[EN] MODIFIED CYTOSINE POLYNUCLEOTIDE OLIGOMERS AND METHODS<br/>[FR] OLIGOMÈRES POLYNUCLÉOTIDIQUES DE CYTOSINE MODIFIÉE ET PROCÉDÉS CORRESPONDANTS
申请人:CEPHEID
公开号:WO2015153510A1
公开(公告)日:2015-10-08
Disclosed are modified cytosine bases that provide enhanced base-pairing affinity for guanine bases in polynucleotide hybridization complexes. Also disclosed are polynucleotide oligomers, polynucleotide hybridization complexes that comprise such modified cytosine bases. Also disclosed are various methods of use. For example, in some embodiments, modified polynucleotide oligomers disclosed herein can be used as primers and probes for nucleic acid amplification and/or detection.
(C−O) bond in alkyl ethers could simplify chemical syntheses through the elaboration of these robust, readily available precursors. Here we report that dibromoboranes react with alkyl ethers in the presence of a nickel catalyst and zinc reductant to insert boron into the C−O bond. Subsequent reactivity can effect oxygen-to-nitrogen substitution or one-carbon homologation of cyclic ethers and more broadly
chloride anion and the trimethylsilyl cation gives the corresponding methoxy-substituted α,n-didehydrotoluenes (α,n-MeO-DHTs). The rate of desilylation is evaluated through the competition with arylation via phenyl cation (ca. 10(8) s(-1)). α,2-MeO- and α,4-MeO-DHTs show a purely radical behavior (H abstraction from the solvent, methanol), while α,3-MeO-DHT shows mainly a ionic chemistry, as when the parent
intramolecular dehydration, involving the primary alcohols obtained and the enolic oxygen of the rings, promoted by Amberlyst 15 in boiling toluene, the new heterocycles 2,3,4,5-tetrahydro-6H-oxepino[3,2-c]pyran-6-one (3) and [1]benzopyran-6-ones ba,c were obtained in fair yields.
通过4-羟基-2-吡喃酮和4-羟基香豆素的一些烯烃衍生物的抗马尔科夫尼科水合,然后进行区域选择性分子内脱水,其中涉及得到的伯醇和由Amberlyst促进的环的烯醇氧15在沸腾的甲苯中,新的杂环2,3,4,5-四氢-6- ħ恶庚因并[3,2- c ^ ]吡喃-6-酮(3)和苯并吡喃-6-酮[1] BA,C获得以合理的收益率。
[EN] MODIFIED THYMINE POLYNUCLEOTIDE OLIGOMERS AND METHODS<br/>[FR] OLIGOMÈRES POLYNUCLÉOTIDIQUES À BASES THYMINE MODIFIÉES ET PROCÉDÉS ASSOCIÉS
申请人:CEPHEID
公开号:WO2015153496A1
公开(公告)日:2015-10-08
Disclosed are modified thymine bases that provide enhanced base-pairing affinity for adenine or 2,6-diaminopurine bases in polynucleotide hybridization complexes. Also disclosed are polynucleotide oligomers, polynucleotide hybridization complexes that comprise such modified thymine bases. Also disclosed are various methods of use. For example, in some embodiments, modified polynucleotide oligomers disclosed herein can be used as primers and probes for nucleic acid amplification and/or detection.