloroquine 0.06 μM. Compound 7c was the most potent antioxidant agent with IC50 value of 0.045 mM comparable with 0.34 mM for ascorbic acid. In addition to the successful synthesis of the target molecules using boric acid catalysis, the compounds were found to have antimalarial and antioxidant activities comparable with known antimalarial and antioxidant drugs. The class of compounds reported herein have the potential of reducing oxidative stress arising from malaria parasite and chemotherapeutic agent used in the treatment of malaria.

journal_name

Eur J Med Chem

authors

Ugwu DI,Okoro UC,Ukoha PO,Okafor S,Ibezim A,Kumar NM

doi

10.1016/j.ejmech.2017.04.029

subject

Has Abstract

pub_date

2017-07-28 00:00:00

pages

349-369

eissn

0223-5234

issn

1768-3254

pii

S0223-5234(17)30286-6

journal_volume

135

pub_type

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