Comparison in the γ-Lactone Content of Oils and Extracts from White Cypress Pine (<i>Callitris glaucophylla</i>Thompson &amp; Johnson)

Doimo, Luigino; Fletcher, Robert J.; D'Arcy, B. R.

doi:10.1080/10412905.1999.9701173

Cited by 14 publications

(7 citation statements)

References 10 publications

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“…-lactones [19] are also present and aid termite resistance [20]. Guaiol and azulenes have higher relative abundances in the essential oils, while costols and 3 of 16 ers of Callitris predominantly consist of guaiol [17], along with other es [18], which are responsible for the blue colour of material referred il (guaiazulene, chamazulene).…”

Section: Chemistry Of South African Widdringtoniamentioning

confidence: 99%

“…Costols [18] and ƴ-lactones [19] are also ance [20]. Guaiol and azulenes have higher relative abundances in the d ƴ-lactones are more strongly represented in solvent extracts [20] due A recent study of Callitris spp. also reported diterpene acids using mass the resins [21].…”

Section: Chemistry Of South African Widdringtoniamentioning

confidence: 99%

“…-lactones are more strongly represented in solvent extracts [20] due to their higher boiling points. A recent study of Callitris spp.…”

Section: Chemistry Of South African Widdringtoniamentioning

confidence: 99%

“…Essential oils from timbers of Callitris predominantly consist of guaiol [17], along with other sesquiterpenes such as azulenes [18], which are responsible for the blue colour of material referred to as C. intratropica essential oil (guaiazulene, chamazulene). Costols [18] and ƴ-lactones [19] are also present and aid termite resistance [20]. Guaiol and azulenes have higher relative abundances in the essential oils, while costols and ƴ-lactones are more strongly represented in solvent extracts [20] due to their higher boiling points.…”

Section: Introductionmentioning

confidence: 99%

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New Labdanes with Antimicrobial and Acaricidal Activity: Terpenes of Callitris and Widdringtonia (Cupressaceae)

et al. 2020

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In spite of the evidence for antimicrobial and acaricidal effects in ethnobotanical reports of Callitris and Widdringtonia, the diterpene acids from Widdringtonia have never been described and no comparison to the Australian clade sister genus Callitris has been made. The critically endangered South African Clanwilliam cedar, Widdringtonia wallichii (syn. W. cedarbergensis), of the Cederberg Mountains was once prized for its enduring fragrant timbers and an essential oil that gives an aroma comparable to better known Mediterranean cedars, predominantly comprised by widdrol, cedrol, and thujopsene. In South Africa, two other ‘cedars’ are known, which are called W. nodiflora and W. schwarzii, but, until now, their chemical similarity to W. wallichii has not been investigated. Much like Widdringtonia, Callitris was once prized for its termite resistant timbers and an ‘earthy’ essential oil, but predominantly guaiol. The current study demonstrates that the essential oils were similar across all three species of Widdringtonia and two known non-volatile diterpene acids were identified in leaves: the pimaradiene sandaracopimaric acid (1) and the labdane Z-communic acid (2) with a lower yield of the E-isomer (3). Additionally, in the leaves of the three species, the structures of five new antimicrobial labdanes were assigned: 12-hydroxy-8R,17-epoxy-isocommunic acid (4), 8S-formyl-isocommunic acid (5), 8R,17-epoxy-isocommunic acid (6), 8R-17R-epoxy-E-communic acid (7), and 8R-17-epoxy-E-communic acid (8). Australian Callitris columellaris (syn. C. glaucophylla) also produced 1 and its isomer isopimaric acid, pisiferal (9), and pisiferic acid (10) from its leaves. Callitris endlicheri (Parl.) F.M.Bailey yielded isoozic acid (11) as the only major diterpene. Diterpenes 4–6, pisiferic acid (10), spathulenol, and guaiol (12) demonstrated antimicrobial and acaricidal activity.

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Section: Chemistry Of South African Widdringtoniamentioning

confidence: 99%

Section: Chemistry Of South African Widdringtoniamentioning

confidence: 99%

“…-lactones are more strongly represented in solvent extracts [20] due to their higher boiling points. A recent study of Callitris spp.…”

Section: Chemistry Of South African Widdringtoniamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New Labdanes with Antimicrobial and Acaricidal Activity: Terpenes of Callitris and Widdringtonia (Cupressaceae)

et al. 2020

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“…The compounds found by GC in the different essential oils were identified by comparing their retention indices with those of reference compounds in the literature. Their identities were further confirmed using GC/MS and comparing their mass spectra with those of reference substances [22][23][24][25][26].…”

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confidence: 99%

Phytochemical Screening of Pentadesma butyracea Sabine (Clusiaceae) Acclimated in Benin by GC/MS

Noudogbessi

Natta

Tchobo

et al. 2013

ISRN Analytical Chemistry

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The results brought back at the end of this work concerned various chemical constituents of P. butyracea materials collected in seven forest galleries in northern of Benin. The phytochemical analysis showed mucilage, coumarins, gallic tannins, flavones, sterols, and saponins, in its leaves. The cyclohexanic fractions realized from petroleum ether extracts and analysed by GC/MS were marked by important rates of 9, 19-cyclolanost-24-en-3 -3-ol (49.3-72.6%), taraxasterol (18.4-30.1%), and friedooleanan-3-one (10.0%). Essential oils extracted by hydrodistillation from P. butyracea and analyzed by GC/MS contained 11 to 38 compounds representing 85.2 to 99.5% of the weight of this volatile extracts essentially rich in sesquiterpene constituents. The essential oils predominant compounds (>10%) identified and recorded independently of the organ studied were -caryophyllene (14.9-77.9%), aromadendrene (43

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Antifungal Activity of the Essential Oils of Callitris neocaledonica and C. sulcata Heartwood (Cupressaceae)

Waikedre¹,

Vitturo

Molina

et al. 2012

Chemistry & Biodiversity

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Mortality due to fungal infections has increased substantially, becoming a worldwide problem in public health. As a contribution to the discovery of new antifungal agents, the properties of the heartwood essential oils of two trees growing in New Caledonia, Callitris neocaledonica and C. sulcata (Cupressaceae) were investigated. The essential oils extracted by hydrodistillation were characterized by GC-FID and GC/MS analyses. From C. neocaledonica oil, 31 constituents were identified, representing 97.0% of the total oil composition, which was mainly constituted by oxygenated sesquiterpenes (88%). Among them, guaiol (1; 30.2%), bulnesol (2; 12.5%), α-eudesmol (3; 10.5%), β-eudesmol (4; 10.5%), γ-eudesmol (10.2%), and elemol (4.9%) predominated. The chemical composition of C. sulcata oil, from which 39 constituents were identified (96.8% of the total oil composition), showed some similarities with that of C. neocaledonica oil. The major constituents were also oxygenated sesquiterpenes, accounting for 78.5% of the oil, amongst them, mainly compounds 1 (16.1%), 3 and 4 (9.7% each), as well as 2 (7.4%). The antifungal activity of the oils against clinical isolates of four dermatophytic fungi (Trichophyton mentagrophytes, T. rubrum, Microsporum canis, and M. gypseum) and six yeasts (Candida albicans, C. parapsilosis, C. glabrata, C. krusei, Cryptococcus neoformans, and Cryptococcus gattii) was tested by determining minimum inhibitory concentrations (MICs) using the microdilution method. The best antifungal activities of the C. neocaledonica and C. sulcata oils were obtained against C. krusei (MICs of 3.9 and 0.975 μg/ml, resp.). These MIC values were similar to those of the reference drugs itraconazole and fluconazole (1.0 and 0.5 mg/ml, resp.). The oils were also subjected to a screening for their possible DPPH(.) (2,2-diphenyl-1-picrylhydrazyl) radical-scavenging activity. C. neocaledonica essential oil was more active than C. sulcata oil (93.3 vs. 32.2% DPPH(.) scavenged at 250 μg/ml).

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Comparison in the γ-Lactone Content of Oils and Extracts from White Cypress Pine (Callitris glaucophyllaThompson & Johnson)

Cited by 14 publications

References 10 publications

New Labdanes with Antimicrobial and Acaricidal Activity: Terpenes of Callitris and Widdringtonia (Cupressaceae)

New Labdanes with Antimicrobial and Acaricidal Activity: Terpenes of Callitris and Widdringtonia (Cupressaceae)

Phytochemical Screening of Pentadesma butyracea Sabine (Clusiaceae) Acclimated in Benin by GC/MS

Antifungal Activity of the Essential Oils of Callitris neocaledonica and C. sulcata Heartwood (Cupressaceae)

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