2-(3-Nitro-2-pyridylmethyl)benzazoles were synthesized, and their photochromic properties were studied by flash photolysis. Introduction of a nitropyridyl instead of the nitrophenyl moiety into the 2-methyl group insignificantly increases the basicity of the methylene group. Nitropyridyl-substituted benzazoles give rise to three detectable photoinduced forms: the corresponding anion at pH > 10, azarnerocyanine at pH approximate to 4, and monomethinecyanine at pH approximate to 1. Irradiation of solutions of weakly basic benzoxazole and benzothiazole derivatives at pH approximate to 4 results in formation of neutral chelate structures in which the hydrogen atom is linked simultaneously to two nitrogen atoms: one in the pyridine ring, and the second, in the azole ring.
An efficient cascade methodology toward the synthesis of 2-substitutedindoles has been developed. The transformation proceeds via a palladium-catalyzed cross-coupling reaction of o-nitrobenzyl cyanides with boronic acids. The use of Fe as co-catalyst during the course of reaction employs significant enhancement in reaction rates. The developed protocol allows for the unprecedented use of arylboronic
已开发出一种用于合成 2-取代吲哚的高效级联方法。该转化通过钯催化的邻硝基苄基氰与硼酸的交叉偶联反应进行。在反应过程中使用 Fe 作为助催化剂显着提高了反应速率。开发的协议允许前所未有地使用芳基硼酸作为偶联伙伴来构建 2-取代吲哚。
Synthesis of Some Nitropyridylacetonitriles
作者:R. B. Katz、M. Voyle
DOI:10.1055/s-1989-27239
日期:——
A new synthesis of nitropyridylacetonitriles 4 has been developed, using tert-butyl cyanoacetate and the corresponding chloropyridines 2. The tert-butyl esters are removed by acid-catalyzed dealkoxycarbonylation.
Azaindolylalkylamine derivatives as 5-hydroxytryptamine-6 ligands
申请人:Wyeth
公开号:US20030171395A1
公开(公告)日:2003-09-11
The present invention provides a compound of formula I and the use thereof for the therapeutic treatment of disorders relating to or affected by the 5-HT6 receptor.
1
本发明提供了一种I式化合物及其用于治疗与5-HT6受体相关或受其影响的疾病的用途。
AZAINDOLYLALKYLAMINE DERIVATIVES AS 5-HYDROXYTRYPTAMINE-6 LIGANDS
申请人:BERNOTAS Ronald Charles
公开号:US20080114023A1
公开(公告)日:2008-05-15
The present invention provides a compound of formula I and the use thereof for the therapeutic treatment of disorders relating to or affected by the 5-HT6 receptor.
本发明提供一种公式I的化合物以及其在治疗与或受5-HT6受体影响的疾病方面的应用。
1-(2-Aminoethyl)-3-(arylsulfonyl)-1H-pyrrolopyridines are 5-HT6 receptor ligands
作者:Ronald C. Bernotas、Schuyler A. Antane、Steven E. Lenicek、Simon N. Haydar、Albert J. Robichaud、Boyd L. Harrison、Guo Ming Zhang、Deborah Smith、Joseph Coupet、Lee E. Schechter
DOI:10.1016/j.bmcl.2009.10.067
日期:2009.12
1-(2-Aminoethyl)-3-(arylsulfonyl)-1H-pyrrolopyridines were prepared. Binding assays indicated they are 5-HT6 receptor ligands, among which 6f and 6g showed high affinity for 5-HT6 receptors with K-i = 3.9 and 1.7 nM, respectively. (C) 2009 Elsevier Ltd. All rights reserved.