The triethylborane-induced solid-phase radicalreaction was studied. The solid-phase radicalreaction of oxime ether anchored to Wang resin proceeded smoothly to give the α-amino acid derivatives. The carbon–carbon bond-forming radicalreaction of TentaGel OH resin-bound glyoxylic oxime ether proceeded even in aqueous media.
have developed a novel synthetic route to nitrogen-containing heterocycles via radical addition–ionic cyclization reaction. Treatment of oxime ethers carrying the tosyloxy group with Et3B and alkyl iodide in the presence of Lewis acid gave the substituted pyrrolidines and piperidines. The reaction of oxime ethers carrying the methoxycarbonyl group proceeded under the same conditions to give the amino
Carbonic anhydrase and matrix metalloproteinase inhibitors. Inhibition of human tumor-associated isozymes IX and cytosolic isozyme I and II with sulfonylated hydroxamates
作者:Elisa Nuti、Elisabetta Orlandini、Susanna Nencetti、Armando Rossello、Alessio Innocenti、Andrea Scozzafava、Claudiu T. Supuran
DOI:10.1016/j.bmc.2007.01.023
日期:2007.3
A series of sulfonylatedhydroxamates were synthesized and evaluated as dual inhibitors of both human carbonicanhydrases (hCAs) and matrixmetalloproteinases (MMPs), two metalloenzyme families involved in carcinogenesis and tumor invasion processes. The new derivatives were tested on three CAisozymes, the cytosolic isozymesI and II, and the transmembrane, tumor-associated isozyme IX, and also on
The present invention provides methods, compounds, and kits useful in the analysis of reaction products and components of reaction mixtures, and in certain embodiments for the rapid and simultaneous determination of enantiomeric ratios, percent conversions, and absolute configurations.
between oxime ester and benzothiazole is described, which involves C–C bond cleavage of oxime ester via a single-electron transfer process. This iron catalytic system performed in water under mild reaction conditions offers a streamlined strategy to the construction of alkyl nitrile substituted benzothiazole derivatives. Application of this strategy for the synthesis of some key important compounds
描述了肟酯和苯并噻唑之间的 Fe 催化偶联反应,该反应涉及通过单电子转移过程使肟酯的 C-C 键断裂。这种在温和反应条件下在水中进行的铁催化体系为构建烷基腈取代的苯并噻唑衍生物提供了一种简化的策略。还报道了该策略在合成一些关键重要化合物(包括 4-杂环-3-芳基丁酸)中的应用。