Chemical Modifications on 4-Arylpiperazine-Ethyl Carboxamide Derivatives Differentially Modulate Affinity for 5-HT1A, D4.2, and α2A Receptors: Synthesis and In Vitro Radioligand Binding Studies
Benzyne‐Induced Ring Opening Reactions of DABCO: Synthesis of 1,4‐Disubstituted Piperazines and Piperidines
作者:Jeongseob Seo、Daegeun Kim、Haye Min Ko
DOI:10.1002/adsc.202000375
日期:2020.7.16
strategies for its synthesis to date have required multistep methods and have been very limited, such as the use of SNAr‐type reactions. Herein, we describe a synthetic methodology employing benzynes, 1,4‐diazabicyclo(2.2.2)octane (DABCO), and nitrogen nucleophiles to access these privileged organic compounds. The established protocol proved to be a transition‐metal‐free, mild reaction that proceeded via
2-(4-苯基哌嗪-1-基)乙-1-胺支架是结构上重要的基序,在药物和药物化学中经常出现。尽管该部分具有重要意义,但迄今为止,其合成的一般策略仍需要多步方法,并且非常局限,例如使用S N Ar型反应。在这里,我们描述了一种合成方法,该方法使用苯炔,1,4-二氮杂双环(2.2.2)辛烷(DABCO)和氮亲核试剂来访问这些特权有机化合物。业已证明的既定规程是无过渡金属的轻度反应,其反应是通过由苯甲酸和DABCO形成的季铵盐进行的。
Samant; Kulkarni, Journal of the Indian Chemical Society, 1981, vol. 58, # 7, p. 692 - 694
作者:Samant、Kulkarni
DOI:——
日期:——
Synthesis and biological evaluation of oxazole derivatives as T-type calcium channel blockers
作者:Jie Eun Lee、Hun Yeong Koh、Seon Hee Seo、Yi Yeon Baek、Hyewhon Rhim、Yong Seo Cho、Hyunah Choo、Ae Nim Pae
DOI:10.1016/j.bmcl.2010.05.030
日期:2010.7
T-type calcium channel is one of therapeutic targets for the treatment of cardiovascular diseases and neuropathic pain. In this study, as a part of our ongoing efforts to develop potent T-type calcium channel blockers, we designed oxazole derivatives substituted with arylpiperazinylalkylamines. The oxazoles were synthesized in a convenient convergent synthetic method, and biologically evaluated against alpha(1G) (Ca(V)3.1) T-type calcium channel. Among total 41 oxazole compounds synthesized, the most active one was the compound 10-35 with an IC(50) value of 0.65 mu M, which is comparable with that of mibefradil. (C) 2010 Elsevier Ltd. All rights reserved.
SAMANT S. D.; KULKARNI R. A., J. INDIAN CHEM. SOC., 1979, 56, NO 10, 1002-1005