Sorbitol Dehydrogenase Inhibitors (SDIs): A New Potent, Enantiomeric SDI, 4-[2-1R-Hydroxy-ethyl)-pyrimidin-4-yl]-piperazine-1-sulfonic Acid Dimethylamide
摘要:
We report here on our medicinal chemistry and pharmacology efforts to provide a potent sorbitol dehydrogenase inhibitor (SDI) as a tool to probe a recently disclosed hypothesis centered on the role of sorbitol dehydrogenase (SDH) in the second step of the polyol pathway, under conditions of high glucose flux. Starting from a weak literature lead, 2, and through newly developed structure-activity relationships, we have designed and executed an unambiguous synthesis of enantiomeric SDI, 6, which is at least 10x more potent than 2. Also, 6 potently inhibits SDH in streptozotocin-diabetic rat sciatic nerve. We have described an expedient synthesis of a key building template, 33, for future research in the SDI area that may facilitate the discovery of even more potent SDIs with longer duration of action in vivo.
Bromoporphyrins as Versatile Synthons for Modular Construction of Chiral Porphyrins: Cobalt-Catalyzed Highly Enantioselective and Diastereoselective Cyclopropanation
作者:Ying Chen、Kimberly B. Fields、X. Peter Zhang
DOI:10.1021/ja044889l
日期:2004.11.1
to be versatile synthons for modular construction of chiral porphyrins via palladium-catalyzed amidation reactions with chiral amides. The quadruple carbon-nitrogen bond formation reactions were accomplished in high yields with different chiral amide building blocks under mild conditions, forming a family of D2-symmetric chiral porphyrins. Cobalt(II) complexes of these chiral porphyrins were prepared
5,10-双(2',6'-二溴苯基)卟啉在 10 和 20 位具有各种取代基,被证明是通过钯催化的手性酰胺酰胺化反应模块化构建手性卟啉的通用合成子。在温和的条件下,使用不同的手性酰胺结构单元以高产率完成了四重碳氮键形成反应,形成了 D2 对称手性卟啉家族。这些手性卟啉的钴 (II) 配合物以高产率制备,并且在实用的一锅法(烯烃作为限制性试剂且不缓慢添加重氮试剂)下显示为高对映选择性和非对映选择性环丙烷化的活性催化剂。
Cobalt-based catalysts for the cyclization of alkenes
申请人:Zhang Peter X.
公开号:US20060030718A1
公开(公告)日:2006-02-09
Metal-ligand complexes, including cobalt-ligand complexes, such as a cobalt-porphyrin complex, and their use as catalysts in the cyclization of alkenes.