Carbonic Anhydrase Inhibitors: Inhibition of Transmembrane, Tumor-Associated Isozyme IX, and Cytosolic Isozymes I and II with Aliphatic Sulfamates
作者:Jean-Yves Winum、Daniela Vullo、Angela Casini、Jean-Louis Montero、Andrea Scozzafava、Claudiu T. Supuran
DOI:10.1021/jm030911u
日期:2003.12.1
aliphatic sulfamates and related derivatives incorporating cyclic/polycyclic (steroidal) moieties in their molecules has been synthesized and assayed as inhibitors of the zinc enzyme carbonic anhydrase (CA) and, more precisely, of the cytosolic isozymes CA I and II and the transmembrane, tumor-associated isozyme CA IX. The most potent CA I inhibitor was n-tetradecyl sulfamate and some (substituted)benzyl/phenethyl
Analyzing Site Selectivity in Rh<sub>2</sub>(esp)<sub>2</sub>-Catalyzed Intermolecular C–H Amination Reactions
作者:Elizabeth N. Bess、Ryan J. DeLuca、Daniel J. Tindall、Martins S. Oderinde、Jennifer L. Roizen、J. Du Bois、Matthew S. Sigman
DOI:10.1021/ja5015508
日期:2014.4.16
Predicting site selectivity in C–H bond oxidation reactions involving heteroatom transfer is challenged by the small energetic differences between disparate bond types and the subtle interplay of steric and electronic effects that influence reactivity. Herein, the factorsgoverningselective Rh2(esp)2-catalyzed C–H amination of isoamylbenzene derivatives are investigated, where modification to both
Ground state structures of sulfate monoesters and sulfamates reveal similar reaction coordinates for sulfuryl and sulfamyl transfer
作者:Emma Denehy、Jonathan M. White、Spencer J. Williams
DOI:10.1039/b513712h
日期:——
Structure/reactivity and structure/structure correlations of 5 sulfate monoesters and 11 sulfamate esters determined by low temperature X-ray crystallography reveal similar ground state deformations that suggest similar reaction coordinates for sulfuryl and sulfamyl group transfer.
Self‐Supported Heterogeneous Dirhodium(II) Catalyst for Nitrene and Carbene Transfer Reactions
作者:Vanaparthi Satheesh、Indunil Alahakoon、Kendra K. Shrestha、Livina C. Iheme、Michal Marszewski、Michael C. Young
DOI:10.1002/ejoc.202301114
日期:2024.2.26
self-supported Rh2A4 species has been prepared by reductive ligation of RhCl3 with adamantane-1,3-dicarboxylic acid. The catalyst has been demonstrated to be suitable for a range of nitrenetransferreactions, while also being suitable for carbenetransfer. Importantly, the catalyst can be made in a one-pot two step procedure and used directly, as well as being reusable.
通过RhCl 3与金刚烷-1,3-二羧酸的还原连接制备了一种新的自支撑Rh 2 A 4物种。该催化剂已被证明适用于一系列氮烯转移反应,同时也适用于卡宾转移。重要的是,该催化剂可以通过一锅两步程序制备并直接使用,并且可以重复使用。
Synthesis and Structure of Hypervalent Diacetoxybromobenzene and Aziridination of Olefins with Imino-λ<sup>3</sup>-bromane Generated in Situ under Metal-Free Conditions
Ligand exchange of p-CF3C6H4BrF2 with acetoxy groups using AcOH and Ac2O affords (diacetoxybromo)benzene in a high yield, which undergoes azirldination of alkenes In the presence of TfNH2 and sulfamate esters in one pot under mild conditions. The azirldination with TfNH2 proceeds stereospecifically with retention of stereochemistry of olefins at room temperature using limiting amounts of olefins under transition-metal-free conditions. The one-pot aziridination procedure using sulfamate esters can be applied to the Intramolecular versions.