New products related to kinamycin from Streptomyces murayamaensis. II. Structures of pre-kinamycin, keto-anhydrokinamycin, and kinamycins E and F.

New products related to kinamycin from Streptomyces murayamaensis. II. Structures of pre-kinamycin, keto-anhydrokinamycin, and kinamycins E and F.