Studies on Fungal Products. XI. Isolation and Structures of Novel Cyclic Pentapeptides from Aspergillus sp. NE-45

REIJI KOBAYASHI; YUJI SAMEJIMA; SHOICHI NAKAJIMA; KEN-ICHI KAWAI; SHUN-ICHI UDAGAWA

doi:10.1248/cpb.35.1347

Studies on Fungal Products. XI. Isolation and Structures of Novel Cyclic Pentapeptides from Aspergillus sp. NE-45

REIJI KOBAYASHI, YUJI SAMEJIMA, SHOICHI NAKAJIMA, KEN-ICHI KAWAI, SHUN-ICHI UDAGAWA

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Keywords: Aspergillus, cyclic peptide, cycloaspeptide A, cycloaspeptide B, cycloaspeptide C, anthranylic acid, N-methyl amino acid, amino acid analysis

JOURNAL FREE ACCESS

1987 Volume 35 Issue 4 Pages 1347-1352

DOI https://doi.org/10.1248/cpb.35.1347

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Abstract

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.

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