NOVEL ANTIMICROBIAL PEPTIDES AND THEIR APPLICATION

摘要

This invention involves four novel peptides of the formulas I, II, III a IV isolated from natural sources and their synthetic analogs of general formula V and VI, where R 1 represents acyl, alkyl or unprotected amino group, R 2 represents amid, substituted amid, unprotected carboxylic group or ester, Xaa represents, independently from each other, proteinogenic amino acid, D-amino acid, non-standard amino acid or amino acid with the side chain modification, n means position of the amino acid replacement and m means the number of the replacements in the peptide chain, and their applications as antimicrobial, antiviral, antifungal, antiparasitic and anticancer compounds. Therefore, they are practical for the production of medication for the treatment of microbial, parasitic and fungal diseases and for the cancer treatment. Formulas for summary: H-Gly-Phe-Leu-Ser-Ile-Leu-Lys-Lys-Val-Leu-Pro-Lys-Val-Met-Ala-His-Met-Lys-NH2 (I) H-VaI-Asn-Trp-Lys-Lys-VaI-Leu-GIy-Lys-IIe-IIe-Lys-VaI-AIa-Lys-NH2 (II) H-VaI-Asn-Trp-Lys-Lys-IIe-Leu-GIy-Lys-IIe-IIe-Lys-VaI-AIa-Lys-NH2 (III) H-Val-Asn-Trp-Lys-Lys-Ile-Leu-Gly-Lys-Ile-Ile-Lys-Val-Val-Lys-NH2 (IV) R1-[Xaan]m -Gly-Phe-Leu-Ser-Ile-Leu-Lys-Lys-Val-Leu-Pro-Lys-Val-Met-Ala-His-Met-Lys-R2 (V) R1-[Xaan]m-Val-Asn-Trp-Lys-Lys-Ile-Leu-Gly-Lys-Ile-Ile-Lys-Val-Val-Lys-R2 (VI)