339 



Polypeptides and Related Compounds 



CHa 



\ 



CH 



CHs 



NH 



D-a-Hydroxy- CH 

 isovaleric Acid 



CH 



0=C 



CHa 



CH3 



CH3 



CH3 



c=o 



CH' 



D-a-Hydroxy- 

 -CH isovaleric 

 \ Acid 



NH 



D-Vaiine CH /"' 



CH 



./ 



^L-Va!ine 

 CH^ 



/ 



CH 



/ \ 

 CHa CH3 



NH 



L-Lactic X O 



Acid^.^0 

 -- C -CH'"^ 



" CH 



Vaiinomycin 



\ 



CHs 



CH2 



/ 



NH. 



I 



CH, CH3 CH3 



I \ / 



CHa CHa CHo CH 



\ / 1 I 



CH CH2 CHo CH2 



I I I I 



CO— NHCHCO NHCHCO NHCHCO NHCHCO— N CH2 



I (l) (l) (l) (d) 



CHo— CH 



(l) (l) CH— CHo 



(d) (l) (l) (l) I 

 CH2— N COCHNH COCHNH COCHNH COCHNH — CO 



CH2 



CH, 



