Decumbic anhydride from the stem barks of Swintonia floribunda (Anacardiaceae)
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Phu Hoang Dang
,
Tho Huu Le
Abstract
From an EtOAc-soluble fraction of the stem barks of Swintonia floribunda (Anacardiaceae), decumbic anhydride (1) and four known compounds 2–5 were isolated. Their chemical structures were elucidated based on the spectroscopic data interpretation. The GIAO-DFT calculation of 13C NMR chemical shifts was carried out to clarify the structure of 1. The absolute configuration of 1 was assigned based on the Cotton effects in its ECD spectrum. Compound 1 showed potent tyrosinase inhibitory activity with an IC50 value of 52.2 μM.
Funding source: Viet Nam National University Ho Chi Minh City
Award Identifier / Grant number: C2019-18-12
Acknowledgments
This research is funded by Vietnam National University Ho Chi Minh City (VNUHCM) under grant number C2019-18-12, to Phu Hoang Dang.
Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This research is funded by Vietnam National University Ho Chi Minh City (VNUHCM) under grant number C2019-18-12, to Phu Hoang Dang.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Supplementary material
Conformational data of decumbic acid (Table S1) and copies of spectroscopic data for 1 (Figures S1–S5).
The online version of this article offers supplementary material (https://doi.org/10.1515/znc-2020-0136).
© 2020 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
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Artikel in diesem Heft
- Frontmatter
- Review Article
- The fate of chlorophyll in phytophagous insects goes beyond nutrition
- Research Articles
- Eleven isoquinoline alkaloids on inhibiting tissue factor activity: structure-activity relationships and molecular docking
- Absolute configuration of tetrandrine and isotetrandrine influences their anti-proliferation effects in human T cells via different regulation of NF-κB
- Safflower injection inhibits pulmonary arterial remodeling in a monocrotaline-induced pulmonary arterial hypertension rat model
- Gas chromatography coupled to mass spectrometry (GC-MS) characterization and evaluation of antibacterial bioactivities of the essential oils from Piper arboreum Aubl., Piper aduncum L. e Piper gaudichaudianum Kunth
- Isolation of secondary metabolites from the Iranian medicinal plant Eremurus persicus
- Decumbic anhydride from the stem barks of Swintonia floribunda (Anacardiaceae)
- Phytochemical characterization of different yarrow species (Achillea sp.) and investigations into their antimicrobial activity
- Monitoring of changes in 5-n-alkylresorcinols during wheat seedling development
- Coumaronochromone as antibacterial and carbonic anhydrase inhibitors from Aerva persica (Burm.f.) Merr.: experimental and first-principles approaches
- Ethyl acetate extract from Cistus x incanus L. leaves enriched in myricetin and quercetin derivatives, inhibits inflammatory mediators and activates Nrf2/HO-1 pathway in LPS-stimulated RAW 264.7 macrophages
- Rapid Communication
- A new xanthone dimer and cytotoxicity from the stem bark of Calophyllum canum
