Three new compounds designated as cycloaspeptides A (1), B (2), and C (3) were isolated along with ergosterol from the mycelial chloroform extract of Aspergillus sp. NE-45. The structures of cycloaspeptides A. B, and C were established on the basis of chemical and spectroscopic evidence as 1, 2, and 3, respectively. Cycloaspeptides are new cyclic pentapeptides containing an anthranilic acid residue and two N-methyl amino acid residues.
从曲霉 NE-45 菌丝体
氯仿提取物中分离出三种新化合物,分别命名为环肽 A(1)、B(2)和 C(3)。根据
化学和光谱证据,确定环肽 A、B 和 C 的结构分别为 1、2 和 3。环肽是一种新的环状五肽,含有一个
蚁酸残基和两个 N-甲基
氨基酸残基。