Synthesis and in vivo biological activity of large-ringed calixarenes against Mycobacterium tuberculosis
作者:Kerry J. Goodworth、Anne-Cécile Hervé、Evangelos Stavropoulos、Gwénaelle Hervé、Isabel Casades、Alison M. Hill、Gordon G. Weingarten、Ricardo E. Tascon、M. Joseph Colston、Helen C. Hailes
DOI:10.1016/j.tet.2010.11.034
日期:2011.1
A series of large-ringed calix[6,7,8]arene analogues have been synthesised and their affect against Mycobacterium tuberculosis in vivo established. In general, when p-phenylcalixarenes and tert-butylcalixarenes were not functionalised at the lower rim, low biological activities were observed. However on going from partially to fully lower rim pegylated calixarenes the anti-mycobacterial properties improved. The addition of cyanopropoxy groups at the lower rim gave rise to low activities, whereas the addition of acetate moieties interestingly had pro-TB effects. Two upper rim sulfonated calixarenes showed promising properties. In the course of this work, a high yielding procedure to synthesise p-phenylcalix[7]arene was also established. (C) 2010 Elsevier Ltd. All rights reserved.
The selective functionalisation and difunctionalisation of p-substituted calix[6]arene and calix[8]arenes using hydrophilic moieties
作者:Gwénaëlle Hervé、Dirk Uwe Hahn、Anne-Cécile Hervé、Kerry J. Goodworth、Alison M. Hill、Helen C. Hailes
DOI:10.1039/b208649m
日期:——
Methodologies to access water soluble large ringed calixarenes in good yield using efficient synthetic procedures have been investigated. Symmetrical partial functionalisations at the lower rim are described using activated [n]ethylene glycol chains and the addition behaviour contrasted with that of bromoalkanenitriles which proceeds with no observed regioselectivity. Full functionalisations of the calixarenes bearing hydrophilic groups are then investigated and a two-step procedure established which appears to be generally applicable for the addition of different [n]ethylene glycol chains. Furthermore, difunctionalisation under different reaction conditions are described. Throughout, strategies for the characterisation of these high mass compounds are outlined.