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.
Synthesis and biological activities of novel trifluoromethylpyridine amide derivatives containing sulfur moieties
作者:S. X. Guo、F. He、A. L. Dai、R. F. Zhang、S. H. Chen、J. Wu
DOI:10.1039/d0ra07301f
日期:——
A series of trifluoromethylpyridine amide derivativescontaining sulfur moieties (thioether, sulfone and sulfoxide) was designed and synthesized. Their antibacterial activities against Xanthomonas oryzae pv. oryzae (Xoo), Ralstonia solanacearum (R. solanacearum) and insecticidal activities against P. xylostella were evaluated. Notably, the half-maximal effective concentration (EC50) value of sulfone-containing
设计并合成了一系列含硫基团(硫醚、砜和亚砜)的三氟甲基吡啶酰胺衍生物。它们对米黄单胞菌(Xanthomonas oryzae pv. ) 的抗菌活性。评估了米曲霉( Xoo )、青枯雷尔斯顿菌( R. solanacearum ) 和针对小菜蛾的杀虫活性。值得注意的是,含砜化合物F10相对于Xoo的半最大有效浓度(EC 50 )值为83 mg L -1,优于商业噻二唑铜(97 mg L -1)和双噻唑(112 mg L -1 ) 。 −1 )。含硫醚化合物E1、E3、E5、E6、E10、E11和E13对青枯菌表现出更高的活性,EC 50值为40至78 mg L -1,远低于噻二唑铜(87 mg L -1)和双噻唑(124 mg L -1)。一般来说,大多数含砜化合物和含亚砜化合物对Xoo表现出比相应的含硫醚化合物更高的活性,但大多数含硫醚化合物对青枯菌具有更高的抗菌活性。此外,标题化合物E
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.
A new strategy for the synthesis of β-benzylmercaptoethylamine derivatives
作者:Subrata Ghosh、Gregory P. Tochtrop
DOI:10.1016/j.tetlet.2009.01.133
日期:2009.4
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.