New anti-malarial peroxides with In vivo potency derived from spongean metabolites
摘要:
The structure-activity relationship of the anti-malarial substance 3 having a 6-carbomethoxymethyl-3-methoxy-1,2-dioxane structure was studied. The ester portion of the peroxide 3, showing little in vivo efficacy in malaria-infected mice in spite of the potent in vitro activity, was hydrolyzed in serum to afford an inactive free acid 4. The amide analogues (8 and 9) robust to mouse serum were disclosed to exhibit in vivo anti-malarial potency. (C) 2003 Elsevier Ltd. All rights reserved.
New anti-malarial peroxides with In vivo potency derived from spongean metabolites
摘要:
The structure-activity relationship of the anti-malarial substance 3 having a 6-carbomethoxymethyl-3-methoxy-1,2-dioxane structure was studied. The ester portion of the peroxide 3, showing little in vivo efficacy in malaria-infected mice in spite of the potent in vitro activity, was hydrolyzed in serum to afford an inactive free acid 4. The amide analogues (8 and 9) robust to mouse serum were disclosed to exhibit in vivo anti-malarial potency. (C) 2003 Elsevier Ltd. All rights reserved.
In order to study the structure-activity relationship of anti-malarial spongean peroxides, several analogues concerning with the 6-methoxyacetyl moiety and the 3-pentyl residue in methyl 2-(3-methoxy-3-pentyl-1,2-dioxan-6-yl) acetate were synthesized and evaluated for anti-malarial activity. The tert-butyl ester analogue 14 showed stability in mouse serum and a high selectivity index against the malaria parasite, Plasmodium falciparum, and the citronellyl analogue 31 exhibited the strongest in vitro antimalarial activity among them, and the imidazole analogue 25 showed desirable in vivo anti-malarial activity against P. berghei infected mice. (C) 2004 Elsevier Ltd. All rights reserved.
New anti-malarial peroxides with In vivo potency derived from spongean metabolites
作者:Nobutoshi Murakami、Motoyuki Kawanishi、Huq Mohammad Mostaqul、Jie Li、Sawako Itagaki、Toshihiro Horii、Motomasa Kobayashi
DOI:10.1016/j.bmcl.2003.08.073
日期:2003.11
The structure-activity relationship of the anti-malarial substance 3 having a 6-carbomethoxymethyl-3-methoxy-1,2-dioxane structure was studied. The ester portion of the peroxide 3, showing little in vivo efficacy in malaria-infected mice in spite of the potent in vitro activity, was hydrolyzed in serum to afford an inactive free acid 4. The amide analogues (8 and 9) robust to mouse serum were disclosed to exhibit in vivo anti-malarial potency. (C) 2003 Elsevier Ltd. All rights reserved.