Open AccessISARIIN, A NEW DEPSIPEPTIDE FROM ISARIA CRETACEA
Author(s) -
L. C. Vining,
Willard A. Taber
Publication year - 1962
Publication title -
canadian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.323
H-Index - 68
eISSN - 1480-3291
pISSN - 0008-4042
DOI - 10.1139/v62-239
Subject(s) - chemistry , valine , amino acid , alanine , glycine , hydrolysis , stereochemistry , yield (engineering) , leucine , organic chemistry , biochemistry , materials science , metallurgy
One of the metabolic products of the fungus Isaria cretacea has been found to yield four different amino acids and a hydroxyacid on acid hydrolysis. The amino acids were identified as glycine, L-alanine, L-valine, and D-leucine, and a quantitative analysis showed them to be present in the molar ratio of 1:1:2:1, respectively. The hydroxyacid was identified as D-β-hydroxydodecanoic acid. These units appear to be combined in a simple cyclic structure by means of peptide bonds and an ester linkage between the hydroxyl of hydroxydecanoic acid and the carboxyl of the C-terminal amino acid. The sequence valine → β-hydroxydodecanoic acid → glycine has been established.