Direct Synthesis of Acyl Azides
from Carboxylic Acids by the Combination of Trichloroacetonitrile,
Triphenylphosphine and Sodium Azide
作者:Doo Jang、Joong-Gon Kim
DOI:10.1055/s-2008-1077979
日期:——
Various carboxylic acids were converted into acyl azides in excellent yields by treating with trichloroacetonitrile, triphenylphosphine and sodiumazide at room temperature. The reaction was applicable to the preparation of dipeptide without rearrangement.
Design, synthesis and molecular docking of amide and urea derivatives as Escherichia coli PDHc-E1 inhibitors
作者:Jun-Bo He、Yan-Liang Ren、Qiu-Shuang Sun、Ge-Yun You、Li Zhang、Peng Zou、Ling-Ling Feng、Jian Wan、Hong-Wu He
DOI:10.1016/j.bmc.2014.04.003
日期:2014.6
By targeting the ThDP binding site of Escherichia coli PDHc-E1, two new 'open-chain' classes of E. coli PDHc-E1 inhibitors, amide and urea derivatives, were designed, synthesized, and evaluated. The amide derivatives of compound 6d, with 4-NO2 in the benzene ring, showed the most potent inhibition of E. coli PDHc-E1. The urea derivatives displayed more potent inhibitory activity than the corresponding amide derivatives with the same substituent. Molecular docking studies confirmed that the urea derivatives have more potency due to the two hydrogen bonds formed by two NH of urea with Glu522. The docking results also indicate it might help us to design more efficient PDHc-E1 inhibitors that could interact with Glu522. (C) 2014 Elsevier Ltd. All rights reserved.
3,4,5-Trifluorobenzeneboronic acid: a mild and versatile catalyst for the one-pot synthesis of acyl azides from carboxylic acids
作者:R.H. Tale、K.M. Patil
DOI:10.1016/s0040-4039(02)02256-6
日期:2002.12
Acyloxyboron intermediates generated from carboxylic acids and 3,4,5-trifluorobenzeneboronic acid react with sodium azide to furnish the corresponding acyl azides in moderate to good yields. (C) 2002 Elsevier Science Ltd. All rights reserved.