Synthesis of amides directly from carboxylic acids and hydrazines
作者:Nivedita Bhardwaj、Nancy Tripathi、Sanjay Kumar、Shreyans K. Jain
DOI:10.1039/d3ob01268a
日期:——
method for amide bond synthesis described here utilizes carboxylic acids and hydrazines in the presence of a catalytic amount of ZnCl2. This is the first report that highlights the use of hydrazine as an amine partner for amide synthesis directly with carboxylic acids. Ammonia (gas) is the only by-product in this method. The methodology is simple and could help in the synthesis of peptides and natural
A new series of caffemide were synthesized and their antioxidant and antibacterial activities were explored. Antioxidant and antibacterial activities were measured of different structures of caffemide containing different functional groups. Anti-oxidative caffemides 1b and 1g showed significantly higher activity against different bacteria with MIC values less than 50 mu ml. These anti-oxidative and antibacterial properties of caffemides might be helpful for the treatment of secondary infections and discovery of new antibiotics. (C) 2016 Elsevier Ltd. All rights reserved.
Synthesis and structure–activity relationship analysis of caffeic acid amides as selective matrix metalloproteinase inhibitors
Four series of acidamides were synthesized, and through measurement using a fluorogenic substrate assay with human recombinant MMP-1, MMP-2 and MMP-9, compound 3f showed considerable inhibitory activities against MMP-2, MMP-9 and the best selectivity over MMP-1. Preliminary structure–activity relationship analysis indicated that caffeicacidamides with electron-donating groups at para-position of