Pfizer Handbook of Microbial Metabolites 



386 



802 Actinomycin Xi„ C59H87O17N] 



-Thre— Val- 



Oxopro — Sar — Meval — O 



Thre- Vol Sar — Sar — Meval — O 



Streptomyces chrysomallus, S. fradiae 



Hans Brockmann and H. Grone, Chem Ber. 87 1036 



(1954). 



803 Actinomycin X2 (V, Bo) CeiHggOiTNio red plates, m.p. 244-246°, 

 [aW> -341° ±10°. 



-Thre — Val — Oxopro — Sar — Meval — O 



—Thre — Vol — Pro —Sar— Meval— O 



Streptomyces chrysomallus, S. fradiae 

 Hans Brockmann and Hans Grone, Chem. Ber. 87 1036 

 (1954). 



804 Actinomycin X3, needles. 



An actinomycin X3, containing threonine, sarcosine, 

 proline, valine, isoleucine and N-methyl valine, also has 

 been isolated. 



H. Brockmann and H. Grone, Chem. Ber. 87 1036 (1954). 



Werner Frommer, Arch. Mikrobiol. 34 1 (1959). 



805 Actinomycin -X^^ (I) C61H90O17N10 yellow needles, m.p. 245— 



247, [aW -260° ±10° (c 0.22 acetone). 



-Thre— Val- 



Hypro — Sar — Meval — O 



Thre Val Pro — Sar— Meval— O 



Streptomyces chrysomallus, S. fradiae 

 Hans Brockmann, Gottfried Pampus and Jost H. Manegold, 

 Chem. Ber. 92 1294 (1959). 



Hans Brockmann and H. Grone, Chem Ber. 87 1036 



(1954). 



