Wood essential oils of two endemic trees from New Caledonia: Callitris sulcata (Parl.) Schltr. and Callitris neocaledonica Dummer

Hnawia, Edouard; Menut, Chantal; Agrebi, Abdelhamid; Cabalion, Pierre

doi:10.1016/j.bse.2008.08.007

Cited by 13 publications

(4 citation statements)

References 23 publications

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“…In New Caledonia, six species of Cupressaceae have been described, some of them being among the rarest conifer species [10], and among them, only two species are endemic (C. sulcata and C. neocaledonica) [11]. Recently, the chemical composition of the essential oil was studied [13]. Traditionally, the cypress-pine was used in the construction of wooden houses, as posts made of gniè (vernacular name of C. sulcata in xâ râ guré language, Thio region), as it is not subject to rotting and attacked neither by insects nor by fungi.…”

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confidence: 99%

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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confidence: 99%

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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“…Indeed, C. sulcata is exceptionally durable (Compton, 1922) and because of the essential oils it contains (Hnawia et al, 2008) it is resistant to decay, termites and fungal attack (Cabalion et al, 2003). Traditionally, the Borendi district tribes closely regulated the harvest of C. sulcata trees, but illegal harvesting has recently occurred (Haverkamp et al, 2013).…”

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Effect of landscape fires on the demography of the endangered New Caledonian conifer Callitris sulcata

Haverkamp

Prior

Fogliani

et al. 2015

Biological Conservation

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“…6 ar-Tenuifolene has also been identified in the essential oils of Radula perrottetii 7 and Callitris sulcata. 8 The first and only synthesis of (±)-ar-tenuifolene was reported by Srikrishna and Beeraiah in 2005. 9 These researchers proposed using a key ring-closing metathesis (RCM) step to form the cyclohexene moiety.…”

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confidence: 98%

An efficient total synthesis of (±)-ar-tenuifolene

Vázquez-Sánchez

Ávila-Zárraga

2015

Tetrahedron Letters

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Wood essential oils of two endemic trees from New Caledonia: Callitris sulcata (Parl.) Schltr. and Callitris neocaledonica Dummer

Cited by 13 publications

References 23 publications

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

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

Effect of landscape fires on the demography of the endangered New Caledonian conifer Callitris sulcata

An efficient total synthesis of (±)-ar-tenuifolene

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