منابع مشابه
Terpenoids: Higher
Terpenoids (synonymous with isoprenoids or isopentenoids) are a diverse class of natural products that are derived biosynthetically from an intermediate with a simple five-carbon skeleton (isopentane); higher terpenoids are complex structures that possess minimally between 20 and 40 carbon atoms. Higher terpenoids evolved coincidentally with the evolution of life and play multiple functions in ...
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The aerial parts of Achillea setacea afforded, in addition of a rare monoterpene triol and 12 known sesquiterpene lactones, a new guaianolide containing an endoperoxide ring. Its structure was elucidated by spectral methods.
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Among plant secondary metabolites terpenoids are a structurally most diverse.
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A new and efficient strategy is described for carrying out the enantiospecific synthesis of monocarbocyclic terpenoids from (-)-sclareol (1). The key steps are the Grob scission of l l p toluenesulphonyloxydriman-7ct-ol (2) to give the tobacco seco-sesquiterpene 3 and the Baeyer-Villiger oxidation of 4-[(1'S, 2'S)-2'-formyl-2',6',6'-trimethylcyclohexyl]-2-butanone (4), derived from 3. The first...
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The endoplasmic reticulum (ER) of higher plants is a complex network of tubules and cisternae. Some of the tubules and cisternae are relatively persistent, while others are dynamically moving and remodeling through growth and shrinkage, cycles of tubule elongation and retraction, and cisternal expansion and diminution. Previous work showed that transient expression in tobacco leaves of the moto...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1988
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.61.4147