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Four new neo-clerodane diterpenes from the stem bark of Croton oligandrus.

Guetchueng, ST, Nahar, L, Ritchie, KJ, Ismail, FMD, Dempster, NM, Evans, AR and Sarker, SD (2019) Four new neo-clerodane diterpenes from the stem bark of Croton oligandrus. Natural Product Research. ISSN 1478-6419

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Abstract

Four new neo-clerodanes, crotonolins C-F (3-6), were isolated from the stem bark of Croton oligandrus together with the known clerodane crotonzambefuran A, the abietanes 7-β-hydroxydehydroabietic acid and 7-oxodehydroabietic acid, and ferulic acid. Their structures were elucidated by spectroscopic analyses including 1D and 2D NMR and HRESIMS and by comparison with previously reported data. The cytotoxicity of the isolated compounds against A549, MCF7, PC3 and PNT2 cells was evaluated using the MTT assay. Only 7-β-hydroxydehydroabietic acid showed a moderate level of activity against PC3 cells with an IC50 value of 68.9 ± 6.6 μM.

Item Type: Article
Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis in Natural Product Research on 17/06/2019, available online: http://www.tandfonline.com/10.1080/14786419.2019.1628745
Uncontrolled Keywords: MD Multidisciplinary
Subjects: R Medicine > RM Therapeutics. Pharmacology
R Medicine > RV Botanic, Thomsonian, and eclectic medicine
Divisions: Pharmacy & Biomolecular Sciences
Publisher: Taylor & Francis
Date Deposited: 07 Jun 2019 09:45
Last Modified: 17 Jun 2020 00:50
DOI or Identification number: 10.1080/14786419.2019.1628745
URI: https://researchonline.ljmu.ac.uk/id/eprint/10845

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