Pfizer Handbook of Microbial Metabolites 



170 



Heinrich Wieland, Fridolf Rath and Horst Hesse, Ann. 548 

 34 (1951). 



344 Cerevisterol (A' ---Ergostadiene-3;3,5a,6/3-triol), Co,sH4,.03, color- 

 less crystals, m.p. 256-259°, [a]n -83° (c 0.89 in pyri- 

 dine). 



H OH 



Yeasts, Claviceps purpurea (ergot), Amanita phalloides 



About 10 g. were obtained from 4500 kg. of dried yeast. 

 Some 20 g. were obtained from 17 kg. of dry Amanita 

 phalloides. 



Heinrich Wieland and Gustav Coutelle, Ann. 548 275 

 (1941). (Isolation) 



G. H. Alt and D. H. R. Barton, /. Chem. Soc, 1356 (1954). 

 (Structure) 



345 Fungisterol (A'-Ergosten-3^-ol), C^sH4sO, colorless crystals, m.p. 

 149°, [a]i,23 -0.2° (in chloroform). 



HO 



Fungisterol accompanies ergosterol in ergot, occurs in 

 Amanita phalloides, Penicillium. chrysogenum, Rhizopus 

 saponicus, Calocera viscosa, Polyporus confiuens Ft., P. 

 sulfureus (Bull.) Fr., Hydnum imbricatum L., Geaster 

 fimbriatus Fr. 



Heinrich Wieland and Gustav Coutelle, Anii. 548 270 

 (1941). (Structure) 



Akira Saito, J. Fermentation Technol. (Japan) 29 310 

 (1951). 



