507 Phenazines and Phenoxazones 



'003 Pigment B, C,r,H,-,0,iN:iS (may also be hydrated), red crystals, 

 dec. without melting. 



An acidic pigment similar to A in structure, but with 

 an additional methyl group and a sulfo group. Yield 

 30-40 mg. per liter. 



Both produced by a red strain of Pseudomonas aerugi- 

 nosa. 



F. G. Holliman, Chem. and Ind., 1668 (1957). 



1004 Griseoiutein A, Ci7Hi40,5No, reddish yellow needles, m.p. 193° 



(dec). 



Streptomyces griseoluteus 



Shoshiro Nakamura, Chem. and Pharm. Bull. (Japan) 6 

 547 (1958). 



1005 Griseoiutein B, Ci^HieOgNo, pale yellow crystals, darkening from 

 150°, dec. above 220°. Griseoiutein B is a phenazine with 

 the following proposed structure : 



COOH OCH3 



ocxp 



CH.— O— CH— CH2 

 OH OH 



Streptomyces griseoluteus n. sp. 



Hamao Umezawa, Selki Hayano, Kenji Maeda, Yasuo Ogata 

 and Yoshiro Okami, J. Antibiotics (Japan) 4 34 (1951). 



Teisuke Osato, Kenji Maeda and Hamao Umezawa, ibid. 

 7A 15 (1954). 



Shoshiro Nakamura, Kenji Maeda, Teisuke Osato and Ha- 

 mao Umezawa, ibid. lOA 265 (1957). 



Shoshiro Nakamura, Chem. and Pharm.. Bull. (Japan) 6 

 547 (1958). 



