2-Azabicyclo[2.2.1]hept-5-en-3-one epoxide: A versatile intermediate for the synthesis of cyclopentyl carbocyclic 2-deoxy-, 3-deoxy- & ara- ribonucleoside analogues
作者:Belén M Domínguez、Paul M Cullis
DOI:10.1016/s0040-4039(99)01113-2
日期:1999.7
5,6-Epoxy-exo-2-azabicyclo[2.2.1]heptan-3-one has been used as a versatile intermediate in the synthesis of 2-deoxy-, 3-deoxy- and ara- cyclopentyl carbocyclic nucleosides. An efficient, short synthesis of the (+) carbocyclic thymidine 13 is reported.
Synthesis and antiviral activity of the carbocyclic analogs of 5-ethyl-2'-deoxyuridine and of 5-ethynyl-2'-deoxyuridine
作者:Y. Fulmer Shealy、C. Allen O'Dell、Gussie Arnett、William M. Shannon
DOI:10.1021/jm00151a013
日期:1986.1
The carbocyclic analogue of the antiviral agent 5-ethyl-2'-deoxyuridine (EDU) was synthesized by two routes. The pivotal step in the first route is the reaction of lithium dimethylcuprate with the carbocyclic analogue of 5-(bromomethyl)-2'-deoxyuridine dibenzoate (6). The second route is based on the synthesis of the carbocyclic analogue of 5-ethynyl-2'-deoxyuridine (12) by a coupling reaction catalyzed
抗病毒剂5-乙基-2'-脱氧尿苷(EDU)的碳环类似物通过两种途径合成。第一条途径的关键步骤是使二甲基二甲基碳酸锂与5-(溴甲基)-2'-脱氧尿苷二苯甲酸酯的碳环类似物反应(6)。第二种路线是基于双(三苯基膦)氯化钯(II)和碘化铜(I)催化的偶合反应合成5-乙炔基-2'-脱氧尿苷(12)的碳环类似物。 (Robins and Barr)合成真正的核苷5-乙炔基-2'-脱氧尿苷(1b)。EDU的碳环类似物抑制Vero细胞中1型和2型单纯疱疹病毒的复制。5-乙炔基-2'-脱氧尿苷的碳环类似物对1型和2型单纯疱疹病毒具有适度的活性。
Cyclopentane-Nucleobase Coupling in the Synthesis of Carbocyclic L-Nucleosides: is A S<sub> <i>N</i> </sub>2-Reaction an Alternative to the Mitsunobu-Reaction?
作者:S. Jessel、E. Hense、C. Meier
DOI:10.1080/15257770701527745
日期:2007.11.26
Several carbocyclic L-nucleosides have been synthesized by coupling a cyclopentane-system with heterocycles according to a modified Mitsunobu-protocol. This reaction gave two regioisomers, the NI-alkylated product and an unwanted O-2-product. A simple, S(N)2-reaction has been investigated as an alternative for such couplings.