597 Unclassified Metabolites 



:• Positive FeCl;,, Fehling, biuret, Ehrlich, decolorization 



of permanganate. Negative Benedict, Tollens, ninhydrin, 

 Milton, Raymond. Mol. Wt. ~1120. 



The mitomycins may be related to the actinomycins. 



Streptomyces caespitosus 



S. Wakaki, H. Marumo, K. Tomioka, G. Shimizu, E. Kato, 

 H. Kamada, S. Kudo and Y. Fugimoto, Antibiotics and Chemo- 

 therapy 8 228 (1958). 



Toju Hata, Yoshimoto Sano, Ryozo Sugawara, Akihiro 

 Matsumae, Kokichi Kamamori, Tatsuo Shima and Tadashi 

 Hoshi, ;. Antibiotics (Japan) 9A 141 (1956). 



1215 INIoldin, gives positive Molisch and FeCls but negative biuret, 



ninhydrin, Tollens, Fehling and Sakaguchi tests. 

 Streptomyces sp. res. S. phalochroviogenus 

 Kenji Maeda, Yoshiro Okami, Osamu Taya and Hamao 



Umezawa, J. Antibiotics (Japan) 5 465 (1952). 



1216 Monilin, Ci^HooOgNfi, colorless needles, m.p. 235-238° (dec). 



An antifungal compound. Positive ninhydrin. 



Streptomyces sakaiensis 



Shigehiro Fujii, Hiromu Hitomi, Masahiko Imanishi and 

 Koichi Kakazawa, Ann. Rept. Tdkeda Research Lab. 14 8 

 (1955). 



1217 Musarin (C35H6oOi4N2)n (proposed), Mol. Wt. ^5000, yellow 



powder, m.p. 170° (dec), UW" +35.1° ±1.6° (c 1.21 in 

 methanol). 



An acidic substance. 



Streptomyces sp. 



H. R. V. Arnstein, A. H. Cook and Margaret S. Lacey, J. Gen. 

 Microbiol. 2 111 (1948). 



1218 Mutomycin, C7H11.12O2, white crystalline powder, m.p. 141.5- 



142°. 



Actinomyces atroolivaceus var. mutom.ycini 



G. F. Gauze, T. S. Maksimova, O. L. Popova, M. G. Brazh- 



nikova, T. A. Uspenskaya and O. K. Rossolimo, Antibiotiki 



U.S.S.R. 4 20 (273 in EngUsh) (1959). 



1219 Mycelin, m.p. 263° (dec). 



Water insoluble, contains no nitrogen or sulfur. Neg- 

 ative Molisch. Flavomycin is produced by the same or- 

 ganism. Mycelin has antifungal properties. 



Streptom.yces roseofiavus 



Kazuyoshi Also, Tadashi Aral, Kazuhiro Washlda and Tei 

 Tanaami, J. Antibiotics (Japan) 5 217 (1952). 



