(S)-3-Hydroxymethyl-1-methoxy-3,5,6,7-tetrahydro-pyrrolo[1,2-c]pyrimidine-4-carboxylic acid methyl ester

(S)-3-Acetoxymethyl-1-methoxy-3,5,6,7-tetrahydro-pyrrolo[1,2-c]pyrimidine-4-carboxylic acid methyl ester

(S)-3-Acetoxymethyl-1-oxo-1,2,3,5,6,7-hexahydro-pyrrolo[1,2-c]pyrimidine-4-carboxylic acid methyl ester