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。
Cyclic <i>Anti</i>-Azacarboxylation of 2-Alkynylanilines with Carbon Dioxide
作者:Bukeyan Miao、Suhua Li、Gen Li、Shengming Ma
DOI:10.1021/acs.orglett.6b00884
日期:2016.6.3
compounds for the synthesis of many biologically active compounds, efficiently under 1 atm of CO2. The readily available nature of the different starting materials and tolerance of variousfunctionalgroups provide vast opportunities for the efficient construction of diversified libraries for bioactive compounds listed in Figure 1. As an example, this methodology has been applied to the synthesis of Lotronex
Quadri‐Synergetic Effect for Highly Effective Carbon Dioxide Fixation and Its Application to Indoloquinolinone
作者:Suhua Li、Shengming Ma
DOI:10.1002/adsc.201200469
日期:2012.9.17
n–carboxylation of 2‐alkynylanilines with carbondioxide in the presence of dimethylzinc (ZnMe2) and cesium fluoride (CsF) for the effective synthesis of indolyl‐3‐carboxylic acids and indolodihydropyran‐2‐one is described. Through a mechanistic study, it is unveiled that the metal ions Cu2+, Zn2+, Cs+ and F− are working together for this CO2‐based highly efficient carboxylation.
Synthesis of 3-Carboxylated Indoles through a Tandem Process Involving Cyclization of 2-Ethynylanilines Followed by CO<sub>2</sub> Fixation in the Absence of Transition Metal Catalysts
In this study, a facile synthesis of 3-carboxylated indoles involving a tandem-type cyclization of 2-ethynylanilines and subsequent CO2 fixation at the 3-position of the indole ring is realized. The reaction proceeds efficiently at 65 degrees C under 10 atm of CO2, giving rise to variously substituted 3-carboxylated indoles, generally in high yields. An inorganic base, such as K2CO3, is the only reagent required, and the addition of transition metal catalysts is not necessary. The method provides a novel, simple, and promising strategy for CO2 fixation in the research field of heterocyclic chemistry.