[EN] CARBON MONOXIDE RELEASING NORBORNENONE COMPOUNDS<br/>[FR] COMPOSÉS DE NORBORNÉNONE LIBÉRANT DU MONOXYDE DE CARBONE
申请人:SAMMUT IVAN ANDREW
公开号:WO2017095237A1
公开(公告)日:2017-06-08
The present invention provides organic compounds which are capable of releasing carbon monoxide under physiological conditions or pH trigger, and to the use of such compounds for conditioning a cell, tissue or organ, for example, to protect against ischaemic injury during a transplant event.
9,10-Dibromo-<i>N</i>-aryl-9,10-dihydro-9,10-[3,4]epipyrroloanthracene-12,14-diones: Synthesis and Investigation of Their Effects on Carbonic Anhydrase Isozymes I, II, IX, and XII
作者:Haydar Göksu、Meryem Topal、Ali Keskin、Mehmet S. Gültekin、Murat Çelik、İlhami Gülçin、Muhammet Tanc、Claudiu T. Supuran
DOI:10.1002/ardp.201600047
日期:2016.6
N‐substituted maleimides were synthesized from maleic anhydride and primary amines. 1,4‐Dibromo‐dibenzo[e,h]bicyclo‐[2,2,2]octane‐2,3‐dicarboximide derivatives (4a–f) were prepared by the [4+2] cycloaddition reaction of dibromoanthracenes with the N‐substituted maleimide derivatives. The carbonic anhydrase (CA, EC 4.2.1.1) inhibitory effects of the new derivatives were assayed against the human (h)
N-取代的马来酰亚胺由马来酸酐和伯胺合成。1,4-二溴-二苯并[e,h]双环-[2,2,2]辛烷-2,3-二甲酰亚胺衍生物(4a-f)是通过二溴蒽与N的[4+2]环加成反应制备的取代的马来酰亚胺衍生物。针对人 (h) 同工酶 hCA I、II、IX 和 XII 测定了新衍生物的碳酸酐酶 (CA、EC 4.2.1.1) 抑制作用。所有测试的双环二甲酰亚胺衍生物都在纳摩尔范围内表现出优异的抑制作用,对 hCA I 的 Ki 值在 117.73-232.87 nM 的范围内,对 hCA II 的 Ki 值在 69.74-111.51 nM 的范围内,而它们是对 hCA IX 和 XII 的低微摩尔抑制剂。
A direct Diels–Alder reaction of chitin derived 3-acetamido-5-acetylfuran
作者:Juliana G. Pereira、João M. J. M. Ravasco、João R. Vale、Fausto Queda、Rafael F. A. Gomes
DOI:10.1039/d2gc00253a
日期:——
The Diels–Alder (DA) reaction of biomass derived furans is an emerging technology for the preparation of new molecular entities and “drop-in” commodity chemicals. In this work, we address the challenge of the direct use of electron-poor furanic platforms as dienes through the use of an unexplored chitin derived furan, 3-acetamido-5-acetylfuran (3A5AF). The 3-acetamido group promoted a remarkable increase
生物质衍生呋喃的 Diels-Alder (DA) 反应是一种新兴技术,用于制备新的分子实体和“插入式”商品化学品。在这项工作中,我们通过使用未开发的几丁质衍生的呋喃 3-acetamido-5-acetylfuran ( 3A5AF ) 来解决直接使用贫电子呋喃平台作为二烯的挑战。3-乙酰氨基基团促进了 DA 反应动力学的显着增加,允许在 50°C 下制备 7-氧代降冰片烯 (7-ONBs)。在微调反应条件、禁用逆向 DA 过程后,烯酰胺部分水解为半酰基胺是可能的。最后,还原型3A5AF的 DA 反应允许在10分钟后在水性条件下定量形成7-ONB。当然,这些是扩展几丁质衍生的3A5AF作为二烯的工具箱的第一步。
Photochemical Synthesis of S,N,O-Containing Polyheterocycles via an α-C(sp<sup>3</sup>)–H Functionalization/Radical Cyclization Cascade
作者:Shi-Yan Cheng、Jia-Bin Liao、Yu-Mei Lin、Lei Gong
DOI:10.1021/acs.orglett.3c02423
日期:2023.9.8
organophotocatalytic α-C(sp3)–H functionalization/radical cyclization cascade has been developed. This method enables the synthesis of various tricyclic heterocycles containing S, O, and N atoms with excellent site selectivity and diastereoselectivity. Mechanistic investigations have confirmed that the reaction involves photoredox-triggered C(sp3)–H cleavage followed by a radical cyclization and aromatization process
Overcoming Back Electron Transfer in the Electron Donor–Acceptor Complex-Mediated Visible Light-Driven Generation of α-Aminoalkyl Radicals from Secondary Anilines
作者:August Runemark、Henrik Sundén
DOI:10.1021/acs.joc.2c02448
日期:2023.1.6
An additive-free, visible light-driven annulation between N-aryl amino acids and maleimide to form tetrahydroquinolines (THQs) is disclosed. Photochemical activation of an electrondonor–acceptor (EDA) complex between amino acids and maleimides drives the reaction, and aerobic oxygen acts as the terminal oxidant in the net oxidative process. A range of N-aryl amino acids and maleimides have been investigated