499 Pyrazines, Diketopiperazines 



James D. Butcher, /. Biol. Chem. 232 785 (1958). 



988 Granegillin, C,oHo„OoNo, pale yellow needles, m.p. 99-100°, 



optically inactive, the crystals have a characteristic odor 

 (as does Aspergillic Acid). 



The only important difference in properties between 

 granegillin and aspergillic acid is the lack of optical activ- 

 ity in the former, and the two compounds may be identical. 



A mold resembling Aspergillus flavus 



A. Csillag, Acta Microbiol. (Hungary) 1 321 (1954); Abstr. 

 in Bull. Hijg. 30 159 (1955). 



989 Hydroxyaspergillic Acid, Ci2H2„0;iN2, nearly colorless needles, 



m.p. 148-150°, [a],r' +36° (c 1 in ethanol). 



CH3 



/ 

 CH.— CH 



CH3 I ^"•■' 



CH:, CHo— CH \ OH 

 I O 



OH 



Aspergillus flavus 



James D. Butcher, J. Biol. Chem. 232 785 (1958). 



990 Neohydroxyaspergillic Acid, C10H20O3N2, colorless crystals, m.p. 



164-166°, [alo'' -58° (c l".01 in ethanol). 



Aspergillus sclerotiorum 



A yield of about 300 mg. per liter was obtained. 



Ulrich Weiss, Frieda Strelitz, Helen Flon and Igor N. Ashe- 

 shov, Arch. Biochem. and Biophys. 74 150 (1958). 



991 



CH3 



CHa 



Candida pulcherrima (Lindner) Windisch 



This compound was isolated as a red, iron-complexed 



