Journal ArticleDOI
ENT-trachylobane diterpenoids from the liverwort Mastigophora diclados
TLDR
The Malaysian liverwort Mastigophora diclados afforded ent -trachyloban-18-oic acid, ent -branch-19-OIC acid and the novel ent -18-hydroxy trachyl-oban 19-Oic acid using 1 H and 13 C NMR spectroscopy as discussed by the authors.About:
This article is published in Phytochemistry.The article was published on 1997-08-01. It has received 30 citations till now.read more
Citations
More filters
Journal ArticleDOI
Chemosystematics of the hepaticae.
TL;DR: Most liverworts (Hepaticae) contain oil bodies which are composed of lipophilic terpenoids and aromatic compounds, and the chemosystematics of 36 families of the Jungermannidae and seven family of the Marchantiidae are discussed using terpenoid and aromatic components.
Journal ArticleDOI
Diterpenes from the leaves of Croton zambesicus
Sébastien Block,Chiara Baccelli,Bernard Tinant,Luc Van Meervelt,Raoul Rozenberg,Jean-Louis Habib Jiwan,Gabriel Llabres,Marie-Claire De Pauw-Gillet,Joëlle Quetin-Leclercq +8 more
TL;DR: Two new trachylobane- and one isopimarane-type diterpenoids are isolated from the leaves of Croton zambesicus, together with trans-phytol, beta-sitosterol, alpha-amyrin and stigmasterol.
Journal ArticleDOI
A Hexacyclic ent-Trachylobane Diterpenoid Possessing an Oxetane Ring from Mitrephora glabra
Chen Li,Dongho Lee,Tyler N. Graf,Sharnelle S. Phifer,Yuka Nakanishi,Jason P. Burgess,Soedarsono Riswan,Fransisca M. Setyowati,Achmad M. Saribi,Djaja D. Soejarto,Norman R. Farnsworth,Joseph O. Falkinham,David J. Kroll,A. Douglas Kinghorn,Mansukh C. Wani,Nicholas H. Oberlies +15 more
TL;DR: Three new ent-trachylobane diterpenoids were isolated and structures elucidated from Mitrephora glabra Scheff, which possesses a hexacyclic ring system with adjacent ketone moieties and an oxetane ring, both of which are unprecedented among trachyloblanes.
Journal ArticleDOI
Use of Zanzibar copal (Hymenaea verrucosa Gaertn.) as incense at Unguja Ukuu, Tanzania in the 7–8th century CE: chemical insights into trade and Indian Ocean interactions
Alison Crowther,Margaret Ashley Veall,Margaret Ashley Veall,Nicole Boivin,Mark Horton,Anna M. Kotarba-Morley,Anna M. Kotarba-Morley,Dorian Q. Fuller,Thomas R. Fenn,Othman Haji,Carney D. Matheson,Carney D. Matheson +11 more
TL;DR: The results obtained from this study provide the first direct archaeological evidence for the ancient use of this East African species as an aromatic, suggesting that it might have had a much earlier role in long-distance incense trade than previously demonstrated.
Journal ArticleDOI
Bioactive Constituents of the Stem Bark of Mitrephora glabra
Chen Li,Dongho Lee,Tyler N. Graf,Sharnelle S. Phifer,Yuka Nakanishi,Soedarsono Riswan,Fransisca M. Setyowati,Achmad M. Saribi,Djaja D. Soejarto,Norman R. Farnsworth,Joseph O. Falkinham,David J. Kroll,A. Douglas Kinghorn,Mansukh C. Wani,Nicholas H. Oberlies +14 more
TL;DR: Bioactivity-guided fractionation of the stem bark of Mitrephora glabra yielded nine compounds, comprising three ent-kaurenoids, five polyacetylenic acids/esters, and one aporphine alkaloid, liriodenine.
References
More filters
Journal ArticleDOI
New pentacyclic diterpene acid
TL;DR: A trachylobane derivative, tracheyloban-19-oic acid (IIIa) together with the biogenetically related (−)-kaur-16-en-19 OIC acid (Ia) was isolated from the flowers of Helianthus annuus L. as discussed by the authors.
Journal ArticleDOI
Kaurane and trachylobane diterpenes from Xylopia aethiopica
TL;DR: In this paper, 13C NMR assignments of 15-hydroxy-(-)- trachyloban-19-oic acid and the assignment of the configuration of its hydroxyl group at C-15 have been carried out for the first time.
Journal ArticleDOI
Terpenoids and aromatic compounds from selected East Malaysian liverworts
TL;DR: Nine East Malaysian liverworts have been investigated chemically and Mastigophora species are chemically almost identical to those of Herbertus because both genera produce unique isocuparene-type sesquiterpenoids and isoc uparene dimers.
Journal ArticleDOI
The trachylobane diterpenes
TL;DR: The natural occurrence, biosynthesis, chemistry and synthesis, spectroscopic properties and bioactivity of trachylobane diterpenes have been reviewed in this paper, where the authors also present a review of the properties of diterbenes.
Journal ArticleDOI
Biotransformation of Tryptamine to Serotonin by Cell Suspension Cultures of Peganum harmala.
TL;DR: Cell suspension cultures of P. HARMALA, unable to form serotonin DE-NOVO, hydroxylated fed tryptamine to serotonin independently of the growth cycle up to 20 mg per g dry mass per day and a maximum yield of 800 mg serotonin/l was achieved.