Abstract

On examining the structures of the antibiotics tridecaptins B and C, the constituent amino acids were separated and their chiralities were determined. The constituent fatty acids were identified by gas chromatography and mass spectrometry. Cleavage with N-bromosuccinimide and sequential analysis by EDMAN degradation demonstrates the sequence of the C-terminal side of tridecaptins B and C. Deacylation with polymyxin acylase of tridecaptin B and successive EDMAN degradation revealed the sequence of the N-terminal side of tridecaptin B. Finally partial acid hydrolysis on tridecaptin C clarified the sequence of the N-terminal side of tridecaptin C.

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