Notiz über das Vorkommen von 4′,5‐Dihydroxy‐3,3′,6,7‐tetramethoxyflavon (Chrysosplenetin) in <i>Plectranthus marrubioides</i> H<scp>OCHST</scp> (<i>Labiatae</i>)

Hensch, Marcel; Eugster, C. H.

doi:10.1002/hlca.19720550522

Cited by 13 publications

(2 citation statements)

References 4 publications

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“…Flavonoids seem to be rare in Plectranthus . Only two flavonoids were identified, 4',7-dimethoxy-5,6-dihydroxyflavone ( M10 ) from P. ambiguus [ 33 ] and chrysosplenetin ( M11 ) from P. marruboides [ 34 ]. From P. mollis (= P. incanus ), Mahmoud et al reported the isolation of vernolic and cyclopropenoid fatty acids [ 35 ].…”

Section: Miscellaneous Constituentsmentioning

confidence: 99%

Chemistry of the Genus Plectranthus

2002

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This review presents the phytochemical constituents of the genus Plectranthus reported up to 1999. Only a tetrameric derivative of caffeic acid was isolated from P. japonicus, but a group of long-chain alkylphenols, of possible taxonomic significance in the genus, was also isolated. As a genus of the subfamily Nepetoideae, Plectranthus is free from iridoid glycosides and rich in essential oil (i.e. > 0.5% volatile oil on a dry weight basis). Diterpenoids are the more common secondary metabolites in Plectranthus. The majority of them are highly modified abietanoids. This seems to be similar to the pattern of diterpenoids observed for Salvia, but no clerodane diterpenoids were found in Plectranthus.

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Section: Miscellaneous Constituentsmentioning

confidence: 99%

Chemistry of the Genus Plectranthus

2002

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“…Furthermore, extensive phytochemical investigation on different species of Plectranthus revealed that diterpenoids are the main chemical constituents of the genus Plectranthus besides the essential oils (12,2). Other constituents found are triterpenoids (13,), steroids (14,), phenolics (15), flavonoids (16,17) and fatty acids (2,4). In Saudi Arabia, genus Plectranthus is comprised of nine naturally growing aromatic flowering plant species, which are often locally used in traditional medicinal practices, as ornamental and perfumery products (18).…”

Section: Introductionmentioning

confidence: 99%

Sequential injection-chemiluminescence evaluation of stigmasterol glucoside and luteolin via green synthesis of silver nanoparticles using biomass of plectranthus asirensis

Amina

Alarfaj

El‐Tohamy

et al. 2018

Green Chemistry Letters and Reviews

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The present study focused on the phytochemical chromatographic isolation of two chemical constituents, sterol and flavonoid (stigmasterol glucoside and luteolin) from Plectranthus asirensis. A novel, eco-friendly, and cost benefit, ultrasensitive sequential injection analysis chemiluminescence (SIA-CL) approach based on the enhanced catalytic activity of silver nanoparticles (AgNPs) was suggested to evaluate the isolated compounds. Silver nanoparticles were synthesized using the biomass of an ethanolic extract of aerial parts of P. asirensis as a reducing agent. Spectroscopic and microscopic characterization of the prepared AgNPs were performed, including UV-Vis spectrometry, XRD and FT-IR as well as TEM and SEM. UVspectroscopic method detected the formed AgNPs at an absorbance wavelength of 420 nm. Furthermore, antioxidant activity of the isolated compounds was also determined using 1,1-Diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity protocol.

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ChemInform Abstract: VORKOMMEN VON 4′,5‐DIHYDROXY‐3,3′,6,7‐TETRAMETHOXY‐FLAVON (CHRYSOSPLENETIN) IN PLECTRANTHUS MARRUBIOIDES HOCHST (LABIATAE)

Hensch¹,

Eugster²

1972

Chemischer Informationsdienst

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Notiz über das Vorkommen von 4′,5‐Dihydroxy‐3,3′,6,7‐tetramethoxyflavon (Chrysosplenetin) in Plectranthus marrubioides HOCHST (Labiatae)

Abstract: Chrysosplenetin (4′, 5‐dihydroxy‐3,3′, 6,7‐tetramethoxyflavon) has been isolated from the leaves of Plectranthus marrubioides HOCHST (Labiatae).

Cited by 13 publications

References 4 publications

Chemistry of the Genus Plectranthus

Chemistry of the Genus Plectranthus

Sequential injection-chemiluminescence evaluation of stigmasterol glucoside and luteolin via green synthesis of silver nanoparticles using biomass of plectranthus asirensis

ChemInform Abstract: VORKOMMEN VON 4′,5‐DIHYDROXY‐3,3′,6,7‐TETRAMETHOXY‐FLAVON (CHRYSOSPLENETIN) IN PLECTRANTHUS MARRUBIOIDES HOCHST (LABIATAE)

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