Two New Cyclic Pentapeptides from the Marine‐Derived Fungus <i>Aspergillus versicolor</i>

Abstract

Abstract Two new cyclic pentapeptides, named versicotides A ( 1 ) and B ( 2 ), were obtained from a marine‐derived fungus strain ZLN‐60, identified as Aspergillus versicolor. Their structures were established on the basis of chemical and spectroscopic evidence. Versicotides are new cyclic pentapeptides which contain an L ‐alanine residue, two anthranilic acid (=2‐aminobenzoic acid) residues, and two N ‐methyl‐ L ‐alanine residues. Antitumor activities were evaluated by the SRB and MTT methods.