Ampullosporins B, C, D, E1, E2, E3, and E4, from Sepedonium ampullosporum HKI-0053. Structures and Biological Activities.

In a previous paper1) we reported the new peptaibol-type antibiotic ampullosporin A (1, Fig. 1), production by the fungal strain of Sepedonium ampullosporum, structure elucidation, and biological activities.Ampullosporin A (1) was discovered as an inducer of pigment formation by the fungal strain of Phoma destructiva.Moreover, strong