Studies in relation to Biosynthesis. VIII. Tasmanone, Dehydroangustione, and Calythrone

Abstract

Tasmanone from the oil of Eucalyptus risdoni Hook. gives a crystalline copper salt and imine and by acid hydrolysis produces 1,1,3-trimethylphloroglucinol. Its probable constitution is discussed. Evidence is presented for assigning to dehydroangustione the formula III and to calythrone the formula IX. The biogenetic relations of these substances are discussed.