| 摘要 |
Cyclic peptides of formula (I) are new, with the proviso that they contain 10-200 amino acid units and with the exception of the known alpha-amylase inhibitor tendamistat and the alpha-amylase inhibitor isolated from cultures of Streptomyces violaceoruber ATCC 31209. Z = Gln, Asn or Met; S = Ser or Thr; Y = Phe, Tyr or Asn; AS = a peptide chain of 5-25 natural amino acids, opt. substd. by other natural amino acids or peptide chains. - Streptomyces aureofaciens DSM 2790 is also new. |
