Synthesis and Evaluation of Cryptolepine Analogues for Their Potential as New Antimalarial Agents
作者:Colin W. Wright、Jonathan Addae-Kyereme、Anthony G. Breen、John E. Brown、Marlene F. Cox、Simon L. Croft、Yaman Gökçek、Howard Kendrick、Roger M. Phillips、Pamela L. Pollet
DOI:10.1021/jm010929+
日期:2001.9.1
The indoloquinoline alkaloid cryptolepine 1 has potent in vitro antiplasmodial activity, but it is also a DNA intercalator with cytotoxic properties. We have shown that the antiplasmodial mechanism of 1 is likely to be due, at least in part, to a chloroquine-like action that does not depend on intercalation into DNA. A number of substituted analogues of 1 have been prepared that have potent activities
Identification of 3-phenylaminoquinolinium and 3-phenylaminopyridinium salts as new agents against opportunistic fungal pathogens
作者:Tryphon K. Mazu、Jagan R. Etukala、Xue Y. Zhu、Melissa R. Jacob、Shabana I. Khan、Larry A. Walker、Seth Y. Ablordeppey
DOI:10.1016/j.bmc.2010.10.065
日期:2011.1
Previous studies on the indoloquinoline alkaloid, cryptolepine (2), revealed that it has antii-nfective properties among other activities. Using Structure-activity relationship (SAR) techniques, several ring-opened analogs of cryptolepine (3-phenylaminopyridinium and 3-phenylaminoquinolinium derivatives) were designed to improve the potency and lower the cytotoxicity shown by several of the precursor agents. Results indicate that these ring-opened analogs constitute new anti-infective agents with over a 100-fold potency and several fold lower cytotoxicity than cryptolepine from which they are derived. Published by Elsevier Ltd.