Boc-(R)-γ-(3-benzothienyl-methyl)-L-proline

Boc-(R)-α-(3-trifluoromethyl-benzyl)-proline

Boc-(R)-α-(4-iodo-benzyl)-proline

Boc-(R)-γ-(3-chloro-benzyl)-L-proline

Boc-(R)-γ-(4-bromo-benzyl)-L-proline

Boc-(R)-γ-(4-iodo-benzyl)-L-proline

Boc-(R)-γ-(2-naphthalenylmethyl)-L-proline

Boc-(R)-γ-(2-cyano-benzyl)-L-proline

Boc-(R)-γ-(2-iodo-benzyl)-L-proline

Boc-(R)-γ-(4-biphenyl-methyl)-L-proline

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

Boc-(R)-γ-(2-trifluoromethyl-benzyl)-L-proline

Boc-(R)-α-(4-trifluoromethyl-benzyl)-proline

Boc-(S)-α-(4-bromo-benzyl)-proline

Boc-(S)-α-(2-bromo-benzyl)-proline

Boc-(R)-α-(2-bromo-benzyl)-proline