A New Clerodane-Type Butenolide Diterpene from the Bark of Polyalthia longifolia

Chakrabarty, Manas; Nath, A.

doi:10.1021/np50080a021

Cited by 22 publications

(14 citation statements)

References 3 publications

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“…The plant has been used in traditional system of medicine for the treatment of fever, skin diseases, diabetes, hypertension and helminthiasis [33]. A number of biologically active compounds have been isolated from this plant [34][35][36]. The plant extract and isolated compounds were studied for various biological activities like antibacterial activity, cytotoxicity, antifungal activity [37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

The Inhibition of Mild Steel Corrosion in an Acidic Medium by the Aqueous Extract of Leaves of Polyalthia Longifolia

Chinyem

Ogbeifun

Edema

2014

Port. Electrochim. Acta

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The inhibitive effect of aqueous extract of leaves of Polyalthia longifolia on the corrosion of mild steel was studied using the gravimetric (weight loss) method at the temperatures 303 and 318 K. The results show that the aqueous extract of Polyalthia longifolia leaves inhibited the corrosion of mild steel in dilute H 2 SO 4 solution. It was found that the inhibition efficiency increased with inhibitor concentration and decreased with rise in temperature. Values of the activation energy of the inhibited corrosion reaction range between 45.40 kJ/mol and 62.22 kJ/mol. This is much higher than the 25.74 kJ/mol obtained for the blank. The adsorption of the extract was spontaneous and occurs according to Flory-Huggins adsorption isotherm. The corrosion inhibition of Polyalthia longifolia leaves extract was attributed to the adsorption of phytochemical molecules present in the extract onto the surface of the mild steel. Physical adsorption mechanism has been proposed for the adsorption of the inhibitor.

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Section: Introductionmentioning

confidence: 99%

The Inhibition of Mild Steel Corrosion in an Acidic Medium by the Aqueous Extract of Leaves of Polyalthia Longifolia

Chinyem

Ogbeifun

Edema

2014

Port. Electrochim. Acta

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“…Thymonin (92) was isolated from Salvia thymoide [72]. The methoxybutenolide 93 was extracted from the bark of Polyalthia longifolia [73]. During an examination of pesticidial plants, the relative cleroinermin (94) was obtained from Clerodendron inermi (Verbenaceae).…”

Section: Clerodane Frameworkmentioning

confidence: 99%

Diterpene Lactones with Labdane, Halimane and Clerodane Frameworks

Silva

Gomes

Rodilla

2011

Natural Product Communications

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The labdane, halimane and clerodane type diterpenoids are compounds that have been isolated in plants of several families. These molecules and their derivatives with a lactone group on the side chain or on the decaline system, have a great interest because of their biological properties as insect antifeedant, antiviral, cytotoxic and trypanocidal. The scope of this review is lactones diterpenoids with labdane, halimane and clerodane frameworks.

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“…[ 6 15 18 19 ] Although these compounds have not been analyzed in P. longifolia , other compounds such as liriodenine, noroliveroline, oliveroline-f3-N-oxide, duorene alkaloids, polyfothine, and clerodane diterpenoids have been reported. [ 20 21 22 ] Among these, CATs are well reported for various kinds of biological activities and are reported to be useful for the symptomatic treatment of several gastrointestinal, respiratory and vascular diseases. [ 18 23 ] Chemoprofiling is now an essential and standard practice for quality control.…”

Section: Introductionmentioning

confidence: 99%

Resolving identification issues of Saraca asoca from its adulterant and commercial samples using phytochemical markers

Hegde

Jalalpure

et al. 2017

Phcog Mag

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Saraca asoca (Roxb.) De Wilde (Ashoka) is a highly valued endangered medicinal tree species from Western Ghats of India. Besides treating cardiac and circulatory problems, S. asoca provides immense relief in gynecological disorders. Higher price and demand, in contrast to the smaller population size of the plant, have motivated adulteration with other plants such as Polyalthia longifolia (Sonnerat) Thwaites. The fundamental concerns in quality control of S. asoca arise due to its part of medicinal value (Bark) and the chemical composition. Phytochemical fingerprinting with proper selection of analytical markers is a promising method in addressing quality control issues. In the present study, high-performance liquid chromatography of phenolic compounds (gallic acid, catechin, and epicatechin) coupled to multivariate analysis was used. Five samples each of S. asoca, P. longifolia from two localities alongside five commercial market samples showed evidence of adulteration. Subsequently, multivariate hierarchical cluster analysis and principal component analysis was established to discriminate the adulterants of S. asoca. The proposed method ascertains identification of S. asoca from its putative adulterant P. longifolia and commercial market samples. The data generated may also serve as baseline data to form a quality standard for pharmacopoeias.SUMMARY Simultaneous quantification of gallic acid, catechin, epicatechin from Saraca asoca by high-performance liquid chromatographyDetection of S. asoca from adulterant and commercial samplesUse of analytical method along with a statistical tool for addressing quality issues. Abbreviations used: HPLC: High Performance Liquid Chromatography; RP-HPLC: Reverse Phase High Performance Liquid Chromatography; CAT: Catechin; EPI: Epicatechin; GA: Gallic acid; PCA: Principal Component Analysis.

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A New Clerodane-Type Butenolide Diterpene from the Bark of Polyalthia longifolia

Cited by 22 publications

References 3 publications

The Inhibition of Mild Steel Corrosion in an Acidic Medium by the Aqueous Extract of Leaves of Polyalthia Longifolia

The Inhibition of Mild Steel Corrosion in an Acidic Medium by the Aqueous Extract of Leaves of Polyalthia Longifolia

Diterpene Lactones with Labdane, Halimane and Clerodane Frameworks

Resolving identification issues of Saraca asoca from its adulterant and commercial samples using phytochemical markers

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