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Cyclic Octamer Peptoids: Simplified Isosters of Bioactive Fungal Cyclodepsipeptides.

ABSTRACT: Cyclic peptoids have recently emerged as an important class of bioactive scaffolds with unique conformational properties and excellent metabolic stabilities. In this paper, we describe the design and synthesis of novel cyclic octamer peptoids as simplified isosters of mycotoxin depsipeptides bassianolide, verticilide A1, PF1022A and PF1022B. We also examine their complexing abilities in the presence of sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (TFPB) salt and explore their general insecticidal activity. Finally, we discuss the possible relationship between structural features of free and Na?-complexed cyclic octamer peptoids and bioactivities in light of conformational isomerism, a crucial factor affecting cyclic peptoids' biomimetic potentials.

SUBMITTER: D'Amato A 

PROVIDER: S-EPMC6100324 | biostudies-other | 2018 Jul

REPOSITORIES: biostudies-other

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Cyclic Octamer Peptoids: Simplified Isosters of Bioactive Fungal Cyclodepsipeptides.

D'Amato Assunta A   Della Sala Giorgio G   Izzo Irene I   Costabile Chiara C   Masuda Yuichi Y   De Riccardis Francesco F  

Molecules (Basel, Switzerland) 20180719 7

Cyclic peptoids have recently emerged as an important class of bioactive scaffolds with unique conformational properties and excellent metabolic stabilities. In this paper, we describe the design and synthesis of novel cyclic octamer peptoids as simplified isosters of mycotoxin depsipeptides bassianolide, verticilide A1, PF1022A and PF1022B. We also examine their complexing abilities in the presence of sodium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate (TFPB) salt and explore their general in  ...[more]