An Efficient Approach for the Synthesis of 1′-O-α-Methyl Pyrrolo[2,3-d]pyrimidine Isonucleosides

被引:5
|
作者
Song, Yang [1 ]
Yang, Ruchun [2 ]
Ding, Haixin [2 ]
Sun, Qi [2 ]
Xiao, Qiang [2 ]
Ju, Yong [1 ]
机构
[1] Tsinghua Univ, Dept Chem, Minist Educ, Key Lab Bioorgan Phosphorus Chem & Chem Biol, Beijing 100084, Peoples R China
[2] Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Peoples R China
来源
SYNTHESIS-STUTTGART | 2011年 / 08期
关键词
pyrrolo[2,3-d]pyrimidine; isonucleoside; regioselective deprotection; triflate; cesium carbonate; PHASE-TRANSFER GLYCOSYLATION; ADENOSINE KINASE INHIBITORS; ANTIVIRAL ACTIVITY; ISOMERIC NUCLEOSIDES; ANALOGS; RIBONUCLEOSIDES; DEBENZYLATION; DERIVATIVES; LIQUID;
D O I
10.1055/s-0030-1259961
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A series of novel 1'-O-alpha-methyl isonucleosides were efficiently and stereoselectively synthesized with 1,2,3,5-tetra-O-acetyl-D-ribofuranose as the starting material. The key steps include regioselective and stereoselective deprotection of the 2,4-dichlorobenzyl group at C2, triflation, and substitution with appropriate nucleobases using cesium carbonate as the base. Removal of the residual 2,4-dichlorobenzyl groups and subsequent transformation afforded the title compounds in 30-37% overall yield. The products represent a new type of isonucleosides with 1'-O-substitution.
引用
收藏
页码:1213 / 1218
页数:6
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