Pfizer Handbook of Microbial Metabolites 



546 



1043 Nucleocidin, CnH^eOgNfjS, colorless crystals, no definite m.p., 

 [a],r*'' -33.3° (c 1.05 in 1 : 1 ethanol, 0.1 N hydrochloric 

 acid). 

 Partial structure: 





NHo 



I 

 CeHioOs 



I 

 OSOoNH, 



CeHioOs is an unusual 

 reducing sugar. 



Streptomyces calvus 



S. O. Thomas, V. L. Singleton, J. A. Lowery, R. W. Sharpe, 

 L. M. Pruess, J. N. Porter, J. H. Mowat and N. Bohonos, "An- 

 tibiotics Annual 1956-1957," Medical Encyclopedia Inc., New 

 York, p. 716. (Isolation) 



C. W. Waller, J. B. Patrick, W. Fulmor and W. E. Meyer, 

 J. Am. Chem. Soc. 79 1011 (1957). (Structure) 



1044 Adenylosuccinic Acid, Ci4HisOiiN.r5P, no properties listed. 



HOOC— CH— CH.— COOH 



NH 



H2O3POCH. 



OH OH 



Penicillium. chrysogenum (mycelium) 



About 16 known derivatives of adenine, guanine, cyti- 

 dine, uracil, etc., also were detected in this study. 



Alessandro Ballio and Giovanni Serlupi-Crescenzi, Nature 

 179 154 (1957). 



