β-Arylation of Carboxamides via Iron-Catalyzed C(sp3)–H Bond Activation
摘要:
A 2,2-disubstituted propionamide bearing an 8-aminoquinolinyl group as the amide moiety can be arylated at the beta-methyl position with an organozinc reagent in the presence of an organic oxidant, a catalytic amount of an iron salt, and a biphosphine ligand at 50 degrees C. Various features of selectivity and reactivity suggest the formation of an organometallic intermediate via rate-determining C-H bond cleavage rather than a free-radical-type reaction pathway.
Discovery of β-Arrestin Biased, Orally Bioavailable, and CNS Penetrant Neurotensin Receptor 1 (NTR1) Allosteric Modulators
作者:Anthony B. Pinkerton、Satyamaheshwar Peddibhotla、Fusayo Yamamoto、Lauren M. Slosky、Yushi Bai、Patrick Maloney、Paul Hershberger、Michael P. Hedrick、Bekhi Falter、Robert J. Ardecky、Layton H. Smith、Thomas D. Y. Chung、Michael R. Jackson、Marc G. Caron、Lawrence S. Barak
DOI:10.1021/acs.jmedchem.9b00340
日期:2019.9.12
Neurotensinreceptor 1 (NTR1) is a G protein coupled receptor that is widely expressed throughout the central nervous system where it acts as a neuromodulator. Neurotensinreceptors have been implicated in a wide variety of CNS disorders, but despite extensive efforts to develop small molecule ligands there are few reports of such compounds. Herein we describe the optimization of a quinazoline based
Nickel-catalyzed directed sulfenylation of sp<sup>2</sup> and sp<sup>3</sup> C–H bonds
作者:Xiaohan Ye、Jeffrey L. Petersen、Xiaodong Shi
DOI:10.1039/c5cc01970b
日期:——
Directed sulfenylation of both sp2 and sp3 C–H bonds was achieved through nickel catalyzed directed C–S bond formation, giving the desired product in good to excellent yield (up to 90%).
通过镍催化的定向C-S键形成,实现了对sp2和sp3碳氢键的硫烯化,产率良好至优异(高达90%)。
Copper(II)/Silver(I)-Catalyzed Sequential Alkynylation and Annulation of Aliphatic Amides with Alkynyl Carboxylic Acids: Efficient Synthesis of Pyrrolidones
copper‐catalyzed alkynylation/annulation of aliphatic amides with alkynyl carboxylic acids is discussed in this paper. A broad range of easily accessible alkynyl carboxylic acids were introduced at the β‐methyl group of aliphatic amides with the assistance of an 8‐aminoquinolyl auxiliary group via decarboxylation to achieve the subsequent cyclic CNbond formation within one hour. High selectivity of β‐methyl
本文讨论了通过铜催化的脂肪族酰胺与炔基羧酸的烷基化/环化反应合成吡咯烷酮的高效方法。在8-氨基喹啉基辅助基团的帮助下,通过脱羧作用,在脂肪族酰胺的β-甲基基团上引入了一系列易于获得的炔基羧酸,以在一小时内形成随后的环状CN键。观察到β-甲基对亚甲基的选择性高,并且该催化体系扩展至亚甲基CH键的活化作用失败。在脂族酰胺的α-位置具有两个不同基团的底物会导致非对映异构体的形成1 H NMR光谱。反应后,通过用稀对甲苯磺酸处理,可以很容易地将最初生产的具有Z型构型的产品转变为具有E型构型的相应产品。这种催化串联脱羧环化提供的SP的直接官能了新的机遇3 ç H键。
3-ALKYL-4-AMIDO-BICYCLIC [4,5,0] HYDROXAMIC ACIDS AS HDAC INHIBITORS
申请人:Forma Therapeutics, Inc.
公开号:US20160222028A1
公开(公告)日:2016-08-04
The present disclosure relates to inhibitors of zinc-dependent histone deacetylases (HDACs) useful in the treatment of diseases or disorders associated with an HDAC, e.g., HDAC6, having a Formula I:
where R, L, X
1
, X
2
, X
3
, X
4
, Y
1
, Y
2
, Y
3
, and Y
4
are described herein.
[EN] COMPOUNDS AND METHODS FOR MODULATING ADENOSINE A2B RECEPTOR AND ADENOSINE A2A RECEPTOR<br/>[FR] COMPOSÉS ET PROCÉDÉS DE MODULATION DU RÉCEPTEUR A2B DE L'ADÉNOSINE ET DU RÉCEPTEUR A2A DE L'ADÉNOSINE
申请人:CORVUS PHARMACEUTICALS INC
公开号:WO2019046784A1
公开(公告)日:2019-03-07
Disclosed herein, inter alia, are compositions and methods for modulating Adenosine Receptors. In an aspect is provided a method of inhibiting Adenosine A2B Receptor activity and Adenosine A2A Receptor activity, the method including contacting the Adenosine A2B Receptor and Adenosine A2A Receptor with a compound as described herein, including embodiments.