Substrate derived peptidic α-ketoamides as inhibitors of the malarial protease PfSUB1
摘要:
Peptidic alpha-ketoamides have been developed as inhibitors of the malarial protease PfSUB1. The design of inhibitors was based on the best known endogenous PfSUB1 substrate sequence, leading to compounds with low micromolar to submicromolar inhibitory activity. SAR studies were performed indicating the requirement of an aspartate mimicking the P-1' substituent and optimal P-1-P-4 length of the non-prime part. The importance of each of the P-1-P-4 amino acid side chains was investigated, revealing crucial interactions and size limitations. (C) 2014 Elsevier Ltd. All rights reserved.
An Efficient and Practical System for the Catalytic Oxidation of Alcohols, Aldehydes, and α,β-Unsaturated Carboxylic Acids
作者:Joseph M. Grill、James W. Ogle、Stephen A. Miller
DOI:10.1021/jo0612574
日期:2006.12.1
Upon exposure to commercial bleach (∼5% aqueous sodium hypochlorite), nickel(II) chloride or nickel(II) acetate is transformed quantitatively into an insoluble nickel species, nickel oxide hydroxide. This material consists of high surface area nanoparticles (ca. 4 nm) and is a useful heterogeneous catalyst for the oxidation of many organic compounds. The oxidation of primary alcohols to carboxylic
Catalytic oxidation of aldehydes to carboxylic acids with hydrogen peroxide as oxidant
作者:Joong-Kwon Choi、Young-Kil Chang、Sung Yeap Hong
DOI:10.1016/s0040-4039(00)82091-2
日期:1988.1
Alkyl and aryl aldehydes were catalytically oxidized to carboxylic acids in high yields with hydrogenperoxide as oxidant using benzeneseleninic acid as catalyst.
使用过氧化氢作为氧化剂,使用苯硒酸作为催化剂,将烷基和芳基醛高产率催化氧化为羧酸。
Synthesis of α,β‐ and β‐Unsaturated Acids and Hydroxy Acids by Tandem Oxidation, Epoxidation, and Hydrolysis/Hydrogenation of Bioethanol Derivatives
作者:Daniel Santhanaraj、Maria P. Ruiz、Mallik R. Komarneni、Tu Pham、Gengnan Li、Daniel E. Resasco、Jimmy Faria
DOI:10.1002/anie.202002049
日期:2020.5.4
We report a reaction platform for the synthesis of three different high-value specialty chemical buildingblocks starting from bio-ethanol, which might have an important impact in the implementation of biorefineries. First, oxidative dehydrogenation of ethanol to acetaldehyde generates an aldehyde-containing stream active for the production of C4 aldehydes via base-catalyzed aldol-condensation. Then
Efficient solution phase parallel synthesis of norstatine analogs
作者:Michael V. Voronkov、Alexander V. Gontcharov、Zhi-Min Wang、Paul F. Richardson、Hartmuth C. Kolb
DOI:10.1016/j.tet.2004.07.085
日期:2004.10
glycidic amides with various functionalized nitriles to afford norstatine analogs in a regio- and diastereoselective fashion (43–99% yield) is described. Utilizing this chemistry, a 20 membered solutionphase library was prepared in two steps featuring three points of diversity.
Biosynthesis of aspyrone, a metabolite of Aspergillus malleus. Incorporation studies with 14C- and 3H-labelled acetates and malonate
作者:R. Jeffrey Copeland、Robert A. Hill、David J. Hinchcliffe、James Staunton
DOI:10.1039/p19840001013
日期:——
Incorporationstudies with 14C-labelled acetates and malonate confirm the polyketide origin of aspyrone (1), and identify the chain starter unit. Five carbons are derived from the methyl group of acetate, and the remaining four from the carboxy group. The pattern of incorporation of tritium from [2-3H]acetate is inconsistent with a biosynthesis from aromatic precursors of the mellein type. Possibly