McNamara, Dennis J.; Berman, Ellen M.; Fry, David W.; Werbel, Leslie M. published an article in Journal of Medicinal Chemistry. The title of the article was 《Potent inhibition of thymidylate synthase by two series of nonclassical quinazolines》.Formula: C9H8BrNO4 The author mentioned the following in the article:
The synthesis and biol. activity of two series of nonclassical thymidylate synthase (TS) inhibitors are described. The first is a series of 10-propargyl-5,8-dideazafolic acid derivatives I (R = NH2; R1 = R2 = Cl, R3 = H; R1-R3 = OMe; R1 = R3 = H, R2 = Ac, F, cyano, CONH2, SO2NMe2, NO2, COCF3, OCF3) and the second is a series of 2-deamino derivatives I (R = H; R1 = R2 = Cl, R3 = H, R1-R3 = OMe; R1 = R3 = H, R4 = Ac), both bearing a more lipophilic substituent on the Ph ring than the CO-glutamate of classical antifolates. The compounds were tested for inhibition of purified L1210 TS and for inhibition of L1210 cell growth in vitro. Several of these nonclassical analogs approached the TS inhibitory potency of 10-propargyl-5,8-dideazafolic acid (II), a glutamate-containing TS inhibitor. I (R = NH2) were generally potent inhibitors of L1210 TS, with ED50s within the range of 0.51-11.5 μM for II. I (R = H) also exhibited significant, although diminished, TS inhibition. Both series were growth inhibitory to cells in tissue culture and this inhibition could be reversed by thymidine alone, indicating that the primary target was TS. None of the compounds was a potent inhibitor of dihydrofolate reductase. These studies indicate that the presence of the glutamate moiety in folate analogs is not an absolute requirement for potent inhibition of TS.Methyl 5-(bromomethyl)-2-nitrobenzoate(cas: 88071-91-4Formula: C9H8BrNO4) was used in this study.
Methyl 5-(bromomethyl)-2-nitrobenzoate(cas: 88071-91-4) belongs to organobromine compounds.Most of the natural organobromine compounds are produced by marine organisms , and several brominated metabolites with antibacterial , antitumor , antiviral , and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Formula: C9H8BrNO4 In contrast, terrestrial plants account only for a few bromine-containing compounds.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary