3. A pharmaceutical composition according to claim 1, wherein said compound is selected from the group consisting of:
1-[5-(3R,4-Dihydroxy-2-oxobutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S,4-Dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-Fluoro-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-Fluoro-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-Amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-Amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(N-Methyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(N-Methyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(N-Ethyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(N-Ethyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(N-n-Butyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(N-n-Butyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(N-Benzyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(N-Benzyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(N-Acetyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(N-Acetyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(N-Butanoyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(N-Butanoyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(N-Benzoyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(N-Benzoyl)amino-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-Methoxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-Methoxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-Ethoxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-Ethoxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-n-Butoxy-3S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-n-Butoxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(2-Hydroxyethyl)oxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(2-Hydroxyethyl)oxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(3-Hydroxy-n-propyl)oxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(3-Hydroxy-n-propyl)oxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(Carboxymethyl)oxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(Carboxymethyl)oxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S-(3-Carboxy-n-propyl)oxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2R-(3-Carboxy-n-propyl)oxy-3R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S,4-Dihydroxy-3-oxobutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(2S,4-Dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-Fluoro-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-Fluoro-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-Amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-Amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(N-Methyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-(N-Methyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(N-Ethyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-(N-Ethyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(N-n-Butyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-(N-n-Butyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(N-Benzyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-(N-Benzyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(N-Acetyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-(N-Acetyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(N-Butanoyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-(N-Butanoyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(N-Benzoyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-(N-Benzoyl)amino-2R,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-Methoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-Methoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-Ethoxy-2S, 4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-Ethoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-n-Butoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-n-Butoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(2-Hydroxyethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-(2-Hydroxyethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(3-Hydroxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-(3-Hydroxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(Carboxymethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-(5-(3S-(Carboxymethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3R-(3-Carboxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
1-[5-(3S-(3-Carboxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
4-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-1,3S,4R-trihydroxybutane-2-one,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]butane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-fluorobutane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-fluorobutane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-(N-methyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-(N-methyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-(N-ethyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-(N-ethyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-(N-n-butyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-(N-n-butyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-(N-benzyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-(N-benzyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-(N-acetyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-(N-acetyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-(N-butanoyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-(N-butanoyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-(N-benzoyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-(N-benzoyl)aminobutane-1R,2R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-methoxybutane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-methoxybutane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-ethoxybutane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-ethoxybutane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-n-butoxybutane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-n-butoxybutane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-[(2-hydroxyethyl)oxy]butane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-[(2-hydroxyethyl)oxy]butane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-[(3-hydroxy-n-propyl)oxy]butane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-[(3-hydroxy-n-propyl)oxy]butane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-[(carboxymethyl)oxy]butane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-[(carboxymethyl)oxy]butane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3R-[(3-carboxy-n-propyl)oxy]butane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-3S-[(3-carboxy-n-propyl)oxy]butane-1R,2S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-1R,3R,4-trihydroxybutane-2-one,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]butane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-fluorobutane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-fluorobutane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-(N-methyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-(N-methyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-(N-ethyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-(N-ethyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-(N-n-butyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-(N-n-butyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-(N-benzyl)aminbutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-(N-benzyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-(N-acetyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-(N-acetyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-(N-butanoyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-(N-butanoyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-(N-benzoyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-(N-benzoyl)aminobutane-1S,3S,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-methoxybutane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-methoxybutane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-ethoxybutane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-ethoxybutane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-n-butoxybutane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-n-butoxybutane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-[(2-hydroxyethyl)oxy]butane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-[(2-hydroxyethyl)oxy]butane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-[(3-hydroxy-n-propyl)oxy]butane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-[(3-hydroxy-n-propyl)oxy]butane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-[(carboxymethyl)oxy]butane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-[(carboxymethyl)oxy]butane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2R-[(3-carboxy-n-propyl)oxy]butane-1R,3R,4-triol,
1-[5-(2S,3R,4-Trihydroxybutyl)pyrazin-2-yl]-2S-[(3-carboxy-n-propyl)oxy]butane-1R,3R,4-triol,
1-[5-(2S,4-Dihydroxy-3-oxobutyl)pyrazin-2-yl]-2S,4-dihydroxybutane-1,3-diane,
4-[5-(2S,4-Dihydroxybutyl)pyrazin-2-yl]butane-1,3S-diol,
4-[5-(3R-Fluoro-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-difluorobutane-1,3S-diol,
4-[5-(3S-Fluoro-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-difluorobutane-1,3S-diol,
1-[5-(3R-Amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-diaminobutane-1,3S-diol,
1-[5-(3S-Amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-diaminobutane-1,3S-diol,
1-[5-(3R-(N-Methyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-methyl)amino]butane-1,3S-diol,
1-[5-(3S-(N-Methyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-methyl)amino]butane-1,3S-diol,
1-[5-(3R-(N-Ethyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-ethyl)amino]butane-1,3S-diol,
1-[5-(3S-(N-Ethyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-ethyl)amino]butane-1,3S-diol,
1-[5-(3R-(N-n-Butyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-n-butyl)amino]butane-1,3S-diol,
1-[5-(3S-(N-n-Butyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-n-butyl)amino]butane-1,3S-diol,
1-[5-(3R-(N-Benzyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-benzyl)amino]butane-1,3S-diol,
1-[5-(3S-(N-Benzyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-benzyl)amino]butane-1,3S-diol,
1-[5-(3R-(N-Acetyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-acetyl)amino]butane-1,3S-diol,
1-[5-(3S-(N-Acetyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-acetyl)amino]butane-1,3S-diol,
1-[5-(3R-(N-Butanoyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-butanoyl)amino]butane-1,3S-diol,
1-[5-(3S-(N-Butanoyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-butanoyl)amino]butane-1,3S-diol,
1-[5-(3R-(N-Benzoyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-benzoyl)amino]butane-1,3S-diol,
1-[5-(3S-(N-Benzoyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-benzoyl)amino]butane-1,3S-diol,
1-[5-(3R-Methoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-dimethoxybutane-1,3S-diol,
1-[5-(3S-Methoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-dimethoxybutane-1,3S-diol,
1-[5-(3R-Ethoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-diethoxybutane-1,3S-diol,
1-[5-(3S-Ethoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-diethoxybutane-1,3S-diol,
1-[5-(3R-n-Butoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di-n-butoxybutane-1,3S-diol,
1-[5-(3S-n-Butoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di-n-butoxybutane-1,3S-diol,
1-[5-(3R-(2-Hydroxyethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(2-hydroxyethyl)oxy]butane-1,3S-diol,
1-[5-(3S-(2-Hydroxyethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(2-hydroxyethyl)oxy]butane-1,3S-diol,
1-[5-(3R-(3-Hydroxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(3-hydroxy-n-propyl)oxy]butane-1,3S-diol,
1-[5-(3S-(3-Hydroxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(3-hydroxy-n-propyl)oxy]butane-1,3S-diol,
1-[5-(3R-(Carboxymethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(carboxymethyl)oxy]butane-1,3S-diol,
1-[5-(3S-(Carboxymethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(carboxymethyl)oxy]butane-1,3S-diol,
1-[5-(3R-(3-Carboxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(3-carboxy-n-propyl)oxy]butane-1,3S-diol,
1-[5-(3S-(3-Carboxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(3-carboxy-n-propyl)oxy]butane-1,3S-diol,
1-[5-(3R,4-Dihydroxy-2-oxobutyl)pyrazin-2-yl]-3R,4-dihydroxybutane-1,2-dione,
4-[5-(2S,4-Dihydroxybutyl)pyrazin-2-yl]butane-1,3S-diol,
4-[5-(3R-Fluoro-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-difluorobutane-1,3S-diol,
4-[5-(3S-Fluoro-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-difluorobutane-1,3S-diol,
4-[5-(3R-Amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-diaminobutane-1,3S-diol,
4-[5-(3S-Amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-diaminobutane-1,3S-diol,
4-[5-(3R-(N-Methyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-methyl)amino]butane-1,3S-diol,
4-[5-(3S-(N-Methyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-methyl)amino]butane-1,3S-diol,
4-[5-(3R-(N-Ethyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-ethyl)amino]butane-1,3S-diol,
4-[5-(3S-(N-Ethyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-ethyl)amino]butane-1,3S-diol,
4-[5-(3R-(N-n-Butyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-n-butyl)amino]butane-1,3S-diol,
4-[5-(3S-(N-n-Butyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-n-butyl)amino]butane-1,3S-diol,
4-[5-(3R-(N-Benzyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-benzyl)amino]butane-1,3S-diol,
4-[5-(3S-(N-Benzyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-benzyl)amino]butane-1,3S-diol,
4-[5-(3R-(N-Acetyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-acetyl)amino]butane-1,3S-diol,
4-[5-(3S-(N-Acetyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-acetyl)amino]butane-1,3S-diol,
4-[5-(3R-(N-Butanoyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-butanoyl)amino]butane-1,3S-diol,
4-[5-(3S-(N-Butanoyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-butanoyl)amino]butane-1,3S-diol,
4-[5-(3R-(N-Benzoyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(N-benzoyl)amino]butane-1,3S-diol,
4-[5-(3S-(N-Benzoyl)amino-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(N-benzoyl)amino]butane-1,3S-diol,
4-[5-(3R-Methoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-dimethoxybutane-1,3S-diol,
4-[5-(3S-Methoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-dimethoxybutane-1,3S-diol,
4-[5-(3R-Ethoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-diethoxybutane-1,3S-diol,
4-[5-(3S-Ethoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-diethoxybutane-1,3S-diol,
4-[5-(3R-n-Butoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di-n-butoxybutane-1,3S-diol,
4-[5-(3S-n-Butoxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di-n-butoxybutane-1,3S-diol,
4-[5-(3R-(2-Hydroxyethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(2-hydroxyethyl)oxy]butane-1,3S-diol,
4-[5-(3S-(2-Hydroxyethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(2-hydroxyethyl)oxy]butane-1,3S-diol,
4-[5-(3R-(3-Hydroxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(3-hydroxy-n-propyl)oxy]butane-1,3S-diol,
4-[5-(3S-(3-Hydroxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(3-hydroxy-n-propyl)oxy]butane-1,3S-diol,
4-[5-(3R-(Carboxymethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(carboxymethyl)oxy]butane-1,3S-diol,
4-[5-(3S-(Carboxymethyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(carboxymethyl)oxy]butane-1,3S-diol,
4-[5-(3R-(3-Carboxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2R,4R-di[(3-carboxy-n-propyl)oxy]butane-1,3S-diol,
4-[5-(3S-(3-Carboxy-n-propyl)oxy-2S,4-dihydroxybutyl)pyrazin-2-yl]-2S,4S-di[(3-carboxy-n-propyl)oxy]butane-1,3S-diol,
1-[5-(3S,4-Dihydroxy-1E-butenyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol,
4-Fluoro-1-[5-(2S,3R,4-trihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3S-triol,
1-[5-(4-Fluoro-2S,3S-dihydroxybutyl)pyrazin-2-yl]butane-1R,2S,3R,4-tetraol
and their salts with a pharmaceutically acceptable inorganic or organic acid. |