(S)-2-Amino-1-[4-(benzyl-isopropyl-amino)-piperidin-1-yl]-propan-1-one

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

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

(S)-2-氨基-1-{2-[(苄基-乙基-氨基)-甲基]-吡咯烷-1-基}-3-甲基-1-丁酮, (S)-2-Amino-1-{2-[(benzyl-ethyl-amino)-methyl]-pyrrolidin-1-yl}-3-methyl-butan-1-one

(S)-2-Amino-1-{4-[(benzyl-ethyl-amino)-methyl]-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

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

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

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

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

{4-[(Benzyl-isopropyl-amino)-methyl]-piperidin-1-yl}-acetic acid