Synthesis, structure and structure–activity relationship analysis of caffeic acid amides as potential antimicrobials
摘要:
A series of caffeic acid amides 1-23 were synthesized and nine of which (13-17, 19-21 and 23) were reported for the first time. The chemical structures of these compounds were confirmed by means of H-1 NMR, ESI MS and elemental analyses. Compound 15 was determined by single-crystal X-ray diffraction analysis. All of the compounds were assayed for antibacterial (Bacillus subtilis, Escherichia coli, Pseudomonas fluorescens and Staphylococcus aureus) and antifungal (Aspergillus niger, Candida albicans and Trichophyton rubrum) activities by MTT method. Compounds 10-12, 15, 18 and 21 showed considerable antibacterial activities against B.subtilis with MICs of 795, 625, 389, 118, 312 and 155 mu g/mL, respectively. Structure-activity relationship analysts disclosed that caffeic acid amilides with electron-donating groups at p-position of benzene ring have better inhibitory activities.
Acrylamido derivatives useful as inhibitors of the mitochondrial permeability transition
申请人:Congenia S.r.l.
公开号:EP2179984A1
公开(公告)日:2010-04-28
Acrylamido derivatives useful as therapeutic agents, particularly for the prevention and/or treatment of diseases and conditions associated with the activity of the mitochondrial permeability transition pore (MPTP), such as the diseases characterized by ischemia/reperfusion, oxidative or degenerative tissue damage, are herein described. These compounds belong to the structural formula (I)
wherein R, R', R", W and a are as defined in the specification. The invention also relates to the preparation of these compounds, as well as to pharmaceutical compositions comprising them.
Strategy, Management and Health Policy Preclinical Research
战略,管理与卫生政策 临床前研究
Evaluation of caffeic acid amide analogues as anti-platelet aggregation and anti-oxidative agents
作者:Chia-Cheng Hung、Wei-Jen Tsai、Li-Ming Yang Kuo、Yao-Haur Kuo
DOI:10.1016/j.bmc.2004.11.055
日期:2005.3.1
A series of amides of caffeic acid were synthesized and evaluated for their anti-platelet and anti-oxidative activities. N-(2-Bromo-phenyl)-3-(3,4-dihydroxy-phenyl)-acrylamide (12) and N-(3-Bromo-phenyl)-3-(3,4-dihydroxy-phenyl)-acrylamide (13) exhibited potent inhibitory activity (IC50 = 5.8 and 6.7 muM, respectively) against arachidonic acid-induced (AA) platelet aggregation, comparable with invalid caffeic acid. Most of the synthesized caffeic acid anifides exhibited the promising anti-platelet aggregation in AA-induced assay and anti-oxidative activities. This study also exhibited that caffeic anilides displayed more potent anti-oxidative activity in the radical scavenging activity assay than trolox and vitamin E. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis, structure and structure–activity relationship analysis of caffeic acid amides as potential antimicrobials
A series of caffeic acid amides 1-23 were synthesized and nine of which (13-17, 19-21 and 23) were reported for the first time. The chemical structures of these compounds were confirmed by means of H-1 NMR, ESI MS and elemental analyses. Compound 15 was determined by single-crystal X-ray diffraction analysis. All of the compounds were assayed for antibacterial (Bacillus subtilis, Escherichia coli, Pseudomonas fluorescens and Staphylococcus aureus) and antifungal (Aspergillus niger, Candida albicans and Trichophyton rubrum) activities by MTT method. Compounds 10-12, 15, 18 and 21 showed considerable antibacterial activities against B.subtilis with MICs of 795, 625, 389, 118, 312 and 155 mu g/mL, respectively. Structure-activity relationship analysts disclosed that caffeic acid amilides with electron-donating groups at p-position of benzene ring have better inhibitory activities.