Foliage diterpenes of Dacrydium Intermedium: identification, variation and biosynthesis

Perry, Nigel B.; Weavers, Rex T.

doi:10.1016/0031-9422(85)80023-6

Cited by 21 publications

(5 citation statements)

References 23 publications

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“…Although the analytical technique cannot distinguish stereo-isomers compounds produced in leaves (Cool et al, 1998;Perry and Weavers, 1985;Railton et al, 1984), the kaur-16-ene detected in this study is most likely to be ent-kaurene. The emission rate of kaur-16-ene was estimated to be comparable to total monoterpene emission, a group of commonly emitted BVOCs, and also to total anthropogenic VOC emission in Japan in summer.…”

Section: Gc-ms Analysismentioning

confidence: 94%

Determination and potential importance of diterpene (kaur-16-ene) emitted from dominant coniferous trees in Japan

et al. 2012

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Reactive volatile organic compounds (VOCs) are known to affect atmospheric chemistry. Biogenic VOCs (BVOCs) have a significant impact on regional air quality due to their large emission rates and high reactivities. Diterpenes (most particularly, kaur-16-ene) were detected in all of the 205 enclosure air samples collected over multiple seasons at two different sites from Cryptomeria japonica and Chamaecyparis obtusa trees, the dominant coniferous trees in Japan,. The emission rate of kaur-16-ene, was determined to be from 0.01 to 7.1 μg dwg -1 h -1 (average: 0.61 μg dwg -1 h -1 ) employing branch enclosure measurements using adsorbent sampling followed by solid phase -liquid extraction techniques. The emission rate was comparable to that of monoterpenes, which is known major BVOC emissions, collected from the same branches. In addition, total emission of kaur-16-ene at 30 ºC was estimated to exceed that of total anthropogenic VOC emissions.

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Section: Gc-ms Analysismentioning

confidence: 94%

Determination and potential importance of diterpene (kaur-16-ene) emitted from dominant coniferous trees in Japan

et al. 2012

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“…This may arise through the occurrence of two different types cyclases, cyclase I ("retro"), which leads from geranylgeranyl diphosphate to (+)-labdadienyl diphosphate, and cyclase II, which leads from geranylgeranyl diphosphate to (-)-labdadienyl diphosphate. For example, the enantiomers 3 and 4 occur in the resin of Eperua purpurea [14], the normal labdandiol 6 and antipodal ent-labdenol 5 in the leaves of the Brazilian medicinal plant Mimosa hostilis and ent-sclarene 7 and 8 sclarene have been isolated from different specimens of Dacridium intermedium [15]. The co-occurrence of enantiomeric labdanes, is discussed by Carman and Duffield [16].…”

Section: Labdane Type Diterpenes-biosynthesismentioning

confidence: 97%

“…Manoyl oxide and forskolin can activate adenylated cyclase enzyme system (AC), while other derivatives of manoyl oxides, naturally occurring, semi and/or synthetic or biotransformated by the microorganisms Curvularia lunata exhibit comparable bioactivities [15,156].…”

Section: Adenylated Cyclase Enzyme System (Ac)mentioning

confidence: 99%

Labdanes of Natural Origin-Biological Activities (1981-2004)

Chinou

2005

CMC

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Terpenoids is a class of natural compounds found in higher plants, mosses, liverworts, algae and lichens, as well as in insects, microbes or marine organisms. Through centuries many of these compounds have been used as ingredients of perfumes, drugs, narcotics or pigments. Labdanes, belonging to the bicyclic diterpenoids group, have been found as secondary metabolites in tissues of fungi, insects, marine organisms, and in essential oils, resins and tissues of higher plants. The diterpenes of labdane type, have been reported to have broad spectrum of biological activities. In this study, the reported bioactivities and/or uses of them, the last two decades (1981-2004), are selected as an attempt to underline their role in nature.

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“…Dacrydium intermedium t. kirk ,82 Araucaria bidwillii ,63 Araucaria araucana ,63 Araucaria heterophylla 63…”

Section: Terpeneunclassified

Enantiomere Naturstoffe: Vorkommen und Biogenese

et al. 2012

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In der Natur werden chirale Substanzen meist in enantiomerenreiner Form synthetisiert – manchmal entstehen aber auch beide Enantiomere. Solche enantiomeren Naturstoffe können von einer Art oder von verschiedenen Gattungen und/oder Arten gebildet werden. Intensive Forschungen wurden über viele Jahre durchgeführt, um die Biogenese natürlich vorkommender Enantiomere zu verstehen, doch viele faszinierende Rätsel und stereochemische Anomalien sind nach wie vor ungelöst.

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Foliage diterpenes of Dacrydium Intermedium: identification, variation and biosynthesis

Cited by 21 publications

References 23 publications

Determination and potential importance of diterpene (kaur-16-ene) emitted from dominant coniferous trees in Japan

Determination and potential importance of diterpene (kaur-16-ene) emitted from dominant coniferous trees in Japan

Labdanes of Natural Origin-Biological Activities (1981-2004)

Enantiomere Naturstoffe: Vorkommen und Biogenese

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