Patents Assigned to National Science and Techology Development Agency
  • Publication number: 20130324727
    Abstract: The present invention is anti-folate antimalarials with dual-binding modes of the general formula (I) [refer to structure in the abstract] wherein R1 and R2 which may be the same or different are independently selected from methyl or ethyl or alkyl-phenyl, 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+SIOSN), triple (N51+C59R+SIOSN, C59R+S 1 OSN+I164L), and quadruple (N51+C59R+S108N+I164L) mutant enzymes. The compounds are also effective against wild type (Tm4/S.2) and mutants (K1CB1, W2, Cs1-2 and V1/S) malaria parasites.
    Type: Application
    Filed: February 9, 2012
    Publication date: December 5, 2013
    Applicant: National Science and Techology Development Agency
    Inventors: Bongkoch Tarnchompoo, Penchit Chitnumsub, Sumalee Kamchonwongpaisan, Philip James Shaw, Roonglawan Rattanajak, Sinothai Poen, Tosapol Anukunwithaya, Chayaphat Wongsombat, Yongyuth Yuthavong