Synthetic studies of polycyclic terpenes. I.
نویسندگان
چکیده
منابع مشابه
Synthetic approaches to the polycyclic alkaloid stemofoline.
Preliminary studies of a synthetic approach to the alkaloid stemofoline 1 are reported. Stereoselective cyclisation of the ketoester 14 gave the 1-butyl-2,8-bis(methoxycarbonyl)-8-azabicyclo[3.2.1]octane 21 in which the 2-methoxycarbonyl group is in the axial position. The analogous ketones 15, 18, and 19 were also cyclised to give the 8-azabicyclo[3.2.1]octanes 22-24 with axial electron-withdr...
متن کاملLabelling studies on the biosynthesis of terpenes in Fusarium fujikuroi.
Synthetic [2-(13)C]mevalonolactone was fed to the gibberellin producer Fusarium fujikuroi and its incorporation into four known terpenoids was investigated by (13)C NMR analysis of crude culture extracts. The experiments gave detailed insights into the mechanisms of terpene biosynthesis by this fungus.
متن کاملSome studies in the biosynthesis of terpenes and related compounds.
Cyclic terpenes as a class of natural products display a bewildering array of structural types. Well over a hundred different carbon frameworks have been detected so far, many new substances are being currently added to an already impressive list of compounds, and even several representatives of the long-sought group of sesterterpenes have at last made their appearance on the chemical scene14. ...
متن کاملTopical Anti-inflammatory Activity of New Hybrid Molecules of Terpenes and Synthetic Drugs.
The aim of the study was to assess changes in the activity of anti-inflammatory terpenes from Chilean medicinal plants after the formation of derivatives incorporating synthetic anti-inflammatory agents. Ten new hybrid molecules were synthesized combining terpenes (ferruginol (1), imbricatolic acid (2) and oleanolic acid (3)) with ibuprofen (4) or naproxen (5). The topical anti-inflammatory act...
متن کاملpostnatal studies of bats (pipistrellus kuhlii and miniopterus schreibersii) & histomorphology and histochemistry studies of organs and diseases of (neurergus microspilotus and n. kaiseri)
1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1980
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.44.499