Structures of aureobasidins B to R

Abstract

Structures of 17 minor forms of aureobasidins (Abs), Abs B~R, were elucidated by mass fragmentation and amino acid analysis. The fragmentation patterns by FAB-MS spectroscopy of Abs A~E seemed to follow predictable rules, so we used the rules to elucidate the 13 other Abs. All Abs consisted of eight amino acids and one hydroxy acid. © 1991, JAPAN ANTIBIOTICS RESEARCH ASSOCIATION. All rights reserved.