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Hexacyclic carbon skeleton

The stem-bark extract of Tabernaemonlana corymbosa also yielded a minor alkaloid, tronoharine (346), which is characterized by an unprecedented hexacyclic carbon skeleton [231]. Tronoharine (346) can be considered as having arisen from an aspidospermatan-type... [Pg.422]

Alkylation of disodium tetracarbonylferrate with alkyl halides and tosylates in the presence of ethylene provides ethyl ketones in a one pot procedure. Usage of alkenes for the second alkylation of Collman s reagent may provoke rearrangement reactions of the intermediate alkyliron species. This has been observed in a hexacyclic system where a ketone with a rearranged carbon skeleton was obtained in the course of this transformation. An analog of Collman s reagent is the [Fe(CO)3(NO)] anion, which can be applied in similar reactions. However, to date it has received less attention. ... [Pg.566]

See other pages where Hexacyclic carbon skeleton is mentioned: [Pg.81]    [Pg.432]    [Pg.42]    [Pg.375]    [Pg.376]    [Pg.81]    [Pg.92]    [Pg.390]    [Pg.668]    [Pg.252]    [Pg.1189]    [Pg.74]    [Pg.420]    [Pg.421]    [Pg.237]    [Pg.504]   
See also in sourсe #XX -- [ Pg.344 , Pg.422 ]



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Carbonate skeletons

Hexacycles

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