介绍了吲哚-3-羧酸新系列血管紧张素 II 受体 1 拮抗剂的新型衍生物的分子设计、合成、体外和体内研究。使用 [ 125 I]-血管紧张素 II 的放射性配体结合研究显示,新的吲哚-3-羧酸衍生物对血管紧张素 II 受体(AT 1亚型)具有高纳摩尔亲和力,与氯沙坦等已知药物相当。对自发性高血压大鼠合成化合物的生物学研究表明,口服化合物可以降低血压。口服10mg/kg最大降压48mmHg,降压效果持续24小时,优于氯沙坦。
Et<sub>2</sub>Zn-Catalyzed Intramolecular Hydroamination of Alkynyl Sulfonamides and the Related Tandem Cyclization/Addition Reaction
作者:Yan Yin、Wenying Ma、Zhuo Chai、Gang Zhao
DOI:10.1021/jo070681h
日期:2007.7.1
Intramolecularhydroamination of alkynyl amides was effected by a catalytic amount of Et2Zn (20 mol %) to form indole derivatives, and a tandem cyclization/nucleophilic addition procedure involving reaction of the indole zinc salt intermediate with acid chlorides or halides was developed to provide an efficient approach to C3-substituted indole derivatives when an excess of Et2Zn (120 mol %) was used
A highly efficient method for the synthesis of indoles has been successfully developed via a CuMgAl-LDH-catalyzed intramolecular annulation reaction of 2-alkynylsulfonanilides. This CuMgAl-LDH catalyst features facile preparation, recovery, and reuse at least seven times without a marked loss in the catalytic activity, as well as the unique dual activation. Moreover, the crystal structures and Hirshfeld
Rhodium(III)-Catalyzed Cascade Cyclization/Electrophilic Amidation for the Synthesis of 3-Amidoindoles and 3-Amidofurans
作者:Zhiyong Hu、Xiaofeng Tong、Guixia Liu
DOI:10.1021/acs.orglett.6b00689
日期:2016.5.6
A rhodium(III)-catalyzed cascade cyclization/electrophilic amidation using N-pivaloyloxylamides as the electrophilic nitrogen source has been developed. This protocol provides an efficient route for the synthesis of 3-amidoindoles and 3-amidofurans under mild conditions with good functional group tolerance. The synthetic utility of this reaction has been demonstrated through the derivatization of the
A Robust, Well-Defined Homogeneous Silver(I) Catalyst for Mild Intramolecular Hydroamination of 2-Ethynylanilines Leading to Indoles
作者:James McNulty、Kunal Keskar
DOI:10.1002/ejoc.201301368
日期:2014.3
A highly efficient, chemically stable and well-definedhomogeneoussilver(I) catalyst is reported for the room temperature, intramolecularhydroamination of 2-alkynylanilines leading to indole derivatives.
terminal alkynes under mild conditions, namely in the presence of cuprous iodide (10 mol%) and a base in ethanol or 1,4‐dioxane. Further investigation reveals that palladium contaminants as low as 100 ppb are responsible for these successful couplings. It is worth noting that simple aliphatic substituted terminal alkynes could be tolerated to smoothly produce indole and benzo[b]furan derivatives.
在温和的条件下,即在碘化亚铜(10摩尔%)和乙醇碱存在下,通过2-碘苯胺衍生物和2-碘酚与末端炔烃的反应,可以高产率获得吲哚和苯并[ b ]呋喃。或1,4-二恶烷。进一步的研究表明,低至100 ppb的钯污染物是这些成功偶联的原因。值得注意的是,可以容忍简单的脂族取代的末端炔烃,以平稳地生产吲哚和苯并[ b ]呋喃衍生物。