Amino-substituted<i>para-</i>Benzoquinones as Potential Herbicides
作者:Amalyn Nain-Perez、Luiz C. A. Barbosa、Marcelo C. Picanço、Samuele Giberti、Giuseppe Forlani
DOI:10.1002/cbdv.201500340
日期:2016.8
ability of benzoquinone derivatives to interfere with the light‐driven ferricyanide reduction by isolated spinach chloroplasts was evaluated. Some substances showed a moderate effect as uncouplers, but no relationship was found between this property and their biological activity, indicating that the herbicidal effect is not associated with the inhibition of the photosynthetic electron transport chain
Antiureolytic Activity of Substituted 2,5‐Diaminobenzoquinones
作者:Amalyn Nain‐Perez、Luiz C. A. Barbosa、Diego Rodríguez‐Hernández、Yane C. C. Mota、Thamara F. Silva、Teodorico C. Ramalho、Luzia V. Modolo
DOI:10.1002/cbdv.201900503
日期:2019.12
A series of 2,5‐bis(alkyl/arylamino)‐1,4‐benzoquinones (1–12) were investigated in vitro for their potential to inhibit the activity of jack bean urease. Compounds 1–6, 8, 9, 11 and 12 effectively inhibited the jack bean urease activity by 90.8 % when tested at 5 μm, whereas 7 and 10 had relatively little effect. The IC50 for most compounds was in the nanomolar range (31.4 nm and 36.0 nm for 2 and
Metal ion promoted tautomerization and C–N bond cleavage: conversion of catechol to a p-benzoquinone derivative
作者:Pinaki Saha、Amit Saha Roy、Thomas Weyhermüller、Prasanta Ghosh
DOI:10.1039/c4cc05286b
日期:——
Metal ion promoted conversion of catechol to a p-quinone derivative is reported.
报道了金属离子促进儿茶酚转化为
带有p-醌衍生物的过程。
Fischer,O.; Hepp, Justus Liebigs Annalen der Chemie, 1891, vol. 262, p. 252
作者:Fischer,O.、Hepp
DOI:——
日期:——
Synthesis of 3-[(N-carboalkoxy)ethylamino]-indazole-dione derivatives and their biological activities on human liver carbonyl reductase
作者:Solomon Berhe、Andrew Slupe、Choice Luster、Henry A. Charlier、Don L. Warner、Leon H. Zalkow、Edward M. Burgess、Nkechi M. Enwerem、Oladapo Bakare
DOI:10.1016/j.bmc.2009.11.011
日期:2010.1
A series of indazole-dione derivatives were synthesized by the 1,3-dipolar cycloaddition reaction of appropriate substituted benzoquinones or naphthoquinones and N-carboalkoxyamino diazopropane derivatives. These compounds were evaluated for their effects on human carbonyl reductase. Several of the analogs were found to serve as substrates for carbonyl reductase with a wide range of catalytic efficiencies, while four analogs display inhibitory activities with IC50 values ranging from 3-5 mu M. Two of the inhibitors were studied in greater detail and were found to be noncompetitive inhibitors against both NADPH and menadione with K-I values ranging between 2 and 11 mu M. Computational studies suggest that conformation of the compounds may determine whether the indazole-diones bind productively to yield product or nonproductively to inhibit the enzyme. (C) 2009 Elsevier Ltd. All rights reserved.