172163-62-1Relevant articles and documents
7-Substituted 7-deaza-2'-deoxyguanosines: Regioselective halogenation of pyrrolo[2,3-d]pyrimidine nucleosides
Ramzaeva,Seela
, p. 1083 - 1090 (1995)
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)-β-D-erythro-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.
7-the to nitrogen -2 [...] -deoxy-7-halogen-substituted guanine nucleoside synthesis method
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Paragraph 0041; 0052; 0053; 0054, (2017/02/24)
The invention discloses a synthetic method of 7-denitrified-2'-deoxidized-7-halogen substituted guanosine; the method comprises the following steps: a compound in the following formula (I) is obtained from a compound in the following formula (V) by demeth
7-to nitrogen-7-halogen-guanine nucleoside synthesis method
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Paragraph 0043; 0063; 0064; 0065, (2016/10/08)
The invention discloses a method for synthesizing 7-denitrification-7-halogen guanosine. The method comprises the following steps: removing a protecting group of a compound of the formula (III) under an alkali condition so as to obtain a compound of the f