OXIDATIVE CYCLIZATION OF 2',3'-O-ISOPROPYLIDENE-ADENOSINES INTO 5'-O,8-CYCLOADENOSINES WITH LEAD-TETRAACETATE - REMARKABLE EFFECT OF N6-SUBSTITUENTS ON THE OXIDATION

被引:7
|
作者
KITADE, Y [1 ]
MAKINO, T [1 ]
HIROTA, K [1 ]
MAKI, Y [1 ]
机构
[1] GIFU PHARMACEUT UNIV,DEPT MED CHEM,5-6-1 MITAHORA HIGASHI,GIFU 502,JAPAN
来源
NUCLEOSIDES & NUCLEOTIDES | 1992年 / 11卷 / 2-4期
关键词
D O I
10.1080/07328319208021710
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Oxidation of 2',3'-O-isopropylideneadenosines (1) with lead tetraacetate (LTA) in dry benzene resulted in the formation of the corresponding 5'-O,8-cyclo-2',3'-O-isopropylideneadenosines (2), which has a new methodological implication for the chemical modification of adenosines. The occurrence of the oxidative cyclization was remarkably affected by the nature of N6-substituents: N6-benzoyl substitution prominently accelerated the oxidative cyclization in comparison with none and dimethyl substitutions. In the oxidation of N6,N6-dimethyladenosine (1d), an intriguing oxidative demethylation was observed.
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页码:365 / 372
页数:8
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