Discovery of Novel Pyrazolo[3,4-b] Pyridine Derivatives with Dual Activities of Vascular Remodeling Inhibition and Vasodilation for the Treatment of Pulmonary Arterial Hypertension
摘要:
Current pulmonary arterial hypertension (PAH) therapeutic strategies mainly focus on vascular relaxation with less emphasis on vascular remodeling, which results in poor prognosis. Hence, dual pathway regulators with vasodilation effect via soluble guanylate cyclase (sGC) stimulation and vascular remodeling regulation effect by AMP-activated protein kinase (AMPK) inhibition provide more advantages and potentialities. Herein, we designed and synthesized a series of novel pyrazolo[3,4-b] pyridine derivatives based on sGC stimulator and AMPK inhibitor scaffolds. In vitro, 2 exhibited moderate vasodilation activity and higher proliferation and migration suppressive effects compared to riociguat. In vivo, 2 significantly decreased right ventricular systolic pressure (RVSP), attenuated pulmonary artery medial thickness (PAMT), and right ventricular hypertrophy (RVH) in hypoxia-induced PAH rat models (i.g.). Given the unique advantages of significant vascular remodeling inhibition and moderate vascular relaxation based on the dual pathway regulation, we proposed 2 as a promising lead for anti-PAH drug discovery.
Zinc-promoted cyclization of tosylhydrazones and 2-(dimethylamino)malononitrile: an efficient strategy for the synthesis of substituted 1-tosyl-1H-pyrazoles
A Zn(OTf)2-promoted cyclization reaction of tosylhydrazones with 2-(dimethylamino)malononitrile has been successfully developed providing an efficient strategy for the synthesis of substituted 1-tosyl-1H-pyrazoles.
Direct synthesis of 2-substituted benzonitriles <i>via</i> alkylcyanation of arynes with <i>N</i>,<i>N</i>-disubstituted aminomalononitriles
作者:Wen Bao、Zhu-Peng Gao、Da-Ping Jin、Cao-Gen Xue、Huan Liang、Ling-Sheng Lei、Xue-Tao Xu、Kun Zhang、Shao-Hua Wang
DOI:10.1039/d0cc01591a
日期:——
An efficient alkylcyanation of in situ generated arynes by N,N-disubstituted aminomalononitriles is described, enabling the direct synthesis of 2-substituted benzonitriles.
Copper-promoted cyanation of aryl iodides with N,N-dimethyl aminomalononitrile
作者:Si-Zhan Liu、Jing Li、Cao-Gen Xue、Xue-Tao Xu、Lin-Sheng Lei、Chen-Yu Huo、Zhen Wang、Shao-Hua Wang
DOI:10.1016/j.tetlet.2020.152749
日期:2021.2
A copper-promoted cyanation of aryl iodides has been successfully developed by using N,N-dimethyl aminomalononitrile as the cyanide source with moderate toxicity and better stability. This reaction features broad substrate scope, excellent reaction yields, readily available catalyst, and simple reaction conditions.
Al(OTf)
<sub>3</sub>
‐Catalyzed Tandem Coupling Reaction between
<i>N,N</i>
‐Disubstituted Aminomalonitriles and Substituted Arenes: a Synthesis of 1‐Cyano‐bisindolylmethane Analogues
<sup>≠</sup>
A synthesis of 1‐cyano‐bisindolylmethane analogues via an Al(OTf)3‐catalyzed tandem coupling reaction between N,N‐disubstituted aminomalonitriles and substituted arenes has been developed. This method not only provides an alternative synthetic strategy for the synthesis of corresponding functional molecules, but also enriches the volume of bisarylmethanes library to facilitate related functional studies