453 Pyiroles, Porphyrins and Related Compounds 



Serratia marcescens (Bacillus prodigiosum), S. marino- 

 rubriivi 



Fritz Wrede and Alexander Rothhaas, Z. physiol. Chem. 226 

 95 (1934). 



Other metabohtes which have been isolated from cul- 

 tures of Serratia marcescens are: 



920 A "prodigiosin precursor," C10H10O0N2, colorless nee- 

 dles, m.p. > 250° (dec). 



921 A colorless, crystalline compound, not an antibiotic, 

 CS4HG0O10N3, m.p. 153°. 



922 An amide, C04H33O2N7. 

 Palmitic acid. 



Three other red, one orange and one blue pigments. 



A polypeptide, marcescin. 



A polysaccharide. 



Fritz Wrede and Alexander Rothhaas, Z. physiol. Chem. 226 

 95 (1934). 



Ursula V. Santer and Henry J. Vogel, Biochim. et Biophys. 

 Acta 19 578 (1956). 



O. M. Efimenko, G. A. Kuznetsova and P. A. Yakimov, 

 Biokhimiya 21 416 (1956). 



A. J. Castro, J. F. Deck, M. T. Hugo, L. R. wmiams and 

 M. R. Zingg, /. Org. Chem. 23 1232 (1958). 



A. J. Castro, A. H. Corwin, F. J. Waxham and A. L. Beilby, 

 ibid. 24 455 (1959). 



Doris P. Courington and T. W. Goodwin, J. Bacteriol. 70 

 568 (1955). 



Harry H. Wasserman, James E. McKeon, Lewis Smith and 

 Peter Forgione, /. Am. Chem. Soc. 82 506 (1960). (Structure 

 shown above) 



A. Treibs and R. Galler, Angew. Chem. 70 57 (1958). 



923 Celesticetin, C24H3g09N2S, hygroscopic glass, m.p. (Oxalate): 



147-152°, [aU-' +126.6° (c 0.5 in chloroform), [aW* 

 (Oxalate) 106.6° (c 0.5 in water). 

 Proposed Structure: 



O 



CH2— CH2— O— C— '^^^ 



S / 



HO I HO 



O 



0\ CH-NH-C-L^ 



I CH, '.. I 



"o in ^"^ CH 



CH3 



OCHj 



