SUBSTITUTED 2-ACETAMIDO-5-ARYL-1,2,4-TRIAZOLONES AND USE THEREOF
申请人:Brüggemeier Ulf
公开号:US20100261771A1
公开(公告)日:2010-10-14
The present application relates to new, substituted 2-acetamido-5-aryl-1,2,4-triazolones, to processes for preparing them, to their use alone or in combinations for the treatment and/or prevention of diseases and also to their use for the production of medicaments for the treatment and/or prevention of diseases, more particularly for the treatment and/or prevention of cardiovascular disorders.
Site‐Specific C(sp<sup>3</sup>)–H Aminations of Imidates and Amidines Enabled by Covalently Tethered Distonic Radical Anions
作者:Rong Zhao、Kang Fu、Yuanding Fang、Jia Zhou、Lei Shi
DOI:10.1002/anie.202008806
日期:2020.11.9
utilization of N‐centered radicals to synthesize nitrogen‐containing compounds has attracted considerable attention recently, due to their powerful reactivities and the concomitant construction of C−N bonds. However, the generation and control of N‐centered radicals remain particularly challenging. We report a tethering strategy using SOMO‐HOMO‐converted distonic radical anions for the site‐specific
Base-induced Sommelet–Hauser rearrangement of N-(α-(2-oxyethyl)branched)benzylic glycine ester-derived ammonium salts via a chelated intermediate
作者:Eiji Tayama、Kazuki Hirano、Souya Baba
DOI:10.1016/j.tet.2020.131064
日期:2020.4
formation of chelated intermediate C that stabilizes the carbanionic ylide, and the subsequent initial dearomative [2,3] sigmatropicrearrangement would be accelerated. The existence of C was supported by mechanistic experiments. This enhancement effect is not very strong or effective; however, it will expand the synthetic usefulness of ammonium yliderearrangements.
The aryl substituents at positions 4 and 6 do not exert observable electronic effects on the ring-chain tautomeric ratios of 2,4- or 2,6-diarylsubstituted-tetrahydro-1,3-oxazines. On the other hand, the electronic effect of the 2-aryl substituent is marked: in all eight series studied, the equilibria can be described by the equation log K = ϱ σ+ +log K0, where ϱ+ is the Hammett-Brown constant of the
在4和6位上的芳基取代基对2,4-或2,6-二芳基取代的-四氢-1,3-恶嗪的环链互变异构比没有可观察到的电子效应。另一方面,2-芳基取代基的电子效应是明显的:在所有研究的八个系列中,平衡均可以用等式log K = ϱσ + + log K 0来描述,其中ϱ +是哈米特-布朗= 2-芳基取代基的常数,ϱ是环系统的恒定特征(= 0.75±0.05)。
TRICYCLIC GUANIDINE DERIVATIVE
申请人:Sunovion Pharmaceuticals Inc.
公开号:US20160083400A1
公开(公告)日:2016-03-24
Disclosed are compounds useful as inhibitors of Phosphodiesterase 1 (PDE1), compositions thereof, and methods of using the same.