Journal
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
Volume 30, Issue 11, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2020.127135
Keywords
Peptaibol; Cancer; Culicinin D
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Funding
- Maurice Wilkins Centre for Molecular Biodiscovery
- Health Research Council of New Zealand [18/219]
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Culicinin D (1), a 10 amino acid peptaibol originally isolated from Culicinomyces clavisporus, exhibits potent activity against a range of cancer cell lines. Building on our previous work exploring the structure-activity relationship (SAR) of the unusual (2S,4S,6R)-AHMOD residue, a series of analogues of culicinin D were prepared to further investigate the SAR of these peptaibols. Alanine scanning of a potent and readily accessible analogue 23 revealed the effect of each residue on antiproliferative activity, and a small panel of analogues were prepared to explore the SAR of the non-natural amino acid residue (2S,4R)-AMD. Results from the alanine scan were used to design an expanded library of culicinin D analogues, leading to the discovery of cyclohexylalanine analogue 52, which exhibited better antiproliferative activity than the natural product 1.
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