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Identification and characterization of a library of microheterogeneous cyclohexadepsipeptides from the fungus Isaria.
Ten new cyclic hexadepsipeptides, six isariins and four isaridins, from the fungus Isaria have been identified and characterized by high-performance liquid chromatography, coupled to tandemExpand
Two Novel Hexadepsipeptides with Several Modified Amino Acid Residues Isolated from the Fungus Isaria
TLDR
Two new cyclohexadepsipeptides have been isolated from the fungus Isaria by reverse‐phase HPLC and characterized by ESI‐MS and 1H‐NMR, containing several unusual amino acid residues. Expand
Identification of α- and β-hydroxy acid containing cyclodepsipeptides in natural peptide mixtures using negative ion mass spectrometry
TLDR
Fragmentation of negative ions provide characteristic neutral losses, which are diagnostic of the presence of α-Hydroxy or β-hydroxy residues, and rationalizes the observed product ion formation in natural peptide libraries. Expand
Identification and Characterization of a Library of Microheterogeneous Cyclohexadepsipeptides from the Fungus
Ten new cyclic hexadepsipeptides, six isariins and four isaridins, from the fungus Isaria have been identified and characterized by high-performance liquid chromatography, coupled to tandemExpand
Effect of ester chemical structure and peptide bond conformation in fragmentation pathways of differently metal cationized cyclodepsipeptides.
TLDR
Combined MS and NMR data suggest that the different behavior in sequence specific charge-driven fragmentation of isariins and isaridins is predetermined because of the constituent β-hydroxy acid residue in isARIins and the cis peptide bond in isarids. Expand