Synthesis and antiprotozoal activities of dicationic bis(phenoxymethyl)benzenes, bis(phenoxymethyl)naphthalenes, and bis(benzyloxy)naphthalenes
摘要:
A series of 37 dicationically substituted bis(phenoxymethyl)benzene bis(phenoxymethyl)naphthalene, and bis(benzyloxy)naphthalene analogues of pentamidine was prepared and evaluated for antiprotozoal activities and cytotoxicity in in vitro. 1,3-Bis(4-amidinophenoxymethyl)benzene (1) was the most active against Trypanosoma brucei rhodesiense (IC50 = 2.1 nM). 1,3-Bis[4-(N-isopropylamidino) phenoxymethyl]benzene (2) was most active against Plasmodium falciparum (IC50 = 3.6 nM) and displayed a selectivity index more than 50 times greater than that of pentamidine. Several other compounds displayed lower antiplasmodial IC50 values and higher selectivity indices relative to pentamidine. 1,4-Bis(4-amidinophenoxymethyl)benzene (14) was the most active against Leishmania donovani (IC50 = 1.3 mu M). Compound 2 displayed the greatest activity against T b. rhodesiense in vivo, curing three of four infected mice dosed intraperitoneally at 5 mg/kg x 4 days. (C) 2009 Elsevier Masson SAS. All rights reserved.
Synthesis and antiprotozoal activities of dicationic bis(phenoxymethyl)benzenes, bis(phenoxymethyl)naphthalenes, and bis(benzyloxy)naphthalenes
摘要:
A series of 37 dicationically substituted bis(phenoxymethyl)benzene bis(phenoxymethyl)naphthalene, and bis(benzyloxy)naphthalene analogues of pentamidine was prepared and evaluated for antiprotozoal activities and cytotoxicity in in vitro. 1,3-Bis(4-amidinophenoxymethyl)benzene (1) was the most active against Trypanosoma brucei rhodesiense (IC50 = 2.1 nM). 1,3-Bis[4-(N-isopropylamidino) phenoxymethyl]benzene (2) was most active against Plasmodium falciparum (IC50 = 3.6 nM) and displayed a selectivity index more than 50 times greater than that of pentamidine. Several other compounds displayed lower antiplasmodial IC50 values and higher selectivity indices relative to pentamidine. 1,4-Bis(4-amidinophenoxymethyl)benzene (14) was the most active against Leishmania donovani (IC50 = 1.3 mu M). Compound 2 displayed the greatest activity against T b. rhodesiense in vivo, curing three of four infected mice dosed intraperitoneally at 5 mg/kg x 4 days. (C) 2009 Elsevier Masson SAS. All rights reserved.
Synthesis and antiprotozoal activities of dicationic bis(phenoxymethyl)benzenes, bis(phenoxymethyl)naphthalenes, and bis(benzyloxy)naphthalenes
作者:Donald A. Patrick、Stanislav A. Bakunov、Svetlana M. Bakunova、E.V.K. Suresh Kumar、Heidi Chen、Susan Kilgore Jones、Tanja Wenzler、Todd Barzcz、Karl A. Werbovetz、Reto Brun、Richard R. Tidwell
DOI:10.1016/j.ejmech.2009.03.014
日期:2009.9
A series of 37 dicationically substituted bis(phenoxymethyl)benzene bis(phenoxymethyl)naphthalene, and bis(benzyloxy)naphthalene analogues of pentamidine was prepared and evaluated for antiprotozoal activities and cytotoxicity in in vitro. 1,3-Bis(4-amidinophenoxymethyl)benzene (1) was the most active against Trypanosoma brucei rhodesiense (IC50 = 2.1 nM). 1,3-Bis[4-(N-isopropylamidino) phenoxymethyl]benzene (2) was most active against Plasmodium falciparum (IC50 = 3.6 nM) and displayed a selectivity index more than 50 times greater than that of pentamidine. Several other compounds displayed lower antiplasmodial IC50 values and higher selectivity indices relative to pentamidine. 1,4-Bis(4-amidinophenoxymethyl)benzene (14) was the most active against Leishmania donovani (IC50 = 1.3 mu M). Compound 2 displayed the greatest activity against T b. rhodesiense in vivo, curing three of four infected mice dosed intraperitoneally at 5 mg/kg x 4 days. (C) 2009 Elsevier Masson SAS. All rights reserved.