Design, synthesis and characterization of some bioactive conjugates of curcumin with glycine, glutamic acid, valine and demethylenated piperic acid and study of their antimicrobial and antiproliferative properties
摘要:
The monoesters of curcumin, a symmetric diphenol with valine and glycine have been prepared by a novel solid phase synthesis and its diesters with valine, glutamic acid and demethylenated piperic acid have been prepared by solution phase method. The assessment of their antimicrobial and anticancer (anti proliferative) activities suggested that diesters of curcumin are relatively more active than curcumin itself due to their increased solubility, slow metabolism and better cellular uptake. Furthermore, significant observation was that monoesters of curcumin have even better antimicrobial activity than their corresponding diesters, emphasizing the role of free phenolic group. The conjugate of curcumin with demethylenated piperic acid in which methylenedioxy ring was open also shows enhanced activity than the corresponding piperic acid conjugate, emphasizing the role of free phenolics in the transport or in the binding processes. (C) 2007 Elsevier Masson SAS. All rights reserved.
Derivatives of octahydro-6,10-dioxo-6H-pyridazino [1,2-a] [1,2] diazepine-1-carboxylic acid, their preparation process and their use in the preparation of therapeutically active compounds
申请人:Aventis Pharma S.A.
公开号:US20020128473A1
公开(公告)日:2002-09-12
Novel intermediates of the formulae
1
where the substituents are defined as in the specification.
新颖的中间体,其化学式中的取代基如规范中所定义。
Derivatives of octahydro-6, 10-dioxo-6H-pyridazino [1,2-a] [1,2] diazepine-1-carboxylic acid, their preparation process and their use in the preparation of therapeutically active compounds
申请人:Aventis Pharma S.A.
公开号:US20030130269A1
公开(公告)日:2003-07-10
A compound of the formula
1
of SR configuration or a SR+SS wherein R is selected from the group consisting of hydrogen, alkyl of up to 18 carbon atoms and aryl and aralkyl of up to 18 carbon atoms and the —NH
2
is free or protected useful as intermediates.
DERIVES DE L'ACIDE OCTAHYDRO-6, 10-DIOXO-6H-PYRIDAZINO/1,2-A/ /1,2/ DIAZEPINE-1-CARBOXYLIQUE, LEUR PROCEDE DE PREPARATION ET LEUR APPLICATION A LA PREPARATION DE COMPOSES THERAPEUTIQUEMENT ACTIFS
申请人:Aventis Pharma S.A.
公开号:EP1073673B1
公开(公告)日:2007-01-10
US6548664B1
申请人:——
公开号:US6548664B1
公开(公告)日:2003-04-15
Design, synthesis and characterization of some bioactive conjugates of curcumin with glycine, glutamic acid, valine and demethylenated piperic acid and study of their antimicrobial and antiproliferative properties
作者:Shiv K. Dubey、Anuj K. Sharma、Upma Narain、Krishna Misra、Uttam Pati
DOI:10.1016/j.ejmech.2007.11.027
日期:2008.9
The monoesters of curcumin, a symmetric diphenol with valine and glycine have been prepared by a novel solid phase synthesis and its diesters with valine, glutamic acid and demethylenated piperic acid have been prepared by solution phase method. The assessment of their antimicrobial and anticancer (anti proliferative) activities suggested that diesters of curcumin are relatively more active than curcumin itself due to their increased solubility, slow metabolism and better cellular uptake. Furthermore, significant observation was that monoesters of curcumin have even better antimicrobial activity than their corresponding diesters, emphasizing the role of free phenolic group. The conjugate of curcumin with demethylenated piperic acid in which methylenedioxy ring was open also shows enhanced activity than the corresponding piperic acid conjugate, emphasizing the role of free phenolics in the transport or in the binding processes. (C) 2007 Elsevier Masson SAS. All rights reserved.