241 Benzoquinones 



494 2,5-Diniethoxybenzoquinone, C8H8O4, yellow prisms, in.p. 250° 

 (dec). 



CH3O 



Polyporus fumosus (Pers.) Fries grown on an artificial 

 medium including glucose and corn-steep liquor. 



Yield: 0.1 g. from 2 liters of culture broth. 



J. D. Bu'Lock, J. Chem. Soc, 575 (1955). (Isolation) 



E. Knoevenagel and C. Biickel, Ber. 34 3993 (1901). (Syn- 

 thesis) 



495 Fumigatin, C8H8O4, maroon needles, m.p. 116' 



CH3 ? OH 







n OCH3 



496 Fumigatin Hydroquinone is produced as well, the ratio of the 

 two compounds varying with the age of the culture. 



OH °<=* 



Aspergillus fumigatus Fres. grown on a Raulin-Thom 

 medium. 



Winston Kennay Anslow and Harold Raistrick, Biochem. J. 

 32 687 (1938). (Isolation) 



W. K. Anslow, J. N. Ashley and H. Raistrick, /. Chem. Soc, 

 439 (1938). (Synthesis) 



