Method for covalently attaching nucleosides and/or nucleotides on surfaces and method for determining coupling yields in the synthesis of nucleotides
申请人:Stengele Klaus-Peter
公开号:US20060154256A1
公开(公告)日:2006-07-13
The present invention relates to a method for covalently attaching nucleosides and/or nucleotides on surfaces having reactive functional groups, where in a first step, the reactive functional groups are made to react with suitable derivatized nucleosides and/or nucleotides, and in a second step, they are converted with a protecting group reagent, so that a reaction product of the consecutive reaction interacts with electromagnetic radiation such that it can be quantitatively determined. The invention also relates to a method for determining the repetitive coupling yields in the synthesis of nucleotides where the free 3′ or 5′ hydroxy group of a selected nucleoside and/or nucleotide is converted with a compound of formula (I)
where L is a common suitable leaving group, the motif O—PX represents a phosphor amidite, a H-phosphonate a phosphonic acid ester, a phosphotriester, Y═O or S, N is a nucleoside or a nucleotide derivative which subsequently reacts further with a protecting group reagent and the elimination of the leaving group (L), which is subsequently further eliminated. The quantity of the leaving group (L) eliminated in step b) is quantitatively determined in the form of its anion (L
−
) by means of optical spectroscopy.
本发明涉及一种在具有反应性功能团的表面上共价连接核苷和/或核苷酸的方法。其中,在第一步中,反应性功能团与适当衍生的核苷和/或核苷酸发生反应,在第二步中,它们与保护基试剂转化,使得连续反应的反应产物与电磁辐射相互作用,从而可以定量测定。该发明还涉及一种确定核苷酸合成中重复偶联收率的方法,其中选择的核苷和/或核苷酸的自由3'或5'羟基转化为化合物(I)的形式,其中L是一种常见的适当离去基,O-PX基序列代表磷酰胺、H-膦酸酯、磷酸酯、磷酸三酯,Y=O或S,N是一个核苷或核苷酸衍生物,随后进一步与保护基试剂反应,并消除离去基(L),随后进一步消除。步骤b)中消除的离去基(L)的数量以其阴离子(L-)的形式通过光谱学定量测定。