(S)-2-Amino-1-{3-[(benzyl-ethyl-amino)-methyl]-piperidin-1-yl}-3-methyl-butan-1-one

(S)-2-Amino-1-[(R)-3-(benzyl-isopropyl-amino)-piperidin-1-yl]-3-methyl-butan-1-one

(S)-2-Amino-1-{3-[(benzyl-cyclopropyl-amino)-methyl]-piperidin-1-yl}-3-methyl-butan-1-one

[(R)-3-(Benzyl-methyl-amino)-pyrrolidin-1-yl]-acetic acid

[(S)-3-(Benzyl-methyl-amino)-piperidin-1-yl]-acetic acid

{3-[(苄基-乙基-氨基)-甲基]-吡咯烷-1-基}-乙酸, {3-[(Benzyl-ethyl-amino)-methyl]-pyrrolidin-1-yl}-acetic acid

(1R,4R)-[4-(Benzyl-methyl-amino)-cyclohexylamino]-acetic acid

{2-[(Benzyl-isopropyl-amino)-methyl]-pyrrolidin-1-yl}-acetic acid

{2-[(Benzyl-ethyl-amino)-methyl]-piperidin-1-yl}-acetic acid

[3-(Benzyl-isopropyl-amino)-piperidin-1-yl]-acetic acid

[4-(Benzyl-isopropyl-amino)-cyclohexylamino]-acetic acid