265 Anthraquinones 



K. G. Neill and H. Raistrick, Chem. and Ind., 551 



(1956). (Isolation) 



Idem., Biochem. J. 65 166 (1957). (Isolation) 

 D. H. R. Barton, P. de Mayo, G. A. Morrison and H. Rai- 

 strick, Tetrahedron 6 48 (1959). (Structure) 



571 Norherqiieinone, C19H1SO7, dark red needles, m.p. 279° (dec), 



[a],r' +1080° ±60° (c 0.048 in pyridine). 

 Structure: Unmethylated herqueinone 

 See herqueinone for organism, structure and references. 



572 Herquein, CigHooOg (proposed), yellow-brown crystals, m.p. 



129° (decO. 

 Water-soluble. Fluoresces in alkali. 

 Penicillium herqiiei 

 H. Stowar Burton, Brit. J. Exptl. Path. 30 151 (1949). 



573 Herqueinone, CooHoqOj, red needles, m.p. 226° (dec.) (sub- 



limes), [aW- +440° ±40° (c 0.063 in ethanol). 

 Partial structure: 



Penicillium herquei Bainier and Sartory 



A crude pigment yield of 17% of the weight of the dry 

 mycelium was obtained. The major constituents were 

 norherqueinone and its methyl ether, herqueinone. Mi- 

 nor constituents were physcion and meso-erythritol. 



The plant pigment, haemocorin, also contains the peri- 

 naphthenone nucleus. 



Frank H. Stodola, Kenneth B. Raper and Dorothy 1. Fen- 

 neU, Nature 167 773 (1951). (Isolation) 



J. A. Galarraga, K. G. NeUl and H. Raistrick, Biochem. J. 61 

 456 (1955). 



D. H. R. Barton, P. de Mayo, G. A. Morrison, W. H. Schaeppi 

 and H. Raistrick, Chem. and Ind., 552 (1956). (Structure) 



Robert E. Harman, James Cason, Frank H. Stodola and 

 A. Lester Adkins, /. Org. Chem. 20 1260 (1955). 



574 Solorinic Acid, C01H20O7, red-brown plates, m.p. 203.5°. 

 CH3O 11 OH 



\ 



CO(CH2)4CH3 



OH 



