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Melatonergic agents

  • US 5,541,228 A
  • Filed: 03/08/1995
  • Issued: 07/30/1996
  • Est. Priority Date: 10/14/1994
  • Status: Expired due to Term
First Claim
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1. A compound of formula I:

  • ##STR25## wherein;

    R1 =C1- alkyl, allyl, C3-6 cycloalkyl substituted C1-4 alkyl;

    R2 =hydrogen, halogen or C1-4 alkoxy;

    R3 =hydrogen or C1-4 alkyl;

    R4 =C1-4 alkyl, C3-6 cycloalkyl, or straight or branched chain C2-4 alkenyl;

    A=a linear C2-4 alkanediyl or alkenediyl chain, provided that A not be --CH2 CH2 -- when X is a bond; and

    X=a covalent bond or oxygen.

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