马来酰亚胺基团广泛用于生物缀合反应中,但是关于其硫醇加成和水解反应的动力学信息有限。我们制备了一系列的香豆素香豆素马来酰亚胺衍生物,它们的马来酰亚胺C═C键上的取代基不同。与β-巯基乙醇(BME)反应的基于荧光的动力学研究得出了二级速率常数(k 2),而pH值从7到9的pH速率研究得出了碱催化的水解速率常数(k OH)。通过log k 2和log k OH与电子(σ +)和空间(Es norm)C═C取代基的参数。这些相关性表明,硫醇加成反应主要对电子效应敏感,而空间效应在水解反应中占主导地位。这些机理研究为新型生物缀合反应物或荧光标记剂的设计提供了基础。
Coumarin-based fluorogenic agents and uses thereof for specific protein labelling
申请人:UNIVERSITY OF OTTAWA
公开号:US09701667B2
公开(公告)日:2017-07-11
There are provided fluorescent labelling agents comprising a dimaleimide core connected to a fluorophore, processes for preparation thereof, and uses thereof for labelling and/or detection of specific protein targets. Fluorescent labelling agents comprising a compound having the structure of Formula I, and salts thereof, are described.
COUMARIN-BASED FLUOROGENIC AGENTS AND USES THEREOF FOR SPECIFIC PROTEIN LABELLING
申请人:UNIVERSITY OF OTTAWA
公开号:US20150316557A1
公开(公告)日:2015-11-05
There are provided fluorescent labelling agents comprising a dimaleimide core connected to a fluorophore, processes for preparation thereof, and uses thereof for labelling and/or detection of specific protein targets. Fluorescent labelling agents comprising a compound having the structure of Formula I, and salts thereof, are described.
New general asymmetric synthesis of versatile .gamma.-alkylated butenolides and its application to expeditious synthesis of the chiral Geissman-Waiss lactones useful for (+)-retronecine synthesis
作者:Yoshimitsu Nagao、Wei Min Dai、Masahito Ochiai、Motoo Shiro
DOI:10.1021/jo00283a009
日期:1989.10
Roy, Bhairab Nath; Singh, Girij Pal; Lathi, Piyush Suresh, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2013, vol. 52, # 3, p. 394 - 404