Pfizer Handbook of Microbial Metabolites i66 



Ida Smedley-MacLean, Biochem. J. 22 22 (1928). (Isola- 

 tion) 



332 Hyposterol, tentatively C27H40O or C27H44O, colorless unstable 

 crystals, m.p. 100-102°, [y.]u-° +12.5° (in chloroform). 

 Structure unknown. May be a C^s sterol. 

 Yeasts 

 Heinrich Wieland and G. A. C. Gaugh, Ann. 482 36 (1930). 



133 Anasterol, C27H44O, colorless crystals, m.p. 157-159°, [a]D^^ 

 —8.1° (in chloroform). 



Structure unknown. May be a C2S sterol. 



Yeasts 



Heinrich Wieland and G. A. C. Gaugh, Ann. 482 36 (1930). 



334 14-Dehydroergosterol, C08H42O, colorless needles, m.p. 198- 

 201°, [a]D -396° (in carbon tetrachloride). 



^ 



/ 

 HO 



Aspergillus niger 



Ergosterol was isolated from the same culture. 



D. H. R. Barton and T. Bruun, J. Chem. Soc, 2728 (1951). 



335 24(28)-Dehydroergosterol (5,7,22,24(28)-Ergostatetraen-3-^-ol), 

 C2SH42O, colorless crystals (Monohydrate), m.p. 118-120°, 

 [aln'' -78° (1% in chloroform). 

 Probable -structure : 



HO 



Yeasts 



Under appropriate growth conditions, yields of this 

 sterol equal those of ergosterol. 



