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Biosynthesis of fomannosin from 1,2-13C-acetate

✍ Scribed by David E. Cane; Robert B. Nachbar

Publisher: Elsevier Science
Year: 1976
Tongue: French
Weight: 211 KB
Volume: 17
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)93128-9

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✦ Synopsis

Fomannosin (A) has been implicated in the phytopathogenic activity of the economically important wood rot fungus Fomes annosus which affects pine stands in the Southeastern United States. The structure of this unusual sesquiterpene was established by spectroscopic methods and by X-ray crystallographic analysis of the E-bromobenzoylurethane derivative of dihydrofomannosin.l Recently a synthetic approach to fomannosin has been described. 2 Biogenetic speculations3 have centered on a humulene precursor which might cyclize to a tricyclic compound related to illudol followed by oxidative cleavage of the appropriate bond (Scheme 1). Although biosynthetic studies have been reported for the biogene-CH3C02Na -b

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