Pfizer Handbook of Microbial Metabolites 346 



which are exploited by some of the more successful antibiotics. 

 Certain compounds listed elsewhere might have been classed 

 as polypeptides. Examples are: penicillins, gliotoxin, certain 

 ergot alkaloids, various diketopiperazines, netropsin, amicetin, 

 Vitamin B^. conjugate and other fohc acids. 



712 DL-Fumarylyl Alanine (Fumaromono-D,L-alanide), CYHgOgN, col- 



orless needles, m.p. 229° (dec). 



HOOC— CH=CH— CO— NH— CH— COOH 



I 



CH3 

 Penicillium resticnlosum 



John Howard Birkinshaw, Harold Raistrick and George 

 Smith, Biochem. J. 36 829 (1942). 



713 Nocardamin, CgHi602N2, white needles, m.p. 184°, no optical 



activity. 



O 



^CHa^^ 



Actinomyces buchanan 



A. StoU, J. Renz and A. Brack, Helv. Chim. Acta 34 862 

 (1951). 



R. F.jC. Brown and G. Biichi, unpublished. (Revised struc- 

 ture ) 



714 N-Succinyl-L-glutamic Acid, C9H13O7N (Monohydrate), colorless 

 hygroscopic crystals, m.p. 62-64°, [«]»-" —11° (c 1.07 in 

 water). 



HOOC— CH2—CH2—CH— COOH 



NH— C— CH2— CH2— COOH 



II 

 O 



Bacillus megatherium 



This substance appears during the sporulating phase 



before the appearance of dipicolinic acid. 



