(2S-(2alpha,3beta,4beta))-2-carboxy-4-(1-methylethenyl)-3-pyrrolidineacetic acid

(2S,4R)-2-amino-4-[(E)-3-(2-methoxyphenyl)prop-2-enyl]pentanedioic acid

(2S,4R)-4-allyl glutamate

(2S)-2-aminopentanedioic acid

2-Amino-4-but-2-enyl-pentanedioic acid(LY339180)

(2S,4R)-2-amino-4-[(E)-3-(4-chlorophenyl)prop-2-enyl]pentanedioic acid

(2S,4R)-2-Amino-4-((E)-3-naphthalen-2-yl-allyl)-pentanedioic acid

(S)-2-Amino-4-cyclopentylidene-pentanedioic acid

1-(3-bromophenyl)-3-[5-chloro-2-(1H-tetrazol-5-yl-phenyl]urea

2-(3-(3-bromophenyl)ureido)-4-chlorobenzoic acid

2,3-Dihydroxy-6-nitro-benzo[f]quinoxaline-7-sulfonic acid amide

1-[5-chloro-2-(5-oxo-4,5-dihydro-[1,2,4]oxadiazol-3-yl)-phenyl]-3-(3-bromophenyl)urea

2-[3-(3-bromophenyl)ureido]-4-chlorobenzenesulfonic acid

2-[2-[(3-bromophenyl)carbamoylamino]-4-chlorophenyl]acetic acid

4-Chloro-2-(3-naphthalen-2-yl-ureido)-benzoic acid

(2S,4R)-2-Amino-4-methyl-pentanedioic acid

(3S,4aR,6S,8aR)-6-[[(2S)-2-carboxy-4,4-difluoropyrrolidin-1-yl]methyl]-1,2,3,4,4a,5,6,7,8,8a-decahydroisoquinoline-3-carboxylic acid

2-Amino-4-prop-2-ynyl-pentanedioic acid

(2S,4R)-2-amino-4-[(Z)-3-phenylprop-2-enyl]pentanedioic acid

(2S)-2-amino-4-methylidenepentanedioic acid

2-Amino-4-(2-methyl-3-phenyl-allyl)-pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-(4-fluorophenyl)prop-2-enyl]pentanedioic acid

(7-{3-[3-(4-Nitro-phenyl)-ureidomethyl]-pyrrol-1-yl}-2,3-dioxo-6-trifluoromethyl-3,4-dihydro-2H-quinoxalin-1-yl)-acetic acid

2-Amino-4-prop-2-ynyl-pentanedioic acid

2-Amino-4-(3-phenyl-prop-2-ynyl)-pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-(3-chlorophenyl)prop-2-enyl]pentanedioic acid

3-(6-Nitro-2,3-dioxo-7-pyrrol-1-yl-3,4-dihydro-2H-quinoxalin-1-yl)-propionic acid

2-[6-nitro-2,3-dioxo-7-[3-[[4-(2-phenylethyl)piperazin-1-yl]methyl]pyrrol-1-yl]-4H-quinoxalin-1-yl]acetic acid

(2S,4R)-2-amino-4-[(E)-3-(2-chlorophenyl)prop-2-enyl]pentanedioic acid

2-Amino-4-but-2-ynyl-pentanedioic acid

2-[7-[3-(aminomethyl)pyrrol-1-yl]-6-nitro-2,3-dioxo-4H-quinoxalin-1-yl]acetic acid

(2S,4R)-2-amino-4-[(E)-3-(2,6-dichlorophenyl)prop-2-enyl]pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-phenylprop-2-enyl]pentanedioic acid

(2S,4R)-4-propylglutamic acid

(S)-2-Amino-4-ethylidene-pentanedioic acid

2-Amino-4-(3-chloro-allyl)-pentanedioic acid

2-Amino-4-pent-2-enyl-pentanedioic acid

2-[6-nitro-2,3-dioxo-7-[3-[(4-phenylpiperidin-1-yl)methyl]pyrrol-1-yl]-4H-quinoxalin-1-yl]acetic acid

(2S,4R)-2-amino-4-[(E)-3-(4-nitrophenyl)prop-2-enyl]pentanedioic acid

(6-Nitro-2,3-dioxo-7-pyrrol-1-yl-3,4-dihydro-2H-quinoxalin-1-yl)-acetic acid

(2S,4R)-2-amino-4-[(E)-3-(3,4-dichlorophenyl)prop-2-enyl]pentanedioic acid

2-[7-[3-[(4-benzylpiperazin-1-yl)methyl]pyrrol-1-yl]-6-nitro-2,3-dioxo-4H-quinoxalin-1-yl]acetic acid

(2S,4R)-2-amino-4-[(E)-3-naphthalen-1-ylprop-2-enyl]pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-(4-methylphenyl)prop-2-enyl]pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-(4-cyanophenyl)prop-2-enyl]pentanedioic acid

2-Amino-4-but-2-enyl-pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-(4-phenylphenyl)prop-2-enyl]pentanedioic acid

1-(4-Carboxymethyl-7-nitro-2,3-dioxo-1,2,3,4-tetrahydro-quinoxalin-6-yl)-1H-pyrrole-3-carboxylic acid

(2S,4R)-2-amino-4-[(E)-3-(4-methylsulfanylphenyl)prop-2-enyl]pentanedioic acid

(6-Nitro-2,3-dioxo-7-{3-[(3-phenyl-propylamino)-methyl]-pyrrol-1-yl}-3,4-dihydro-2H-quinoxalin-1-yl)-acetic acid

(2S,4R)-2-amino-4-[(E)-3-(3-methoxyphenyl)prop-2-enyl]pentanedioic acid

2-Amino-4-hexyl-pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-(4-bromophenyl)prop-2-enyl]pentanedioic acid

2-Amino-4-(2-chloro-allyl)-pentanedioic acid

(2S,4R)-2-Amino-4-(3-phenyl-propyl)-pentanedioic acid

(S)-2-Amino-4-[4,4-diphenyl-but-(Z)-ylidene]-pentanedioic acid

2-Amino-4-pent-2-ynyl-pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-[4-(trifluoromethoxy)phenyl]prop-2-enyl]pentanedioic acid

2-Allyl-4-amino-pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-(3,4-dimethoxyphenyl)prop-2-enyl]pentanedioic acid

(S)-2-Amino-4-[(E)-but-2-en-(Z)-ylidene]-pentanedioic acid

(S)-2-Amino-4-propylidene-pentanedioicacid

(2S,4R)-2-amino-4-[(E)-3-(4-methoxyphenyl)prop-2-enyl]pentanedioic acid

2-Amino-4-pent-2-enyl-pentanedioic acid

3-(7-{3-[(Benzyl-methyl-amino)-methyl]-pyrrol-1-yl}-6-nitro-2,3-dioxo-3,4-dihydro-2H-quinoxalin-1-yl)-propionic acid

(2S,4R)-2-amino-4-[(E)-3-(4-carboxyphenyl)prop-2-enyl]pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-(4-propan-2-ylphenyl)prop-2-enyl]pentanedioic acid

2-[6-nitro-2,3-dioxo-7-[3-(piperidin-1-ylmethyl)pyrrol-1-yl]-4H-quinoxalin-1-yl]acetic acid

(2S,4R)-4-pentylglutamic acid

2-Amino-4-(3-methyl-but-2-enyl)-pentanedioic acid

(2S,4R)-2-amino-4-[(E)-3-[4-(trifluoromethyl)phenyl]prop-2-enyl]pentanedioic acid

(S)-2-Amino-4-[2,2-dimethyl-cyclopent-(Z)-ylidene]-pentanedioic acid

(S)-2-Amino-4-butylidene-pentanedioic acid

2-Amino-4-hex-2-ynyl-pentanedioic acid

(2S,4E)-2-amino-4-(2-methylpropylidene)pentanedioic acid

(S)-2-Amino-4-[1-cyclopentyl-meth-(E)-ylidene]-pentanedioic acid

(S)-2-Amino-4-[(E)-3-phenyl-prop-2-en-(E)-ylidene]-pentanedioic acid

(S)-2-Amino-4-(2,2-dimethyl-propylidene)-pentanedioic acid

(S)-2-Amino-4-cyclobutylidene-pentanedioic acid

(S)-2-Amino-4-[2,2-dimethyl-cyclopent-(E)-ylidene]-pentanedioic acid

(S)-2-Amino-4-[4,4-diphenyl-but-(E)-ylidene]-pentanedioic acid