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C-5 Substituted cytosine nucleosides

  • US 4,267,171 A
  • Filed: 07/02/1979
  • Issued: 05/12/1981
  • Est. Priority Date: 07/02/1979
  • Status: Expired due to Term
First Claim
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1. A compound of the formula ##STR9## wherein Ro is β

  • -D-ribofuranosyl, β

    -D-2-deoxyribofuranosyl or β

    -D-arabinofuranosyl and R is selected from the group consisting of ##STR10## wherein R1 is hydrogen;

    R3 is hydrogen or methyl;

    R4 is C1-4 lower alkyl;

    R6 is hydrogen; and

    the pharmaceutically acceptable acid addition salts thereof.

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