7-SUBSTITUTED 7-DEAZA-2'-DEOXYGUANOSINES - REGIOSELECTIVE HALOGENATION OF PYRROLO[2,3-D]PYRIMIDINE NUCLEOSIDES

被引:50
作者
RAMZAEVA, N [1 ]
SEELA, F [1 ]
机构
[1] UNIV OSNABRUCK,INST CHEM,ORGAN & BIOORGAN CHEM LAB,D-49076 OSNABRUCK,GERMANY
关键词
D O I
10.1002/hlca.19950780505
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The synthesis of 7-chloro-, 7-bromo-, and 7-iodo-substituted 7-deaza-2'-deoxyguanosine derivatives 2b-d is described. The regioselective 7-halogenation with N-halogenosuccinimides was accomplished using 7-[2-deoxy-3,5- O-di(2-methylpropanoyl)-beta-D-erytilro-pentofuranosyl]-2-(formylamino)-4-methoxy-7H-pyrrolo[2,3-d]pyrimidine (4) as the common precursor. A one-pot reaction (2N aq. NaOH) of the halogenated intermediates 5a-c furnished the desired compounds. Also the 7-hexynyl derivative 2e of 7-deaza-2'-deoxyguanosine is described.
引用
收藏
页码:1083 / 1090
页数:8
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