Two New Metabolites, Sydonic Acid and Hydroxysydonic Acid, from Aspergillus sydowi

Abstract

From the culture filtrates of Aspergillus sydowi two new metabolites, designated as sydonic acid and hydroxysydonic acid, have been isolated. Sydonic acid, C₁₅H₂₂O₄, forms colorless needles, mp 158_??_159°C and hydroxysydonic acid, C₁₅H₂₂O₅, forms colorless needles, mp 135_??_136°C. These metabolites are optically inactive. From the results of chemical and spectroscopic examinations it is concluded that sydonic and hydroxysydonic acids are represented by formulae I and II, respectively.