Synthesis of Nucleoside Di- and Triphosphates and Dinucleoside Polyphosphates with <i>cyclo</i>Sal-Nucleotides
作者:Svenja Warnecke、Chris Meier
DOI:10.1021/jo802348h
日期:2009.4.17
A new and efficient method for the synthesis of nucleoside di- and triphosphates as well as dinucleoside polyphosphates (NpnN′) is described. 5-Acceptor-substituted (5-nitro and 5-chloro) cycloSal-nucleotides are used as starting material that were reacted with a variety of phosphate nucleophiles as pyrophosphate or nucleotides to the corresponding products in short times and very good yields. After
描述了一种合成核苷二磷酸和三磷酸以及二核苷多磷酸(Np n N')的新的有效方法。5-受体取代的(5-硝基和5-氯)环Sal核苷酸被用作起始原料,可与各种磷酸盐亲核试剂(如焦磷酸盐或核苷酸)在短时间内以非常高的收率反应成相应的产物。在消耗了起始的环式Sal-磷酸三酯之后,首先将保护基团裂解,最后通过RP柱色谱分离产物。给出了在天然核苷中发现的所有五个嘧啶和嘌呤碱基以及一个非天然嘧啶碱基的实例,以证明该方法可以普遍应用。
Novel fluorescent labelled affinity probes for diadenosine-5′,5‴-P1,P4-tetraphosphate (Ap4A)-binding studies
作者:Michael Wright、Andrew D. Miller
DOI:10.1016/j.bmcl.2005.10.098
日期:2006.2
Tandem synthetic-biosynthetic procedures were used to prepare two novel fluorescent labelled affinity probes for diadenosine-5',5"'-P-1,P-4-tetraphosphate (Ap(4)A)-binding studies. These compounds (dial-mant-Ap(4)A and azido-mant-Ap(4)A) are shown to clearly distinguish known ANA-binding proteins from Escherichia coli (LysU and GroEL) and a variety of other control proteins. Successful labelling of chaperonin GroEL appears to be allosteric with respect to the well-characterized adenosine 5'-triphosphate (ATP)-binding site, suggesting that GroEL possesses a distinct ANA-binding site. (c) 2005 Elsevier Ltd. All rights reserved.