165 Terpenoids and Steroids 



Adelaide Harris, Alexander Robertson and W. B. Whalley, 

 ibid., 1799 (1958). (Structure) 



329 9-Deoxorosenonolactone, CooH;io02, colorless crystals, m.p. 115°, 

 [a]D +57° (in chloroform). 



Trichothecium roseum (Link) 



W. B. Whalley, B. Green, D. Arigoni, J. J. Britt and Carl 

 Djerassi, /. Am. Chem. Soc. 81 5520 (1959). 



330 Rosololactone, C00H30O3, white crystals, m.p. 186°, [ajn^^ +6.3° 

 (c 2.3 in chloroform). 



COOH 



Trichothecium roseum (Link) 



Rosololactone is a minor product of this fermentation. 

 It occurs in the mycelium together with rosenonolactone 

 and mannitol. 



Alexander Robertson, W. R. Smithies and Eric Tittensor, J. 

 Chem. Soc, 879 (1949). (Isolation) 



Adelaide Harris, Alexander Robertson and W. B. Whalley, 

 ibid., 1807 (1958). (Structure) 



331 Zymosterol, C27H44O, colorless crystals, m.p. 110°, [ajo +49°. 



HO 



Zymosterol is second to ergosterol in abundance in 

 yeast fat. 



