PHYSIOLOGICALLY ACTIVE SUBSTANCE FA-5859, ITS DERIVATIVE; THEIR PRODUCTION AND ANTIDIABETIC AGENTS CONTAINING SAID COMPOUNDS

摘要

Physiologically active substance FA-5859 and its deacetyl compound represented by the formula: wherein R1 is a hydrogen atom or an acetyl group, are produced by a cultivation of a microorganism of the genus Emericella or Aspergillus (compound wherein R1 is an acetyl group) or by a method of chemical synthesis (compound wherein R1 is a hydrogen atom or an acetyl group). Said compounds or a salt thereof have excellent fatty acid degradation inhibiting activity and is useful as an antidiabetic agent in mammalian animals or as a biochemical reagent for studies on fatty acid metabolism.