282 



NITROGEN NUTRITION AND METABOLISM 



Table 2 (continued) 



Group* Compound 



VI Aspergillic acid 



N 



/ \ 

 HC C— CH 2 — CH 



VIII 



IX 



Organisms 

 Aspergillus flavus (141, 

 390, 591) 

 CH 3 



CH 3 



Cordyceps mill tar is (50, 

 118) 



f N^ ^N"' CH 2 OH 



I I 



CH— CHOH— CH— CH 2 



I o 1 



Cycloheximide 



CHi — CH — CH3 



/ \ 



CHj— CH C=0 



\ / 



CH 2 — CH 



Streptomyces spp. (112, 

 304, 313, 590) 



CH 2 — C 



• 



O 



CHOH— CH«— CH N— H 



\ / 



CH 2 — C 



\ 



Actithiazic acid 

 H 



O 



Streptomyces spp. (352) 



0=C N 



CH 2 — S 



CH— (CH 2 ) 5 — COOH 



