a series of novel catecholamine derivatives has been prepared in which one of the n-methyl substituents of isoproterenol has been extended by a spacer consisting of a chain of four methylenes which terminates with an amide linkage to a peptide , the point of attachment being via the aromatic amino group of p-aminophenylalanine .
C0007412
catecholamine
C0022245
isoproterenol