Hybridization between “Six-Membered” Nucleic Acids: RNA as a Universal Information System
摘要:
[GRAPHICS]Within the polyA:polyT recognition system, cross-pairing between several nucleic acids with a phosphorylated six-membered carbohydrate (mimic) as repeating unit in the backbone structure has been observed. All investigated nucleic acids (except for beta -homo-DNA) hybridize with RNA, leaving RNA as a versatile biopolymer for informational transfer.
Synthesis and Antiviral Activity of the α-Analogues of 1,5-Anhydrohexitol Nucleosides (1,5-Anhydro-2,3-dideoxy-d-ribohexitol Nucleosides)
摘要:
1,5-Anhydro-2,3-dideoxy-D-ribohexitol nucleosides were synthesized starting from 4,6-di-O-benzyl-1,5-di-O-pivaloyl-3-deoxy-D-glucitol using a ring closure procedure. The target nucleoside adopts a C-4(1) conformation as also demonstrated for the corresponding 1,5-anhydrohexitol nucleosides with beta-configuration of the base-substituted carbon atom. The cytosine congener demonstrated a moderate but selective activity against Herpes simplex virus types I and 2.
Hybridization between “Six-Membered” Nucleic Acids: RNA as a Universal Information System
作者:Luc Kerremans、Guy Schepers、Jef Rozenski、Roger Busson、Arthur Van Aerschot、Piet Herdewijn
DOI:10.1021/ol016183r
日期:2001.12.1
[GRAPHICS]Within the polyA:polyT recognition system, cross-pairing between several nucleic acids with a phosphorylated six-membered carbohydrate (mimic) as repeating unit in the backbone structure has been observed. All investigated nucleic acids (except for beta -homo-DNA) hybridize with RNA, leaving RNA as a versatile biopolymer for informational transfer.
Synthesis and Antiviral Activity of the α-Analogues of 1,5-Anhydrohexitol Nucleosides (1,5-Anhydro-2,3-dideoxy-<scp>d</scp>-ribohexitol Nucleosides)
作者:Nafizal Hossain、Jef Rozenski、Erik De Clercq、Piet Herdewijn
DOI:10.1021/jo961982m
日期:1997.4.1
1,5-Anhydro-2,3-dideoxy-D-ribohexitol nucleosides were synthesized starting from 4,6-di-O-benzyl-1,5-di-O-pivaloyl-3-deoxy-D-glucitol using a ring closure procedure. The target nucleoside adopts a C-4(1) conformation as also demonstrated for the corresponding 1,5-anhydrohexitol nucleosides with beta-configuration of the base-substituted carbon atom. The cytosine congener demonstrated a moderate but selective activity against Herpes simplex virus types I and 2.
1′,5′-Anhydro-<scp>l</scp>-<i>ribo</i>-hexitol Adenine Nucleic Acids (α-<scp>l</scp>-HNA-A): Synthesis and Chiral Selection Properties in the Mirror Image World
作者:Daniele D’Alonzo、Mathy Froeyen、Guy Schepers、Giovanni Di Fabio、Arthur Van Aerschot、Piet Herdewijn、Giovanni Palumbo、Annalisa Guaragna
DOI:10.1021/acs.joc.5b00406
日期:2015.5.15
The synthesis and a preliminary investigation of the base pairing properties of (6' -> 4']-linked 1',5'-anhydro-L-ribohexitol nucleic acids (alpha-L-HNA) have herein been reported through the study of a model oligoadenylate system in the mirror image world. Despite its considerable preorganization due to the rigidity of the "all equatorial" pyranyl sugar backbone, a-L-HNA represents a versatile informational biopolymer, in view of its capability to cross-communicate with natural and unnatural complements in both enantiomeric forms. This seems the result of an inherent flexibility of the oligonucleotide system, as witnessed by the singular formation of iso- and heterochiral associations composed of regular, enantiomorphic helical structures. The peculiar properties of alpha-L-HNA (and most generally of the alpha-HNA system) provide new elements in our understanding of the structural prerequisites ruling the stereoselectivity of the hybridization processes of nucleic acids.