Benzastatins A, B, C, and D: New Free Radical Scavengers from Streptomyces nitrosporeus 30643. II. Structure Determination.

Abstract
The structures of benzastatins A, B, C, and D, new free radical scavengers, were determined by spectroscopic studies. Benzastatins A and B incorporate the para-aminobenzamide unit which is rare in fungal metabolites. Benzastatins C and D are unique alkaloids related to virantmycin; they contain the tetrahydroquinoline unit in the molecules.

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