Isolation and structure of nanaomycin D, an enantiomer of the antibiotic kalafungin

Abstract

The absolute configuration of nanaomycin D, the fourth antibiotic isolated from Streptomyces rosa var. notoensis which is also obtained from nanaomycin A by air oxidation in methanol, has been determined; it has been found to be the enantiomer (1) of kalafungin (2).