Results 101 to 110 of about 186 (129)

Synthesis of fluorinated drimanes. Preparation of 9αF-drimenin

Tetrahedron Letters, 2003
Abstract A stereoselective approach to the 9α-fluorinated analogue of the natural drimane sesquiterpene drimenin starting from β-ionone is described. β-Ionone is transformed into a bicyclic β-cetoester from which 9αF-drimenin is prepared through stereoselective electrophilic fluorination at the C-9 with N -fluorobenzenesulfonimide followed by Wittig
Antonio Abad, Consuelo Agulló, Ana C. Cuñat, David Pardo   +3 more
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The reactivity of drimane unsaturated dialdehydes towards nucleophiles

Tetrahedron, 1997
Abstract The reactivity of the potent antifeedants and antibiotics (−)-polygodial ( 1 ) and (−)-warburganal ( 3 ) [prepared from (−)- 1 ] towards amino acids and triacetic acid lactone ( 5 ) was compared to that of their C-9 epimers 2 and 4 [both prepared from (−)- 1 ]. Polygodial ( 1 ) reacts approximately 10 times faster than warburganal ( 3 ),
Mikael Jonassohn, Ralf Davidsson, Pia Kahnberg, Olov Sterner   +3 more
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Synthetic Investigations in the Field of Drimane Sesquiterpenoids

2006
ABSTRACT: In this article, the results of the author’s investigations in the field of the synthesis of drimane sesquiterpenoids, a group of terpenic compounds which possess a wide variety of biological activities (antifeedant, antibacterial, antifungal, anticomplemental, cytotoxic, antiallergic, piscicidal, molluscicidal, plant growth regulatory ...
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Identification of the bicyclic sesquiterpenes drimane and eudesmane in petroleum

Journal of the Chemical Society, Chemical Communications, 1983
Drimane and eudesmane have been identified in petroleum; eudesmane is formed from higher plant precursors while drimane is probably derived from microbial sources.
Robert Alexander, Robert Kagi, Rohinton Noble   +2 more
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A Meroterpenoid NF-κB Inhibitor and Drimane Sesquiterpenoids from Asafetida

Journal of Natural Products, 2006
Investigation of an acetone extract from Asafetida afforded two drimane sesquiterpene dienones (fetidones A and B, 1a,b) and several known sesquiterpene coumarin ethers, one of which (8-acetoxy-5-hydroxyumbelliprenin, 2a) showed potent and specific NF-kappaB-inhibiting properties.
APPENDINO, Giovanni Battista, MAXIA L, BASCOPE M, HOUGHTON PJ, SANCHEZ DUFFHUES G, MUNOZ E, STERNER O.   +6 more
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Antimicrobial drimane – phthalide derivatives from Hypoxylon fendleri BCC32408

Fitoterapia, 2019
Fourteen new compounds including thirteen drimane - phthalide derivatives (fendlerals A - C, fendlerins A - D, fendlerols A - B, fendleric acids A - C, fendlerinine G) and one terphenyl derivative (fendleryl E) along with eight known compounds, fendlerinine A, rickenyls C - D, fendleryls C - D, atromentin, tetramethyl atromentin, and ...
Chakapong, Intaraudom, Wikorn, Punyain, Nantiya, Bunbamrung, Aibrohim, Dramae, Tanapong, Boonruangprapa, Pattama, Pittayakhajonwut   +5 more
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Flavonol and drimane-type sesquiterpene glycosides of Warburgia stuhlmannii leaves

Phytochemistry, 2003
An investigation of methanolic extract of Warburgia stuhlmannii leaves has led to the isolation of two new drimane-type sesquiterpene glycosides characterized as mukaadial 6-O-beta-D-glucopyranoside, mukaadial 6-O-alpha-L-rhamnopyranoside together with two other novel flavonol glycosides identified as 3',5'-O-dimethylmyricetin 3-O-beta-D-2",3 ...
Lawrence O Arot, Manguro, Ivar, Ugi, Rudolf, Hermann, Peter, Lemmen   +3 more
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Siccanin-related drimane meroterpenoids: biological activities and synthesis

Natural Product Reports
This review describes the isolation, structural characteristics, bioactivities and divergent synthetic strategies of siccanin-related drimane meroterpenoids.
Shengxin Sun, Xia Wang, Nvdan Hu, Shiqi Fu, Shengkun Li   +4 more
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A drimane sesquiterpenoid lactone from Warburgia salutaris

Phytochemistry, 1999
The stem bark of Warburgia salutaris collected in Zoutpansberg mountains yielded a new drimane sesquiterpenoid lactone, salutarisolide, along with four known drimane sesquiterpenoids warburganal, mukaadial, polygodial and isopolygodial. The structure of salutarisolide was fully characterized from its spectral data.
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The synthesis of drimane sesquiterpenoids

Natural Product Reports, 1991
Jansen, B.J.M., de Groot, A.
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