Utilization of the 1,2,5-thiadiazolidin-3-one 1,1 dioxide scaffold in the design of potent inhibitors of serine proteases: SAR studies using carboxylates
作者:Rongze Kuang、Jeffrey B. Epp、Sumei Ruan、Lee S. Chong、Radhika Venkataraman、Juan Tu、Shu He、Tien M. Truong、William C. Groutas
DOI:10.1016/s0968-0896(00)00038-9
日期:2000.5
A series of carboxylatederivatives based on the 1,2,5-thiadiazolidin-3-one 1,1 dioxide and isothiazolidin-3-one 1,1 dioxide scaffolds has been synthesized and the inhibitory profile of these compounds toward humanleukocyteelastase (HLE), cathepsin G (Cat G) and proteinase 3 (PR 3) was then determined. Most of the compounds were found to be potent, time-dependent inhibitors of elastase, with some
Pharmaceutical compositions containing acrylic acid derivatives and their use in the medicine
申请人:RICHTER GEDEON VEGYESZETI GYAR R.T.
公开号:EP0408108A2
公开(公告)日:1991-01-16
Known acrylic acid derivatives of formula
wherein
n is an integer of from 0 to 2,
R represents a hydrogen, an alkaline or an alkaline earth metal atom, or a C₁₋₄alkyl-group, and
R¹ represents a hydrogen or a halogen atom or a C₁₋₄-alkyl, a C₁₋₄alkoxy or a nitro group have useful pharmaceutical activities, in particular cytoprotective and optionally antiulcer activities. They can be used in the treatment and prevention of ulceration in the digestive tract of mammals, inclusive men.
[EN] CARBON MONOXIDE-RELEASING MOLECULES TRIGGERED BY PHYSIOLOGICAL STIMULI<br/>[FR] MOLÉCULES À LIBÉRATION DE MONOXYDE DE CARBONE DÉCLENCHÉE PAR DES STIMULI PHYSIOLOGIQUES
申请人:UNIV GEORGIA STATE RES FOUND
公开号:WO2019032879A1
公开(公告)日:2019-02-14
The present invention generally relates to carbon monoxide releasing compounds and compositions, and their use as carbon monoxide prodrugs.
Direct Synthesis of Esters from Alkylarenes and Carboxylic Acids: The C–H Bond Dehydroesterification
作者:Jin Zhang、Jianghan Cao、Jiabin Zhou、Jie Zhang、Yinglin Zhao、Zhida Zhang、Renhua Liu
DOI:10.1021/acs.joc.3c00752
日期:2023.7.7
directly esterified by carboxylic acids to produce benzyl esters in high yields is reported. This reaction is catalyzed by Pd nanoparticles (NPs) on N-doped carbon (CN) composites based on a carbonizing Al-MIL-101(NH2) material, and no oxidants or hydrogen acceptors are required. Use of o-alkylbenzoic acids as substrates leads to phthalides, whereas with carboxylic acids and alkylarenes as the feedstock
在此,报道了烷基芳烃的苄基C-H键被羧酸直接酯化以高产率生产苄基酯的反应。该反应由基于碳化Al-MIL-101(NH 2 )材料的N掺杂碳(CN)复合材料上的Pd纳米颗粒(NP)催化,并且不需要氧化剂或氢受体。使用o-烷基苯甲酸作为底物产生苯并呋喃酮,而以羧酸和烷基芳烃作为原料,反应产生苄基酯。这些使用容易获得的烷基芳烃代替卤化苄或苯甲醇作为原料一步合成苄基酯而无需氧化剂的反应本质上是原子效率和步骤效率的。制备了 CN 复合材料和 CN 负载的 Pd NP 催化剂,并对其进行了良好的表征。所提出的机制涉及羧基和苄基的脱氢,以及通过有机钯中间体从苄基中夺氢,将苄基的 C-H 键转化为 C-O 键。动力学同位素效应 ( k H / k D= 2.77) 表明烷烃芳烃的 C(sp 3 )–H 键断裂是速率决定步骤。
A mild, inexpensive and practical oxidation of sulfides
作者:Kevin S. Webb
DOI:10.1016/s0040-4039(00)73209-6
日期:1994.5
Several sulfides have been converted to sulfoxides or sulfones in modest to excellent yields. The oxidant was oxone(R) and the reactions were performed in 12.5% aqueous acetone and buffered to pH 7.5 - 8.0 with sodium bicarbonate.