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Biosynthesis of blazeispirol A, an unprecedented skeleton from the cultured mycelia of the fungus Agaricus blazei

โœ Scribed by Masao Hirotani; Asami Kaneko; Yoshihisa Asada; Takafumi Yoshikawa

Book ID
104210643
Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
169 KB
Volume
41
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

The biosynthesis of blazeispirol A, an unprecedented skeleton, was investigated by feeding 13 C-labeled acetates, propionate and methionine, to the growing cultures of Agaricus blazei (Agaricaceae). 13 C NMR spectral analysis demonstrated the mevalonate origin of the spiroacetal moiety and the dihydronaphthalene moiety. The O-methyl and 28-methyl groups of blazeispirol A were labeled by feeding l-[methyl-13 C] methionine. The biosynthetic origin of blazeispirol A derived from ergosterol is discussed.

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Blazeispirol A, an unprecedented skeleto
Blazeispirol A, an unprecedented skeleton from the cultured mycelia of the fungus Agaricus blazei
โœ Masao Hirotani; Seiko Hirotani; Hiroaki Takayanagi; Takafumi Yoshikawa ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 193 KB

Blazeispirol A, an unprecedented skeleton has been isolated from the cultured mycelia of Agaricus blazei(Agaricaceae). Its structure was elucidated to be the previously unknown spiro [4,10b-ethanonaphtho[l,2b]pyran-2,2'-furan] skeleton which was established by extensive 1D and 2D NMR spectral data a