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Issue 13, 2008
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Synthesis of substituted 6-cyclopropylpurine bases and nucleosides by cross-coupling reactions or cyclopropanations

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Abstract

Synthesis of novel purine bases and nucleosides bearing unsubstituted or substituted cyclopropyl rings in position 6 is reported. Unsubstituted 6-cyclopropylpurines were efficiently prepared by cross-coupling reactions of 6-chloropurines with cyclopropylzinc chloride. 6-Vinylpurines underwent Cu-mediated cyclopropanations with ethyl diazoacetate to give 6-[(ethoxycarbonyl)cyclopropyl]purines that were further transformed to carboxylic acids, amides and alcohols. 6-Cyclopropylpurine ribonucleoside exerted a significant cytostatic effect while all substituted derivatives were inactive.

Graphical abstract: Synthesis of substituted 6-cyclopropylpurine bases and nucleosides by cross-coupling reactions or cyclopropanations

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Publication details

The article was received on 19 Feb 2008, accepted on 11 Apr 2008 and first published on 02 May 2008


Article type: Paper
DOI: 10.1039/B802833H
Citation: Org. Biomol. Chem., 2008,6, 2377-2387
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    Synthesis of substituted 6-cyclopropylpurine bases and nucleosides by cross-coupling reactions or cyclopropanations

    M. Kuchař, R. Pohl, B. Klepetářová, I. Votruba and M. Hocek, Org. Biomol. Chem., 2008, 6, 2377
    DOI: 10.1039/B802833H

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