Synthesis and biological evaluation of hydrophilic embelin derivatives
摘要:
In continuance of our search for newer anti-cancer agents we were interested on embelin, a XIAP (X-linked inhibitor of apoptosis protein) inhibitor. This natural benzoquinone bear a lipophilic chain and we report here the synthesis of hydrophilic analogues of embelin. To allow a large flexibility in the nature of the hydrophilic group, three amines with different length of carbon chain bearing a protected benzoquinone were prepared. The cytotoxic effects of these derivatives were evaluated on KB cell line. (C) 2012 Elsevier Ltd. All rights reserved.
A Biomimetic Approach to Dihydrobenzofuran Synthesis
作者:John W. Benbow、Reeti Katoch-Rouse
DOI:10.1021/jo000696e
日期:2001.7.1
precursors 10 is presented. The putative oxoniumion intermediate 17 formed by an intramolecular hydroxyl cyclization followed by dehydration is reduced in situ by an added dihydroquinone source. Good to excellent yields of cyclized products are realized in all cases except for highly electron deficient systems, and these suffer reduction prior to oxoniumion formation. All products are monomeric and
In continuance of our search for newer anti-cancer agents we were interested on embelin, a XIAP (X-linked inhibitor of apoptosis protein) inhibitor. This natural benzoquinone bear a lipophilic chain and we report here the synthesis of hydrophilic analogues of embelin. To allow a large flexibility in the nature of the hydrophilic group, three amines with different length of carbon chain bearing a protected benzoquinone were prepared. The cytotoxic effects of these derivatives were evaluated on KB cell line. (C) 2012 Elsevier Ltd. All rights reserved.