257 Anthraquinones 



Cortinariits sanguineus (Wulf. ) Fries, Chaetomium 

 affine Corda. 



A yield of about S'c of the dry mycelial weight has been 

 mentioned. 



Fritz Kogl and J. J. Postowcky, Ann. 444 1 (1925). 



R. A. Jacobson and Roger Adams, J. Am. Chem. Soc. 46 

 1312 (1934). (Synthesis) 



543 Versicolorin, Ci^HjoOe, yellow-orange needles, m.p. 282°. 



HO O OH ^^^^ HO O OH ^^ ^^ 



I II I CH2OH I II I CH2OH 



II OH HO II 



O O 



Aspergillus versicolor (Vuillemin) Tiraboschi 



The same organism produces an uncharacterized xan- 



thone pigment. 



Yuishi Hatsuda and Shlmpei Kuyama, J. Agr. Chem. Soc. 



Japan 29 11 (1955). 



544 Cynodontin, Cj^HioOe, bronze plates, m.p. 260°. 



HO O OH 



HO O OH 



Helminthosporium cynodontis Marignoni, H. euclaenae 

 Zimmermann, H. avenae Ito and Kurib, H. victoriae 



Winston Kennay Anslow and Harold Raistrick, Biochem. J. 

 34 1546 (1940). (Synthesis) 



545 oj-Hydroxyemodin ( Citreorosein ) , CjgHioOe, orange needles, 

 m.p. 288°. 



n 



CH2OH 



Penicillium cyclopium Westling, P. citreo-roseum 

 Dierckx. 



Winston K. Anslow, John Breen and Harold Raistrick, 

 Biochem. J. 34 159 (1940). 



