New extracellular fatty acids in culture filtrates of Sporothrixflocculosa and S. rugulosa

Abstract

Two new and rare unsaturated, extracellular fatty acids were identified in the culture filtrates of the biocontrol fungi, Sporothrixflocculosa and S. rugulosa. 16-Methyl-9E-nonadecenoic acid (1) and (Z,Z)-10,14-eicosadienoic acid (2) were characterized on the basis of infrared (IR) and nuclear magnetic resonance spectra (13C and 1N NMR), and gas chromatographic – mass spectrometric data (GC–MS). The structure of compounds 1 and 2 was confirmed by oxidative degradation to the known standards, dimethyl azelate, dimethyl succinate, dimethyl sebacate, and methyl caproate. Keywords: unsaturated fatty acids, fungi.