Essential Factors for Stabilization of the Predominant C3′-endo Conformation in Dinucleoside Phosphotriester Derivatives with Cyclonucleotide Bridge Structures at the Downstream 3′-Position
作者:Mitsuo Sekine、Osamu Kurasawa、Koh-ichiroh Shohda、Kohji Seio、Takeshi Wada
DOI:10.1002/1099-0690(200105)2001:10<1989::aid-ejoc1989>3.0.co;2-h
日期:2001.5
This paper describes the synthesis of conformationally constrained dinucleoside cyclic phosphotriester derivatives and related compounds, such as Tpc3Um (2), Tpc3dU (3), Tpc2dU (4), pc3dU (16), and pc2dU (25), where c2 and c3 refer to ethylene and propylene bridges between the 5′-phosphate of the 3′-downstream nucleoside and the 5-position of the uracil residue. These studies found that the c3 linker
本文描述了构象受限的二核苷环状磷酸三酯衍生物和相关化合物的合成,例如Tpc3Um(2),Tpc3dU(3),Tpc2dU(4),pc3dU(16)和pc2dU(25),其中c2和c3分别是乙烯和丙烯在3'-下游核苷的5'-磷酸和尿嘧啶残基的5-位之间架桥。这些研究发现,c3接头对于在C3'-内折叠中固定3'-下游核苷残基至关重要。在3'-下游核苷处2'-羟基的存在对于C3'-内切酶的稳定化也至关重要构象。合成两组非对映体寡核苷酸T 4(Tpc3Um)T 4(30)和T 4(Tpc3dU)T 4(33),并分离每种立体异构体。这些寡核苷酸的杂交能力通过熔点实验分析。