Fmoc-L-α-allylproline

N-Boc-L-trans-4-ethoxyproline

Fmoc-D-Bip(4-Cl)-OH

Boc-(R)-γ-(4-methoxy-benzyl)-L-proline

Boc-(R)-γ-(4-fluoro-benzyl)-L-proline

Boc-(R)-gamma-(3-trifluoromethylbenzyl)-L-proline

Boc-(R)-γ-(1-naphthalenylmethyl)-L-proline

Boc-(R)-γ-(2-chloro-benzyl)-L-proline

Boc-(R)-γ-(4-methyl-benzyl)-L-proline

Boc-(R)-γ-(3-iodo-benzyl)-L-proline

Boc-(R)-gamma-(3-fluoro-benzyl)-L-proline

Boc-(R)-α-(3-bromo-benzyl)-proline

Boc-(R)-γ-(3-methyl-benzyl)-L-proline

Boc-(R)-γ-(3-bromo-benzyl)-L-proline

Boc-(R)-γ-(2-fluoro-benzyl)-L-proline

Boc-(R)-γ-(2-methyl-benzyl)-L-proline