(3-phenoxybenzyl)-L-proline

(2,3,4-trimethoxybenzyl)-L-proline

(3,4,5-trimethoxybenzyl)-L-proline

(5-allyl-2-hydroxy-3-methoxybenzyl)-L-proline

(4-morpholinobenzyl)-L-proline

((5-(2-fluorophenyl)-1H-pyrrol-3-yl)methyl)-L-proline

(2-(1,3-dioxoisoindolin-2-yl)ethyl)-L-proline

(5-methyl-2-phenylhex-2-en-1-yl)-L-proline

((2,2-difluorobenzo[d][1,3]dioxol-5-yl)methyl)-L-proline

(2-bromobenzyl)-L-proline

(4-bromobenzyl)-L-proline

(4-(diethylamino)benzyl)-L-proline

(4-(pyrrolidin-1-yl)benzyl)-L-proline

((5-bromofuran-2-yl)methyl)-L-proline

((4-oxo-4H-chromen-3-yl)methyl)-L-proline

(4-(1H-pyrazol-1-yl)benzyl)-L-proline