387 Polypeptides and Related Compounds 



806 Actinomycin X,,,, C-.gHssOieNj.. 



— Thre— Val- 



Pro — Sar — Meval — O 



— Thre — Vol — Sar — Sar — Meval — O 



Streptomyces chrysomallus, S. fradiae 



Hans Brockmann and Gottfried Pampus, Angew. Chem. 67 



519 (1955). 



H. H. Martin and Gottfried Pampus, Arch. Mikrobiol. 25 



90 (1956). 



807 Actinomycin X„„ Cfi4H9oOi7Ni2. 



— Thre — Vol — p — Hypro — Sar — Meval — O 

 Thre Vol Pro— —Sar— Meval — O 



Streptomyces chrysomallus, S. fradiae 

 Same references as Actinomycin X„.^. 



Actinomycins Z. 



All contain the same five amino acids on hydrolysis: 

 threonine, sarcosine, N-methylalanine, vaUne and N- 

 methylvaline. 



808 Actinomycin Z,„ amorphous orange-red powder, m.p. 250° (dec. ). 



Streptomyces fradiae 



R. Bossi, R. Hiitter, W. Keller-Schierlein, L. Neipp and 

 H. Zahner, Helv. Chim. Acta 41 1645 (1958). 



809 Actinomycin Z^, orange-red crystals, m.p. 256-260 (dec), [(x]v 



-362° (c 0.185 in CHCI3). 



Streptomyces fradiae 



R. Bossi, R. Hiitter, W. Keller-Schierlein, L. Neipp and 

 H. Zahner, Helv. Chim.. Acta 41 1645 (1958). 



Actinomycins 'L<^,'L._<^,'L\, an inseparable mixture, m.p. 256-260° 

 (dec), [a"]„ -246 (c 0.257 in CHCl,)- 



R. Bossi, R. Hiitter, W. Keller-Schierlein, L. Neipp and 

 H. Zahner, Helv. Chim. Acta 41 1645 (1958). 



