Patents Assigned to Newport Pharmaceuticals, Inc.
  • Process for preparing purine compounds
    Patent number: 4602089
    Abstract: There are prepared compounds of the formulae ##STR1## where R is lower alkyl, chlorine, or bromine and n is an integer from 1 to 5. The compounds of formula (1) can be used to make erythro-9-(2-hydroxy-3-nonyl) hypoxanthine and its homologues and also to make the compounds of formulae (2) and (3). All three classes of compounds are useful as immunomodulators.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: July 22, 1986
    Assignee: Newport Pharmaceuticals, Inc.
    Inventors: Lionel N. Simon, Hans-Rudolf Mueller, Hans Zutter