A new strategy for the synthesis of β-benzylmercaptoethylamine derivatives
摘要:
Here, we describe a new experimental approach to the synthesis of the beta-benzylmercaptoethylamine functionality, and illustrate its synthetic utility in multi-component reactions. Although prevalent in modern organic synthesis, no general methods have been described for this functionality. Using a carefully developed LiOH-water-ethanol reaction mixture, we were able to produce a diverse collection of beta-benzylmercaptoethylamines containing a range of sensitive functional groups in excellent yields. To further illustrate their utility in molecular library synthesis, we also report the use of beta-benzylmercaptoethylamines in five different multi-component reactions. (C) 2009 Elsevier Ltd. All rights reserved.
COMPOSITIONS AND METHODS FOR INHIBITING BETA AMYLOID SECRETION
申请人:Smith Jonathan D.
公开号:US20130158112A1
公开(公告)日:2013-06-20
A pharmaceutical composition for inhibiting amyloid beta peptide in a subject includes a compound having the formula (I):
where M is selected from a substituted or unsubstituted alkyl, halo, alkoxy, aryl, cyclic, or heterocyclic group;
p is an integer from 0-3;
X
1
is a 3-9 atoms in length linker connecting A and B;
B is selected from a substituted or unsubstituted aryl, alkoxy or amine group; and
a pharmaceutically acceptable salt thereof; and a pharmaceutical carrier.
In this study, we reported the synthesis and biological characterization of a novel series of furan-carboxamide derivatives that were potent inhibitors of the influenza A H5N1 virus. The systematic structure–activity relationship (SAR) studies demonstrated that the 2,5-dimethyl-substituted heterocyclic moiety (furan or thiophene) had significant influence on the anti-influenza activity. In particular
Imidazolylalkylguanidinderivate, Verfahren zu ihrer Herstellung und diese Verbindungen enthaltende Arzneimittel
申请人:HEUMANN PHARMA GMBH & CO
公开号:EP0199845A1
公开(公告)日:1986-11-05
Es werden neue Imidazolylalkylguanidinderivate beschrieben, die aufgrund ihrer agonistischen Wirkung auf Histamin-H2-Rezeptoren sowie zum Teil wegen ihrer zusätzlichen H1-antagonistischen Rezeptoraktivität bei Erkrankungen des Herzens, bei bestimmten Formen der Hypertonie sowie bei arteriellen Verschlußkrankheiten eingesetzt werden können.
Es handelt sich um Imidazolylalkylguanidinderivate der allgemeinen Formel I:
本文描述了新的咪唑烷基胍衍生物,由于其对组胺 H2 受体的激动作用,以及部分由于其额外的 H1 拮抗受体活性,这些衍生物可用于治疗心脏病、某些形式的高血压和动脉闭塞性疾病。 这些是通式 I 的咪唑烷基胍衍生物:
Synthesis and Biological Evaluation of Analogues of a Novel Inhibitor of β-Amyloid Secretion
作者:Enakshi Chakrabarti、Subrata Ghosh、Sushabhan Sadhukhan、Lawrence Sayre、Gregory P. Tochtrop、Jonathan D. Smith
DOI:10.1021/jm100308g
日期:2010.7.22
A drug library of 17200 compounds was screened to select small molecules that inhibit the secretion of amyloid beta peptide (Am, the major component of Alzheimer disease senile plaques, from a human neuronal cell line. Twenty-nine hits were validated that decreased A beta secretion by >40% at 10 mu M, for a 0.17% hit rate. A lead hit was selected for further study based on its activity and low cytotoxicity, and it was found to inhibit A beta secretion through activation of the alpha-secretase pathway. Twenty-four commercially available and 53 synthesized analogues were analyzed for activity. Selected analogues were evaluated for biological stability by incubation with hepatoma cells and for transcellular permeability using Caco-2 cell monolayers. The analogue with the best permeability was evaluated in 2-month old amyloid precursor protein transgenic mice and found to acutely reduce cerebral A beta levels by 40% after a single iv administration.