A chalcone derivative from the bark of Lindera umbellata

Shimomura, Hiroko; Sashida, Yutaka; Mimaki, Yoshihiro; Oohara, Motomu; Fukai, Yasuomi

doi:10.1016/0031-9422(88)83049-8

Cited by 12 publications

(7 citation statements)

References 20 publications

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“…Apigenin-6,8-di- C -α- l -arabinopyranoside, pinostrobin chalcone, pinostrobin, longistyline C, and cajaninstilbene acid (3-hydroxy-4-prenyl-5-methoxystilbene-2-carboxylic acid) were separated and purified from pigeon pea leaves in our laboratory . Their structures were confirmed by electrospray ionization mass spectrometry (ESI–MS) and 1 H and 13 C nuclear magnetic resonance (NMR) (see Figures S1–S5 of the Supporting Information) in comparison to literature data. ,− A total antioxidant capacity assay kit with the ABTS method was purchased from Beyotime Institute of Biotechnology (China). High-performance liquid chromatography (HPLC)-grade methanol and formic acid were obtained from J&K Chemical, Ltd. (Beijing, China) and Dima Technology, Inc. (Muskegon, MI), respectively.…”

Section: Methodsmentioning

confidence: 99%

Variation in Contents of Main Active Components and Antioxidant Activity in Leaves of Different Pigeon Pea Cultivars during Growth

Wei¹,

Jin²,

Luo³

et al. 2013

J. Agric. Food Chem.

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Pigeon pea is an important and multiuse grain legume crop, and its leaves are a very valuable natural resource. To obtain a high-quality biological resource, it is necessary to choose the excellent cultivar and determine the appropriate harvest time. In this study, the variation in contents of main active components and antioxidant activity in leaves of six pigeon pea cultivars during growth were investigated. The level of each individual active component significantly varied during growth, but with a different pattern, and this variation was different among cultivars. Flavonoid glycosides orientin, vitexin, and apigenin-6,8-di-C-α-L-arabinopyranoside showed two peak values at mid-late and final stages of growth in most cases. Pinostrobin chalcone, longistyline C, and cajaninstilbene acid showed remarkablely higher values at the mid-late stage of growth than at other stages. Pinostrobin had an extremely different variation pattern compared to other active components. Its content was the highest at the earlier stage of growth. Principal component analysis (PCA) revealed that vitexin and apigenin-6,8-di-C-α-L-arabinopyranoside were mainly responsible for distinguishing cultivars analyzed. In a comprehensive consideration, the leaves should preferentially be harvested at the 135th day after sowing when the level of active components and antioxidant activity reached higher values. Cultivars ICP 13092, ICPL 87091, and ICPL 96053 were considered to be excellent cultivars with high antioxidant activity. Our findings can provide valuable information for producing a high-quality pigeon pea resource.

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Section: Methodsmentioning

confidence: 99%

Variation in Contents of Main Active Components and Antioxidant Activity in Leaves of Different Pigeon Pea Cultivars during Growth

Wei¹,

Jin²,

Luo³

et al. 2013

J. Agric. Food Chem.

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“…13C-NMR assignments (see Table 1) were made by comparison with 13C-NMR data of other chalcones (12,13). Three oxygenated substituents were present in both compounds at positions 2', 4', and 6' [low field shifts of oxygen-bearing carbons indicating hydroxy and methoxy substituents being in a position meta to each other (14)].…”

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confidence: 99%

Antifungal and Antibacterial Chalcones fromMyrica serrata

Gafner

Wolfender

Mavi³

et al. 1996

Planta Med

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The dichloromethane extract of the leaves of Myrica serrata inhibits growth of Cladosporium cucumerinum, Bacillus subtilis, and Escherichia coli on TLC plates. Activity-guided fractionation led the isolation of 2',4'-dihydroxy-6'-methoxy-3',5'-dimethylchalcone (1), 2',4'-dihydroxy-6'-methoxy-5'-methylchalcone (aurentiacin A) (2), 2',6'-dihydroxy-4'-methoxy-3',5'-dimethyldihydrochalcone (3), 2'-hydroxy-4',6'-dimethoxy-3'-methyldihydrochalcone (4), and 2', 6'-dihydroxy-4'-methoxy-3'-methyldihydrochalcone (5). In addition, the flavanones demethoxymatteucinol (6) and cryptostrobin (7) were also identified.

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“…The 13 C NMR spectrum (Table 1) showed signals for 16 carbon atoms including one methoxyl group, nine methine and six quaternary carbon atoms. Therefore, based on these spectroscopic data, compound 2 was identified as 2',6'-dihydroxy-4'-methoxychalcone, trivial name pinostrobin chalcone, previously reported from bark of Lindera umbellate [7]. to be 2′,6′-dihydroxy-3′, 4′-dimethoxychalcone, trivial name pashanone (3), a compound previously isolated from Polygonum ferrugineum and Polygonum hydropiper [8,9].…”

Section: Resultsmentioning

confidence: 94%

Antimicrobial Chalcones from the Seeds of Persicaria lapathifolia

Hailemariam¹,

Feyera²,

Deyou³

et al. 2018

Biochem Pharmacol

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Bioassay-guided sequential extraction of the seeds of Persicaria lapathifolia followed by chromatographic separations resulted in the identification of three chalcones; flavokawain B (1), pinostrobin chalcone (2) and pashanone (3). The structures of the isolated compounds were established based on NMR and MS spectroscopic data. Disk diffusion method was employed to evaluate the antibacterial and antifungal activities of the isolated compounds against two bacterial and four fungal strains. The chloroform extract and the compounds demonstrated significant antibacterial activities. Compound 2 showed the highest activity against Staphylococccus aureus bacterial strain and Trichoderma spp fungal strain. Its antifungal activity (22 mm) against Trichoderma spp is even greater than that of the reference drug, clotrimazole (20 mm).

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A chalcone derivative from the bark of Lindera umbellata

Cited by 12 publications

References 20 publications

Variation in Contents of Main Active Components and Antioxidant Activity in Leaves of Different Pigeon Pea Cultivars during Growth

Variation in Contents of Main Active Components and Antioxidant Activity in Leaves of Different Pigeon Pea Cultivars during Growth

Antifungal and Antibacterial Chalcones fromMyrica serrata

Antimicrobial Chalcones from the Seeds of Persicaria lapathifolia

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