Synthesis and antiplasmodial activity of lycorine derivatives
摘要:
Twenty seven lycorine derivatives were prepared and evaluated for their in vitro antimalarial activity against chloroquine-sensitive strains of Plasmodium falciparum. The best antiplasmodial activities were achieved with lycorine derivatives that present free hydroxyl groups at C-1 and C-2 or esterified as acetates or isobutyrates. The double bond C-2-C-3 is also important for the activity. Concerning to the antiplasmodial activity of the secolycorines, the higher values were obtained with the replacement of the methylenedioxy moiety by hydroxyl or acetate groups and with methyl substituent attached to the nitrogen atom. (C) 2010 Elsevier Ltd. All rights reserved.
group on C-8 (A ring) were inactive; (c) oxidation of NCH 2 -7 to an amide group (B ring) caused loss of activity; (d) modification of the C/D ring junction had no effect on activity when the D ring assumed a β configuration whereas a great decrease of activity was observed when that ring assumed an α configuration; (e) selective or complete acetylation of hydroxyl groups of the C ring, epimerization
Synthesis and antiplasmodial activity of lycorine derivatives
作者:Juan C. Cedrón、David Gutiérrez、Ninoska Flores、Ángel G. Ravelo、Ana Estévez-Braun
DOI:10.1016/j.bmc.2010.05.023
日期:2010.7
Twenty seven lycorine derivatives were prepared and evaluated for their in vitro antimalarial activity against chloroquine-sensitive strains of Plasmodium falciparum. The best antiplasmodial activities were achieved with lycorine derivatives that present free hydroxyl groups at C-1 and C-2 or esterified as acetates or isobutyrates. The double bond C-2-C-3 is also important for the activity. Concerning to the antiplasmodial activity of the secolycorines, the higher values were obtained with the replacement of the methylenedioxy moiety by hydroxyl or acetate groups and with methyl substituent attached to the nitrogen atom. (C) 2010 Elsevier Ltd. All rights reserved.