The structure of amphotericin A. II. The complete structure of the antibiotic

The structure of amphotericin A without the configuration of asymmetric carbon atoms has been elucidated. The stereochemistry of the sugar moiety has been determined. On the basis of homoscalar correlated 2D 1H spectra. of amphotericin A the position of the hemiketal moiety has been located, and the chemical shifts of all the protons in the antibiotic molecule have been determined.