Results 251 to 260 of about 52,814 (284)

Marine diterpene glycosides

Bioorganic & Medicinal Chemistry, 2011
Marine diterpene glycosides (MDGs) respresent a small but highly significant group of the much larger class of marine diterpenes. The three well-studied examples of MDGs are eleutherobins, pseudopterosins and fuscosides, all of which exhibit extremely promising biological activity.
Fabrice, Berrué, Malcolm W B, McCulloch, Russell G, Kerr   +2 more
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Cembranoid diterpenes and a briarane diterpene from corals

Natural Product Research, 2006
Two new cembrane diterpenes (+)-polydactylide (1) and (+)-7alpha,8beta-dihydroxydeepoxysarcophine (2) together with (+)-sarcophine (3) and (+)-sarcophytoxide (4) have been isolated from the soft coral Sinularia polydactyla. The new cembrane diterpene (-)-7beta-hydroxy-8alpha-methoxydeepoxysarcophine (5) has been obtained from the soft coral Sarcophyton
Daniela, Grote, Hesham S M, Soliman, Kamel H, Shaker, Mohamed, Hamza, Karlheinz, Seifert   +4 more
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Diterpene and diterpene glycosides from Rabdosia eriocalyx

Phytochemistry, 1989
Abstract An ent -kaurene diterpenoid, maoecrystal K, and its β-glucopyranoside, rabdoside 1, as well as a minor diterpene glycoside, rabdoside 2 were isolated from Rabdosia eriocalyx . The structures of the three compounds were determined by their spectral properties and chemical transformations.
Akira Isogai, Xiaoyu Shen, Kazuo Furihata, Hidetoshi Kaniwa, Handong Sun, Akinori Suzuki   +5 more
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Diterpenes and diterpene xylosides from Conyza trihecatactis

Phytochemistry, 1993
Abstract From the leaves of Conyza trihecatactis we have isolated the labdane-type diterpenes and diterpene xylosides ent-sclareol, ent-3β-hydroxymanool, ent-manool 13-O-β- d -xylopyranoside and ent-sclareol 13-O-β- d -xylopyranoside. Structure elucidation was achieved by spectroscopic methods.
Ruben Torrenegra, Jorge Robles, Reiner Waibel, Matthias Löwel, Hans Achenbach   +4 more
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Bacterial Diterpene Biosynthesis

Angewandte Chemie International Edition, 2019
AbstractThis Minireview summarises recent developments in the biosynthesis of diterpenes by diterpene synthases in bacteria. It is structured by the class of enzyme involved in the first committed step towards diterpenes, starting with type I diterpene synthases, followed by type II enzymes and the more recently discovered UbiA‐related diterpene ...
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Diterpenes from Grangea maderaspatana

Phytochemistry, 2016
Phytochemical investigation of the ethanolic extract of Grangea maderaspatana led to isolation of gramaderins A-D, together with thirteen known compounds. All isolates were assayed for their anti-inflammatory activities. Consequently, 5,7-dihydroxy-3,6,3',4',5'-pentamethoxyflavone and 5,3'-dihydroxy-3,6,7,4',5'-pentamethoxyflavone showed significant ...
Fang-Rong, Chang, Shih-Ting, Huang, Chih-Chuang, Liaw, Ming-Hong, Yen, Tsong-Long, Hwang, Ching-Yeu, Chen, Ming-Feng, Hou, Shyng-Shiou, Yuan, Yuan-Bin, Cheng, Yang-Chang, Wu   +9 more
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Diterpenes from Solidago rugosa

Phytochemistry, 1995
Investigation of the roots and aerial parts of Solidago rugosa afforded the known diterpenes kolavenol, hardwickiic acid, (-)-kaur-16-en-19-oic acid, (+)-manool, (+)-3 beta-hydroxymanool, manoyl oxide and ent-abietic acid. In addition, the new labdane diterpene (+)-18-tigloyloxymanool and four new ent-abietanes were obtained.
T, Lu, D, Vargas, S G, Franzblau, N H, Fischer   +3 more
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Diterpenes from gorgonian corals

Natural Product Reports, 2009
Covering: 1995 to April 2008. Gorgonian corals continue to provide a wealth of novel structures, many of which exhibit potentially useful biological activity. Notably, the families Briareidae, Gorgoniidae and Plexauridae have been demonstrated to contain a wide variety of natural products including steroids, acetogenins, sesquiterpenes and diterpenes ...
Fabrice, Berrue, Russell G, Kerr
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Diterpenes from Marine Opisthobranch Molluscs

Current Organic Chemistry, 2000
Marine opisthobranchs represent a very interesting source of bioactive natural products, which exhibit an extraordinary variety of chemical structures. Opisthobranchs are naked molluscs, apparently unprotected by the physical constrain of a shell. In spite of this, they appear to be free of predation.
Gavagnin M., Fontana A
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Diterpenes; preliminary synthetical experiments

Experientia, 1951
Es wurde die Anwendung der Reimer-Tiemann-Reaktion zur Einfuhrung von angularen Dichlormethylgruppen in Phenanthrenderivate untersucht mit dem Ziel, Ferruginol synthetisch herzustellen.
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