Results 161 to 170 of about 918 (174)

Cyclized Cembranoids of Natural Occurrence

1992
The structure of eunicillin (89), a carbobicyclic diterpenoid isolated from the Mediterranean gorgonian Eunicella stricta, was reported in 1968 (1). At that time chlorine-containing diterpenoids had been discovered in the gorgonian Briareum asbestinum (2, 3), but it was not until 1977 that the structure of the first briaran, briarein A (211), was ...
I. Wahlberg, A.-M. Eklund
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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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A semi-synthetic analog of the cembranoid sarcophine

Acta Crystallographica Section C Crystal Structure Communications, 2003
The title molecule, 2(R)-[(1E,3E,7S,8S,11E,13R)-13-hydroxy-4,8,12-trimethyl-7,8-epoxycyclotetradeca-1,3,11-trien-1-yl]propane-1,2-diol, C(20)H(32)O(4), is a semi-synthetic analog of sarcophine, the natural cembranoid of marine origin, isolated from the soft coral Sarcophyton glaucum.
Hesham, Fahmy, Jordan K, Zjawiony, Sherief, Khalifa, Frank R, Fronczek   +3 more
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Survey of 2,11-cyclized cembranoids from Caribbean sources

Natural Product Research, 2009
This review covers the literature published since the report of the first compound to December 2006, for marine natural 2,11-cyclized cembranoids isolated from Caribbean sources, with 30 citations, most of them from 2000 to 2006, referring to compounds isolated from the Caribbean gorgonian octocorals Briareum asbestinum, Briareum polyanthes, and ...
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Polycyclic diterpenoids biogenetically related to the cembranoids

Chemistry of Natural Compounds, 1987
This review describes cyclocembrane compounds isolated from plants, marine organisms, and insects. A systematization of cyclized diterpenoids according to the types of carbon skeletons is given.
V. A. Raldugin, S. A. Shevtsov
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ChemInform Abstract: Cyclic Cembranoids of Natural Occurrence.

ChemInform, 1994
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
I. WAHLBERG, A.‐M. EKLUND
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Cytotoxic cembranoids from the gorgonian pseudopterogorgia bipinnata

Tetrahedron Letters, 1989
Abstract Four new cytotoxic cembranoids, denoted as bipinnatins a-d, have been isolated from the gorgonian coral Pseudopterogorgia bipinnata . Their structures were determined through a combination of spectroscopic and x-ray crystallographic methods.
Amy E. Wright, Neal S. Burres, Gayle K. Schulte   +2 more
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Deheiculatins A-L, 20-oxygenated cembranoids from Macaranga deheiculata

Phytochemistry, 2017
Twelve cembranoids, deheiculatins A-L, were isolated from the leaves and twigs of Macaranga deheiculata. Their structures were elucidated on the basis of spectroscopic data. Five of these compounds displayed moderate inhibitory activity against human and/or mouse 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1). 20-Oxygenated cembranes are rare.
Wei-Yan, Qi, Yu, Shen, Yan, Wu, Ying, Leng, Kun, Gao, Jian-Min, Yue   +5 more
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Mode of cembranoid action on embryonic muscle acetylcholine receptor

Journal of Neuroscience Research, 2007
AbstractThe mechanism of eupalmerin acetate (EUAC) actions on the embryonic muscle nicotinic acetylcholine receptor (nAChR) in BC3H‐1 cells was studied by using whole‐cell and single‐channel patch‐clamp current measurements. With whole‐cell currents, EUAC did not act as an agonist on this receptor. Coapplication of 30 μM EUAC with 50 μM, 100 μM, or 500
H, Ulrich, G, Akk, A A, Nery, C A, Trujillo, A D, Rodriguez, V A, Eterović   +5 more
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Cembranoids, Pseudopteranoids, and Cubitanoids of Natural Occurrence

1992
The structures of (+)-cembrene (1), a macrocyclic diterpene hydrocarbon isolated from pine oleoresins (1, 2), and of the two epimeric cembratrienediols 35 and 36, which were obtained from tobacco (3), were reported in 1962. Since these pioneering studies, the structures of some 300 naturally occurring cembranoids have been resolved.
I. Wahlberg, A.-M. Eklund
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