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Effective Synthesis and Antifouling Activity of Dolastatin 16 Derivatives. Mar Drugs 2022; 20:md20020124. [PMID: 35200652 PMCID: PMC8876244 DOI: 10.3390/md20020124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/01/2022] [Accepted: 02/01/2022] [Indexed: 11/17/2022] Open
Abstract
Some derivatives of dolastatin 16, a depsipeptide natural product first obtained from the sea hare Dolabella auricularia, were synthesized through second-generation synthesis of two unusual amino acids, dolaphenvaline and dolamethylleuine. The second-generation synthesis enabled derivatizations such as functionalization of the aromatic ring in dolaphenvaline. The derivatives of fragments and whole structures were evaluated for antifouling activity against the cypris larvae of Amphibalanus amphitrite. Small fragments inhibited the settlement of the cypris larvae at potent to moderate concentrations (EC50 = 0.60-4.62 μg/mL), although dolastatin 16 with a substituent on the aromatic ring (24) was much less potent than dolastatin 16.
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Maharani R, Sleebs BE, Hughes AB. Macrocyclic N-Methylated Cyclic Peptides and Depsipeptides. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2015. [DOI: 10.1016/b978-0-444-63460-3.00004-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Sleebs MM, Scanlon D, Karas J, Maharani R, Hughes AB. Total Synthesis of the Antifungal Depsipeptide Petriellin A. J Org Chem 2011; 76:6686-93. [DOI: 10.1021/jo201017w] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marianne M. Sleebs
- Department of Chemistry, La Trobe Institute of Molecular Sciences, La Trobe University, Victoria 3086, Australia
| | - Denis Scanlon
- Department of Chemistry, La Trobe Institute of Molecular Sciences, La Trobe University, Victoria 3086, Australia
| | - John Karas
- Department of Chemistry, La Trobe Institute of Molecular Sciences, La Trobe University, Victoria 3086, Australia
| | - Rani Maharani
- Department of Chemistry, La Trobe Institute of Molecular Sciences, La Trobe University, Victoria 3086, Australia
| | - Andrew B. Hughes
- Department of Chemistry, La Trobe Institute of Molecular Sciences, La Trobe University, Victoria 3086, Australia
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