Penicimutanin C, a New Alkaloidal Compound, Isolated from a Neomycin‐Resistant Mutant 3‐f‐31of Penicillium purpurogenum G59

Penicimutanin C, a new alkaloidal compound, was isolated from the neomycin‐resistant mutant strain 3‐f‐31 of the marine‐derived fungus, Penicillium purpurogenum G59, together with four known compounds. The structure of penicimutanin C, including the absolute configuration, was determined by spectroscopic and chemical methods. The absolute configuration of penicimutanin A was also re‐confirmed by Marfey's and chiral HPLC analyses of the...