Synthesis of Photophore and Fluorophore Modified O-Benzylserine Derivatives
摘要:
O-Benzylation of serine is one of the important protection methods for solid phase peptide synthesis. The utilities of the protection group may be indicated that chemical modifications for O-benzylserine will be utilized to make functional peptides on solid phase synthesis. Detailed studies for effective synthesis of photoreactive and fluorophore containing O-benzylserine derivatives without racemization were reported.
Asymmetric synthesis of 3-azide-4-fluoro-<scp>l</scp>-phenylalanine
作者:Masaatsu Adachi、Mado Nakajima、Minoru Isobe
DOI:10.1080/09168451.2014.997185
日期:2015.5.4
The asymmetric synthesis of N-Fmoc-protected 3-azide-4-fluoro-l-phenylalanine as a photoactive phenylalanineanalog has been achieved by Schöllkopf's alkylation.
detection of halide anions, with the Binol moiety acting as the CD signalling unit. The macrocycle is conveniently synthesized using CuAAC ‘click’ reactions in the cyclization step; this methodology installs 1,2,3-triazole moieties within the macrocyclic backbone, able to directionally bind anions by means of CH⋯X– hydrogen bonds. 1H NMR complexation studies in CDCl3 reveal weak binding to halide and aliphatic
我们描述了一种用于检测卤化物阴离子的大环手性传感器,其中Binol部分充当CD信号单元。在环化步骤中,使用CuAAC“点击”反应可方便地合成大环;这种方法在大环骨架中安装了1,2,3-三唑部分,能够通过CH⋯X –氢键定向结合阴离子。CDCl 3中的1 H NMR络合研究表明与卤化物和脂肪族羧酸根阴离子的结合较弱。但是,卤化物阴离子保留在大环腔中时,能够触发大的手性反应,该反应来自与Binol部分的空间相互作用,从而改变了其二面角,从而调节了其特征性CD标记。
Design, syntheses and evaluation of 4-oxo-5-cyano thiouracils as SecA inhibitors
作者:Arpana S. Chaudhary、Jinshan Jin、Weixuan Chen、Phang C. Tai、Binghe Wang
DOI:10.1016/j.bmc.2014.11.017
日期:2015.1
Protein translocation is essential for bacterial survival and the most important translocation mechanism is the secretion (Sec) pathway in which SecA is a central core driving force. Thus targeting SecA is a promising strategy for developing novel antibacterial therapeutics. Herein, we report the syntheses and evaluation of a series of nearly 60 4-oxo-5-cyano thiouracil derivatives based upon our previously reported core pyrimidine structure. Introduction of polar group such as -N-3 and linker groups such as -CH2-O- enhanced the potency several fold. Apart from being potential antibacterial agents, these inhibitors can be indispensable tools for biologists to probe the mechanism of protein translocation via the SecA machinery in bacteria. Published by Elsevier Ltd.
Mornet, Rene; Leonard, Nelson J.; Theiler, Jane B., Journal of the Chemical Society. Perkin transactions I, 1984, # 5, p. 879 - 885
作者:Mornet, Rene、Leonard, Nelson J.、Theiler, Jane B.、Doree, Marcel
DOI:——
日期:——
The design and synthesis of YC-1 analogues as probes for soluble guanylate cyclase
作者:Kirk W. Hering、Jennifer D. Artz、William H. Pearson、Michael A. Marletta
DOI:10.1016/j.bmcl.2005.10.093
日期:2006.2
Soluble guanylate cyclase (sGC) is highly activated in the presence of both YC-1 (1-benzyl-3-(5'-hydroxymethyl-2'-furyl)indazole) and CO. In this report, the design, synthesis, and activity (i.e., sGC activation) of photolabile analogues of 3-(5'-hydroxymethyl-2'-furyl)-1-benzylindazole (YC-1) are presented. Initial results with 6-azido-3-(5'-hydroxymethyl-2-furyl)-1-benzylindazole led to the synthesis of a tritium-labeled analogue. When photoactivated, this analogue labeled the alpha-subunit of sGC. (c) 2005 Elsevier Ltd. All rights reserved.