Pfizer Handbook of Microbial Metabolites 



1 68 



A. Angeletti, G. Tappi and G. Biglino, Ann. Chim. (Rome) 

 42 502 (1952). 



J. CasteUs, E. R. H. Jones, G. D. Meakins and R. W. J. Wil- 

 liams, J. Chem. Soc, 1159 (1959). (Structure) 



338 Ergosta-7,22-dien-3-one, C08H44O, m.p. 184-187°, [a]u +6° (in 

 chloroform ) . 



/^ 



/ 



Fomes fomentarius 



H. R. Arthur, T. G. Halsall and R. D. Smith, /. Chem. Soc, 

 2603 (1958). 



339 Ergosterol Peroxide, C28H44O3, colorless crystals, m.p. 178°, [ajn 

 -36°. 



Aspergillus fumigatus (mycelium) 



P. Wieland and V. Prelog, Helv. Chim. Acta 30 1028 (1947). 



340 Episterol (A''^**"^''-Ergostadien-3/3-ol), CosH4qO, colorless crystals, 

 m.p. 150°, [(x]d —5° (in chloroform). 



HO 



Yeasts 



