Pfizer Handbook of Microbial Metabolites 354 



glucosamine, and a substance resistant to further hydroly- 

 sis which was assigned structure II. 



Streptomyces roseochromogenes 



Seigo Hosoya, Momoe Soeda, Nobuhiko Komatsu and 

 Susumu Imamura, J. Antibiotics (Japan) 4 79 (1951). 



Y. Saburi, ibid. 6B 402 (1953). 



Tashio Goto, Yosimasa Hirata, Seigo Hosoya and Nabukiko 

 Komatsu, Bull. Chem. Soc. Japan 30 304, 729 (1957). (Struc- 

 ture) 



733 Pleocidin, a hygroscopic white powder. 



A polypeptide resembling streptothricin. 

 S. lavendulae or related sp. 



Jesse Charney, Wm. S. Roberts and W. P. Fisher, Antibiotics 

 and Chemotherapy 2 307 (1952). 



734, 735 Mycothricins (A and B). 



Basic polypeptides related to streptothricin. Acid hy- 

 drolysis yielded ^-lysine, (present in streptothricin, pleo- 

 cidin, geomycin and viomycin), roseonine (geamine) 

 present in streptothricin, geomycin and pleocidin, and 

 serine (present in viomycin). 



Streptomyces lavendulae type 



G. Rangaswami, C. P. SchafFner and S. A. Waksman, Anti- 

 biotics and Chemotherapy 6 675 (1956). 



736 Grasseriomycin, pale yellow hydrochloride, m.p. (Reineckate) 



187-190° (dec). Molecular weight 610. 



A polypeptide resembling streptothricin. Negative 

 biuret, Millon, FeClg. Positive ninhydrin, Molisch, 

 Fehling. 



Streptomyces lavendulae, S. griseolavendus 



Kasububo Ueda, Youichiro Okimoto, Heiichi Sakai and Kei 

 Arima, /. Antibiotics (Japan) 8A 91 (1955). 



Yusuke Sumiki, Kinichiro Sakaguchi and Takenori Asai, 

 Japanese Patent 6296 (1957). 



737 Actinorubin (C6H14O3N0 or C9H22O4N5) (Hehanthate), reddish 



orange clusters, m.p. 206-214° (dec). 



A basic polypeptide related to streptothricin. Positive 

 biuret, reduces KMnOi, Fehlings solution. Negative 

 Molisch, Sakaguchi. 



Streptomyces spp. resembling S. erythreus, S. fradii, S. 

 albosporeus 



Renate Junowicz-Kocholaty and Walter Kocholaty, /. Biol. 

 Chem. 168 757 (1947). 



