[EN] ANTI-FOLATE ANTIMALARIALS WITH DUAL-BINDING MODES AND THEIR PREPARATION<br/>[FR] ANTIPALUDIQUES ANTI-FOLATE À DOUBLE MODE DE LIAISON ET LEUR PRÉPARATION
申请人:NAT SCIENCE AND TECHNOLOGY DEV AGENCY
公开号:WO2012121682A2
公开(公告)日:2012-09-13
The present invention is anti-folate antimalarials with dual-binding modes of the general formula (I) wherein R1 and R2 which may be the same or different are independently selected from methyl or ethyl or alkylphenyl, R3 is independently hydrogen, halide, lower alkyl substituted with ester, carboxylic, amide, and ether. Linker is X(CH2)nY wherein X and Y which may be the same or different are independently selected from oxygen, carbon, nitrogen, substituted phenyl where n is an integer from 1 to 2- 6, or pharmaceutically acceptable salts therefore. The anti-folate antimalarials with dual-binding modes act as novel inhibitors with good inhibition constants against wild-type, double (C59R+S108N), triple (N51+C59R+S108N, C59R+S108N+1164L), and quadruple (N51+C59R+S108N+I164L) mutant enzymes. The compounds are also effective against wild type (Tm4/8.2) and mutants (K1CB1, W2, Csl-2 and Vl/S) malaria parasites.