Scheme 1. Synthetic Scheme toward Arginine-Linked ADPr-Peptides.

(A) Solution-phase chemistry toward building blocks 1α and 1β and (B) solid-phase chemistry toward ADPr-peptides 14–17.

(A) Solution-phase chemistry toward building blocks 1α and 1β and (B) solid-phase chemistry toward ADPr-peptides 14–17.