HSQC-TOCSY Fingerprinting-Directed Discovery of Antiplasmodial Polyketides from the Marine Ascidian-Derived Streptomyces sp. (USC-16018)

Chemical investigations on the fermentation extract obtained from an ascidian-derived Streptomyces sp. (USC-16018) yielded a new ansamycin polyketide, herbimycin G (1), as well as a known macrocyclic polyketide, elaiophylin (2), and four known diketopiperazines (3–6). The structures of the...

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Main Authors: Larissa Buedenbender, Luke P. Robertson, Leonardo Lucantoni, Vicky M. Avery, D. İpek Kurtböke, Anthony R. Carroll
Format: Article
Language:English
Published: MDPI AG 2018-05-01
Series:Marine Drugs
Subjects:
Online Access:http://www.mdpi.com/1660-3397/16/6/189
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author Larissa Buedenbender
Luke P. Robertson
Leonardo Lucantoni
Vicky M. Avery
D. İpek Kurtböke
Anthony R. Carroll
author_facet Larissa Buedenbender
Luke P. Robertson
Leonardo Lucantoni
Vicky M. Avery
D. İpek Kurtböke
Anthony R. Carroll
author_sort Larissa Buedenbender
collection DOAJ
description Chemical investigations on the fermentation extract obtained from an ascidian-derived Streptomyces sp. (USC-16018) yielded a new ansamycin polyketide, herbimycin G (1), as well as a known macrocyclic polyketide, elaiophylin (2), and four known diketopiperazines (3–6). The structures of the compounds were elucidated based on 1D/2D NMR and MS data. The absolute configuration of 1 was established by comparison of experimental and predicted electronic circular dichroism (ECD) data. Antiplasmodial activities were tested for the natural products against chloroquine sensitive (3D7) and chloroquine resistant (Dd2) Plasmodium falciparum strains; the two polyketides (1–2) demonstrated an inhibition of >75% against both parasite strains and while 2 was highly cytotoxic, herbimycin G (1) showed no cytotoxicity and good predicted water solubility.
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spelling doaj.art-7b046e3c1d994c1e93e06bf2e8eec8b12022-12-22T04:21:26ZengMDPI AGMarine Drugs1660-33972018-05-0116618910.3390/md16060189md16060189HSQC-TOCSY Fingerprinting-Directed Discovery of Antiplasmodial Polyketides from the Marine Ascidian-Derived Streptomyces sp. (USC-16018)Larissa Buedenbender0Luke P. Robertson1Leonardo Lucantoni2Vicky M. Avery3D. İpek Kurtböke4Anthony R. Carroll5Environmental Futures Research Institute, School of Environment and Science, Griffith University, Gold Coast Campus, QLD 4222, AustraliaEnvironmental Futures Research Institute, School of Environment and Science, Griffith University, Gold Coast Campus, QLD 4222, AustraliaGriffith Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, AustraliaGriffith Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, AustraliaGeneCology Research Centre, Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Maroochydore, QLD 4558, AustraliaEnvironmental Futures Research Institute, School of Environment and Science, Griffith University, Gold Coast Campus, QLD 4222, AustraliaChemical investigations on the fermentation extract obtained from an ascidian-derived Streptomyces sp. (USC-16018) yielded a new ansamycin polyketide, herbimycin G (1), as well as a known macrocyclic polyketide, elaiophylin (2), and four known diketopiperazines (3–6). The structures of the compounds were elucidated based on 1D/2D NMR and MS data. The absolute configuration of 1 was established by comparison of experimental and predicted electronic circular dichroism (ECD) data. Antiplasmodial activities were tested for the natural products against chloroquine sensitive (3D7) and chloroquine resistant (Dd2) Plasmodium falciparum strains; the two polyketides (1–2) demonstrated an inhibition of >75% against both parasite strains and while 2 was highly cytotoxic, herbimycin G (1) showed no cytotoxicity and good predicted water solubility.http://www.mdpi.com/1660-3397/16/6/189actinomycetesStreptomycesascidian-associated actinomycetesSymplegma rubrapolyketideansamycin derivativeherbimycinantiplasmodial activity
spellingShingle Larissa Buedenbender
Luke P. Robertson
Leonardo Lucantoni
Vicky M. Avery
D. İpek Kurtböke
Anthony R. Carroll
HSQC-TOCSY Fingerprinting-Directed Discovery of Antiplasmodial Polyketides from the Marine Ascidian-Derived Streptomyces sp. (USC-16018)
Marine Drugs
actinomycetes
Streptomyces
ascidian-associated actinomycetes
Symplegma rubra
polyketide
ansamycin derivative
herbimycin
antiplasmodial activity
title HSQC-TOCSY Fingerprinting-Directed Discovery of Antiplasmodial Polyketides from the Marine Ascidian-Derived Streptomyces sp. (USC-16018)
title_full HSQC-TOCSY Fingerprinting-Directed Discovery of Antiplasmodial Polyketides from the Marine Ascidian-Derived Streptomyces sp. (USC-16018)
title_fullStr HSQC-TOCSY Fingerprinting-Directed Discovery of Antiplasmodial Polyketides from the Marine Ascidian-Derived Streptomyces sp. (USC-16018)
title_full_unstemmed HSQC-TOCSY Fingerprinting-Directed Discovery of Antiplasmodial Polyketides from the Marine Ascidian-Derived Streptomyces sp. (USC-16018)
title_short HSQC-TOCSY Fingerprinting-Directed Discovery of Antiplasmodial Polyketides from the Marine Ascidian-Derived Streptomyces sp. (USC-16018)
title_sort hsqc tocsy fingerprinting directed discovery of antiplasmodial polyketides from the marine ascidian derived streptomyces sp usc 16018
topic actinomycetes
Streptomyces
ascidian-associated actinomycetes
Symplegma rubra
polyketide
ansamycin derivative
herbimycin
antiplasmodial activity
url http://www.mdpi.com/1660-3397/16/6/189
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