Labdane diterpenes from the rhizomes of Hedychium coronarium

Chimnoi, Nitirat; Pisutjaroenpong, Somchai; Ngiwsara, Lukana; Dechtrirut, Decha; Chokchaichamnankit, Daranee; Khunnawutmanotham, Nisachon; Mahidol, Chulabhorn; Techasakul, Supanna

doi:10.1080/14786410701726434

Cited by 58 publications

(41 citation statements)

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“…The signals in the low field region of the 1 H and 13 C spectra of 1 which displayed resonances ascribed to a β-olefinic proton at δ H 7.07 (t, J = 7.1 Hz, H-12; δ C 153.4, C-12), an oxymethine proton at δ H 6.06 (d, J = 4.6 Hz, H-15; δ C 100.6, C-15), a quaternary olefinic carbon at δ C 123.2 (C-13), and a lactonic carbonyl at δ C 166.8 (C-16), were all assigned to the α,β-unsaturated γ-lactone ring of partial structure 1a. The above-mentioned spectroscopic data of partial structure 1a were comparable with those of coronarin D [8]. However, there was a significant difference between the α,β-unsaturated γ-lactone rings of both structures.…”

supporting

confidence: 61%

“…Unlike the α,β-unsaturated γ-lactone ring in coronarin D which bore a pair of methylene protons at the C-14 position of its skeleton, the corresponding position of partial structure 1a bore an oxymethine proton instead [δ H 5.31 (brd, J = 4.6 Hz, H-14; δ C 75.2, C-14)]. The large downfield shift (+ 42 ppm) of the C-14 resonance of partial structure 1a upon comparison with the corresponding atom in coronarin D strongly suggested that a hydroxyl group was attached to C-14 [8]. The homonuclear coupling between H-14 and H-15 along with the long range heteronuclear correlations between H-12 with C-14 and C-16 provided full support for this structural feature (Fig.…”

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confidence: 99%

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A New Bis-Labdanic Diterpene from the Rhizomes of Alpinia pahangensis

et al. 2013

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!The rhizomes of Alpinia pahangensis yielded a new bis-labdanic diterpene for which the name pahangensin C (1) was proposed along with twelve known analogues (2-13). The structure of 1 was elucidated via spectroscopic methods including 1D and 2D NMR techniques and LCMS-IT-TOF analysis. Compounds 2 and 12 were isolated for the first time from the genus Alpinia. This is the second occurrence of compounds 2 and 12 in the Zingiberaceae family. Selected analogues exhibited moderate to strong inhibitory activity against Staphylococcus aureus and Bacillus cereus.

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confidence: 61%

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confidence: 99%

A New Bis-Labdanic Diterpene from the Rhizomes of Alpinia pahangensis

et al. 2013

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“…3,4 Diterpenes of H. coronarium showed anti-inflammatory and cytotoxic activities. [4][5][6][7][8] However, less attention has been given to its leaves. In the present study, essential oil, methanolic and aqueous extracts of the leaves and rhizomes of H. coronarium were assayed for their antimicrobial, mosquito larvicidal and antioxidant properties.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial, Mosquito Larvicidal and Antioxidant Properties of the Leaf and Rhizome of Hedychium coronarium

2011

J Chinese Chemical Soc

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The essential oil, methanolic and aqueous extracts of the leaves and rhizomes of Hedychium coronarium Koen. (Zingiberaceae) were assayed for their antimicrobial, mosquito larvicidal and antioxidant properties. The chemical composition of the essential oil of two organs was analyzed by GC/MS analysis. b-Pinene (33.9%), a-pinene (14.7%), 1,8-cineole (13.3%), r-elemene (11.0%) and carotol (9.1%) were the main components in the leaf oil, including 82.0% terpenoid compounds. The major constituents of the rhizome oil were 1,8-cineole (37.3%), b-pinene (23.0%), a-terpineol (10.4%) and apinene (9.9%), comprising 80.6% of the oil. The leaf and rhizome essential oil displayed significant antimicrobial activity, as determined by the disc-diffusion method, inhibiting the growth of all five fungal and four bacterial strains tested. The antimicrobial nature of the essential oil is related to high terpenoid contents. The leaf oil exhibited the mosquito larvicidal activity with 2 h and 24 h LC 50 values of 111 and 90 ppm, respectively, while the rhizome oil showed the larvicidal activity with 2 h and 24 h LC 50 values of 86 and 47 ppm, respectively. b-Pinene, a-pinene and 1,8-cineol in H. coronarium serve as the principal larvicidal components of both oils. The individual antioxidant assays such as DPPH scavenging activity, chelating effect of ferrous ions and reducing power have been used. The present study demonstrated that the polar extracts of H. coronarium possessed anti-oxidant. Appreciable total phenolic content (18.5-26.3 mg/g) was also detected by Folin-Ciocalteu test.

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“…Diterpenes of H. coronarium showed anti-inflammatory and cytotoxic activities [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Quantification of Thiamethoxam in Rhizomes and Leaves of the Hedychium coronarium and Water and Soil by High-Pressure Liquid Chromatography

Rocha¹,

França²,

Cardoso³

2012

AJAC

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The linearity, stability, accuracy and inter-day precisions of the assay method were evaluated in water, soil and rhizomes and leaves of Hedychium coronarium of the Zingiberaceae family. Mato Grosso do Sul is a predominantly agricultural state in Brazil and has many rivers and permanent and seasonal lakes, in which the Hedychium coronarium, an aquatic plant, is found the swampy environments. The prepared samples were analyzed quantitatively by High Performance Liquid Chromatography with PDA and UV detection for the presence of thiamethoxam. The thiamethoxam was recovered from these samples at rates ranging from 81.16% -99.93%. The coefficient of variation in the quantitative analysis of the thiamethoxam was under 5%. The linearity of the method was determined by linear regression. The analysis of the samples spiked with known amounts of analyte demonstrated that the response was proportional to the concentrations of the samples with determination coefficients of r 2 = 0.9992 (water and soil) and r 2 = 0.9990 (leaves and rhizomes) for the linear range of the analytical calibration curves of the samples. The detection limit was 0.36 µg·L -1 and quantification limit was 1.2 µg·L -1 for thiamethoxam. The method was considered sensitive for quantification of the thiamethoxam in water, soil and rhizomes and leaves of Hedychium coronarium.

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Labdane diterpenes from the rhizomes of Hedychium coronarium

Cited by 58 publications

References 12 publications

A New Bis-Labdanic Diterpene from the Rhizomes of Alpinia pahangensis

A New Bis-Labdanic Diterpene from the Rhizomes of Alpinia pahangensis

Antimicrobial, Mosquito Larvicidal and Antioxidant Properties of the Leaf and Rhizome of Hedychium coronarium

Quantification of Thiamethoxam in Rhizomes and Leaves of the <i>Hedychium coronarium</i> and Water and Soil by High-Pressure Liquid Chromatography

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Labdane diterpenes from the rhizomes of Hedychium coronarium

Cited by 58 publications

References 12 publications

A New Bis-Labdanic Diterpene from the Rhizomes of Alpinia pahangensis

A New Bis-Labdanic Diterpene from the Rhizomes of Alpinia pahangensis

Antimicrobial, Mosquito Larvicidal and Antioxidant Properties of the Leaf and Rhizome of Hedychium coronarium

Quantification of Thiamethoxam in Rhizomes and Leaves of the &lt;i&gt;Hedychium coronarium&lt;/i&gt; and Water and Soil by High-Pressure Liquid Chromatography

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Quantification of Thiamethoxam in Rhizomes and Leaves of the <i>Hedychium coronarium</i> and Water and Soil by High-Pressure Liquid Chromatography