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Inhaltsstoffe des Osmanthus-Absolues 6. Mitteilung. (7S, 10S, 5E)- und (7R, 10S, 5E)-2,6,10-Trimethyl-7,10-epoxy-2,5,11-dodecatrien

✍ Scribed by Roman Kaiser; Dietmar Lamparsky

Publisher: John Wiley and Sons
Year: 1979
Tongue: German
Weight: 419 KB
Volume: 62
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19790620618

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✦ Synopsis

Constituents of Osmanthus Absolute, 6th Communication. (7**S, 10S, 5E)‐ and (7****R, 10S, 5E****)‐2,6,10‐Trimethyl‐7,10‐epoxy‐2,5,11‐dodecatriene**

Two novel sesquiterpenoid oxides 1a and 1b from Osmanthus absolute have been identified. Their structural proof is based on pectral data and synthesis starting from the known methyl [5‐methyl‐5‐vinyl‐tetrahydrofur‐1‐yl] ketones (4a and 4b, respectively), whose configuration is well established. The thus obtained compounds 1a/1b identical with the natural products, were accompanied by their corresponding 6‐methylidene isomers 3a and 3b which could not be detected in the natural substrate.

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