A new class of carbocyclic nucleoside analogues built on a bicyclo[4.1.0]heptane scaffold, a perspective novel pseudosugar pattern, have been conceived as anti-HSV agents on the basis of initial protein–ligand docking studies. The asymmetric synthesis of a series of these compounds incorporating different nucleobases has been efficiently completed starting from 1,4-cyclohexanedione.
The synthesis of a novel library of purine derivatives bearing various bicyclic and polycylic substituents at the N‐9 position is described. The series includes norbornanes, bicyclo[2.2.2]octanes, and bicyclo[3.2.1]octanes attached at the bridgehead position as well as bicyclo[3.1.1]heptanes, tetrahydro‐1‐naphthalenes, and adamantanes bonded either directly or via a linear chain to the 6‐chloropurine
New carbocyclic N6-substituted adenine and pyrimidine nucleoside analogues with a bicyclo[2.2.1]heptane fragment as sugar moiety; synthesis, antiviral, anticancer activity and X-ray crystallography
作者:Constantin I. Tănase、Constantin Drăghici、Ana Cojocaru、Anastasia V. Galochkina、Jana R. Orshanskaya、Vladimir V. Zarubaev、Sergiu Shova、Cristian Enache、Maria Maganu
DOI:10.1016/j.bmc.2015.08.033
日期:2015.10
nucleoside analogues with an optically active bicyclo[2.2.1]heptane skeleton as sugar moiety and 6-substituted adenine were synthesized by alkylation of 6-chloropurine intermediate. Thymine and uracil analogs were synthesized by building the pyrimidine ring on amine 1. X-ray crystallography confirmed an exo-coupling of the thymine to the ring and an L configuration of the nucleoside analogue. The library
Norbornane as the novel pseudoglycone moiety in nucleosides
作者:Michal Šála、Hubert Hřebabecký、Martin Dračínský、Milena Masojídková、Armando M. De Palma、Johan Neyts、Antonín Holý
DOI:10.1016/j.tet.2009.09.018
日期:2009.11
Novel nucleoside analogues based on bicyclo[2.2.1]heptene/heptane were prepared by linear synthesis starting from commercially available 1,2,3,4-tetrachloro-5,5-dimethoxycyclopentadiene 1. The crucial step of the synthesis was insertion of the amino group to the position 7 of the substituted bicyclo[2.2.1]heptene with anti-configuration by a Ritter reaction (H2SO4, AcOH, CH3CN). All nucleobases were
从市场上可买到的1,2,3,4-四氯-5,5-二甲氧基环戊二烯1开始,通过线性合成制备了基于双环[2.2.1]庚烯/庚烷的新型核苷类似物。合成的关键步骤是通过Ritter反应(H 2 SO 4,AcOH,CH 3 CN)以反构型将氨基插入取代的双环[2.2.1]庚烯的7位。所有的核碱基都在该氨基官能团上构建。测试了所制备的靶核苷家族的抑制细胞生长和抗病毒活性。
Synthesis and antiviral evaluation of cyclopentyl nucleoside phosphonates
作者:Mengmeng Wang、Puneet Srivastava、Chao Liu、Robert Snoeck、Graciela Andrei、Steven De Jonghe、Piet Herdewijn
DOI:10.1016/j.ejmech.2018.03.008
日期:2018.4
The synthesis of both 2ʹ-hydroxy-3ʹ-deoxy and 2ʹ-deoxy-3ʹ-hydroxy cyclopentyl nucleoside phosphonates with the natural nucleobases adenine, thymine, cytosine and guanine from a single precursor has been performed. The guanine containing analogues showed antiviral activity. Especially the 3ʹ-deoxy congener 23 was active, displaying an EC50 of 5.35 μM against TK+ VZV strain and an EC50 of 8.83 μM against