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Chemical compounds

  • US 6,258,951 B1
  • Filed: 02/09/2000
  • Issued: 07/10/2001
  • Est. Priority Date: 12/18/1995
  • Status: Expired due to Term
First Claim
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1. A quinazoline derivative of the formula Ia:

  • wherein;

    Y1 represents —

    O—

    , —

    NH—

    , —

    S—

    or —

    CH2

    ;

    n is an integer from 0 to 5;

    X1 represents a phenyl group or a 5- or 6-membered aromatic heterocyclic group with 1 to 3 heteroatoms selected from O, N and S, which phenyl or heterocyclic group may carry up to 5 substituents selected from halogeno, C1-4alkyl, C1-4alkoxy, C1-4hydroxyalkyl, C1-4hydroxyalkoxy, carboxy, cyano, —

    CONR41R42 and —

    NR43COR44, wherein R41, R42, R43 and R44, which may be the same or different, each represents hydrogen or C1-4alkyl;

    R1 represents hydrogen, hydroxy, C1-3alkyl, C1-3alkoxy, C1-3alkylthio, or NR45R46, wherein R45 and R46, which may be the same or different, each represents hydrogen or C1-3alkyl;

    R2 represents hydrogen, hydroxy, halogeno, C1-3alkyl, C1-3alkoxy, trifluoromethyl, cyano, amino or nitro;

    m is an integer from 1 to 5;

    R3 represents hydroxy, halogeno, C1-3alkyl, C1-3alkoxy, C1-3alkanoyloxy, trifluoromethyl, cyano, amino or nitro;

    Z represents —

    NH—

    ; and

    Y6 represents a direct bond; and

    salts thereof.

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