Journal ArticleDOI
Kolavane and kaurane diterpenes from the stem bark of Xylopia aethiopica
TLDR
The stem bark of Xylopia aethiopica has yielded four diterpenes, two of them novel as discussed by the authors, including (−)-kaur-16-en-19-oic acid and its 7-oxo and 7β-hydroxy derivatives.About:
This article is published in Phytochemistry.The article was published on 1982-01-01. It has received 64 citations till now. The article focuses on the topics: Xylopia aethiopica & Annonaceae.read more
Citations
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Occurrence, Biological Activities and Synthesis of Kaurane Diterpenes and their Glycosides
TL;DR: This paper presents a review on kaurane diterpenes and their glycoside derivatives, covering aspects of their occurrence, biological activities and the synthesis of these natural products and their analogues.
Journal ArticleDOI
Termite antifeedant activity in Xylopia aethiopica
TL;DR: Six ent-kaurane diterpenes in the hexane extract of Xylopia aethiopica fruits and an aqueous methanol extract of the seeds were studied for termite antifeedant activity against workers of the subterranean termite, Reticulitermes speratus.
Journal ArticleDOI
Isolation and Phytotoxicity of Terpenes from Tectona grandis
TL;DR: A study was carried out on the allelopathic potential of four forest species, Tectona grandis, Aleurites fordii, Gliricidia sepium, and Maytenus buxifolia, and a new compound, abeograndinoic acid, was isolated, and elucidation of its structure showed that this compound has an unusual carbon skeleton.
Journal ArticleDOI
Stereochemistry of cis-clerodane diterpenes
Shunichi Manabe,Chikao Nishino +1 more
TL;DR: In this article, a nonsteroidal conformation was assigned to piscicidal solidagolactones [IV, V, VII and VIII (1~4, cis -clerodane diterpenes)] isolated from Solidago altissima, based on chemical and physicocheaical evidence.
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Kauren-19-oic acid induces DNA damage followed by apoptosis in human leukemia cells.
Bruno C. Cavalcanti,Daniel P. Bezerra,Hemerson Iury Ferreira Magalhães,Manoel Odorico de Moraes,Mary Anne S. Lima,Edilberto R. Silveira,Cláudio Augusto Gomes da Câmara,Vietla Satyanarayana Rao,Cláudia Pessoa,Letícia V. Costa-Lotufo +9 more
TL;DR: It is concluded that KA, although demonstrating cytotoxic potential, may have a limited or poor therapeutic potential due to lack of selectivity to tumor cells and the mechanism of the new derivatives are currently in progress.
References
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Journal ArticleDOI
13C-NMR. Spectroscopy of Naturally Occurring Substances. XXXV. Labdanic diterpenes
TL;DR: In this paper, a total carbon shift analysis of several representatives of the labdane diterpene family of natural products is presented, based on the prior shift designation of some synthetic trans-decalin derivatives.
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The chemistry of the Euphorbiaceae. VII. The diterpenes of Ricinocarpus stylosus Diels
CA Henrick,PR Jefferies +1 more
TL;DR: The ether extract of Ricinocarpus stylosus has yielded polyalthic acid, three new naturally occurring flavonoid pigments and four new kauranoid diterpenes as mentioned in this paper.
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Diterpenes from sideritis sicula ucria
TL;DR: In this article, two new diterpenes, sideridiol C 20 H 32 O 2 and siderol C 22 H 34 O 3, were extracted from the corols of Sideritis sicula Ucria (Fam. Labiatae).
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Diterpenes and tetranorditerpenes from Acritopappus species
TL;DR: The investigation of four Acritopappus species afforded twenty-three new diterpenes of the labdane or kolavane type and three tetranorditerbenes as well as two benzofuran derivatives and a hydroxybicyclogermacrene as mentioned in this paper.
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Thirteen kolavane derivatives from Symphyopappus species
TL;DR: The aerial parts of Symphyopappus compressus afrorded three new kolavane derivatives and those of S. reticulatus ten diterpenes of this type, two of them esterified with long chain fatty acids, was present in both species.