44 THE CHEMICAL CONSTITUTION OF THE PROTEINS 



POLYPEPTIDES SYNTHESISED BY METHOD III. 

 Dipt p tides. 



Benzoylglycyl-glycine (hippuryl chloride + glycine ester). 



d-Alanyl-glycine (d-alanyl chloride + glycine ester). 



d-Alanyl-d-alanine (d-alanyl chloride + d-alanine ester). 



dl-Valyl-glycine. 



Valyl-alanine A. 



1-Leucyl-glycine (1-leucyl chloride + glycine e:rter). 



1-Leucyl-d-alanine (1-leucyl chloride + d-alanine ester). 



l-Leucyl-1-leuctne (1-leucyl chloride + 1-leucine ester). 



1-Prolyl-l-phenylalanine (1-prolyl chloride -f 1-phenylalanine ester). 



1-Prolyl-d-phenylalanine (1-prolyl chloride + d-phenylalanine ester). 



a-Pyrroyl-glycine (a-pyrroyl chloride + glycine ester). 



Pyrrolidonyl-glycine (pyrrolidonyl chloride -|- glycine ester). 



d-Tryptophyl-glycine (d-tryptophyl chloride + glycine ester). 



1-Tryptophyl-d-glutamic acid (1-tryptophyl chloride + d-glutamic acid ester). 



Tripep tides. 



Benzoyl-diglycyl-glycine (benzoyl-glycyl-glycyl chloride + glycine ester). 

 Leucyl-glycyl -glycine (leucyl-glycyl chloride + glycine ester). 

 Leucyl-glycyl-leucine (leucyl-glycyl chloride + leucine ester). 



1-Leucyl-l-tryptophyl-d-glutamic acid (1-leucyl-l-tryptophyl chloride + d-glutamic acid ester). 

 1-Leucyl-glycyl-d-alanine (d-bromisocapronyl-glyclyl chloride + d-alanine ester). 

 1-Leucyl-glycyl-l-leucine (d-bromisocapronyl-glycyl chloride + 1-leucine ester). 

 Glycyl-1-asparagyl-l-leucine (chloracetyl-1-asparagyl chloride + 1-leucine ester). 

 Glycyl-tyrosyl-glycine (chloracetyl-carbomethoxy-tyrosyl chloride + glycine ester). 



Tetrapeptidts. 

 Leucyl-diglycyl-glycine (bromisocapronyl-glycyl-glycyl chloride + glycine ester). 



(bromisocapronyl-glycyl chloride + glycyl-glycine ester). 



(leucyl-diglycyl chloride + glycine ester). 



d-Alanyl-glycyl-1-tyrosine (bromopropionyl-glycyl-glycyl chloride + 1-tyrosine ester). 

 Glycyl-d-alanyl-glycyl-1-tyrosine (chloracetyl-d-alanyl-glycyl chloride + I-tyrosine ester). 

 Glycyl-tyrosyl-glycyl-alanine (chloracetyl-carbomethoxy-tyrosyl chloride + glycyl -d-alanine 



ester). 



Glycyl-glutamyl-diglycine (chloracetyl-glutamyl dichloride + glycine ester). 

 Glycyl-asparagyl-diglycine (chloracetyl-asparagyl dichloride + glycine ester). 



Ptntapeptides. 



Leucyl-triglycyl-glycine (a-bromisocapronyl-diglycyl-glycyl chloride -f- glycine ester). 

 1-Lcucyl-triglycyl-l-leucine (a-bromisocapronyl-diglycyl-glycyl chloride + 1-leucine). 



Hexapeptiilr. 

 Leucyl-tetraglycyl-glycine (a-bromisocapronyl-diglycyl-glycyl chloride -I- glycyl-glycine). 



Heptaptptidt. 

 Leucyl-pentaglycyl-glycine (a-bromisocapronyl-diglycyl-glycyl chloride + diglycyl-glycine). 



Octapeptide. 

 Leucyl-hexaglycyl-glycine (a-bromisocapronyl-diglycyl-glycyl chloride + triglycyl-glycine). 



