Figure 9

Structural formulae of six compounds. (A) cyclic(Pro-Tyr); (B) cyclic(Val-Pro); (C) cyclic(Leu-Pro); (D) uracil; (E) phenylalanine; (F) tryptophan.
Structural formulae of six compounds. (A) cyclic(Pro-Tyr); (B) cyclic(Val-Pro); (C) cyclic(Leu-Pro); (D) uracil; (E) phenylalanine; (F) tryptophan.