3-bromo-hexahydro-thieno[3,2-b]pyridin-5-one

(3aS)-3t-azido-(3ar,7ac)-hexahydro-thieno[3,2-b]pyridin-5-one

3-((2S)-4c-amino-3t-bromo-tetrahydro-thiophen-2r-yl)-propionic acid methyl ester, hydrobromide

5-((S)-2-oxo-2,3,4,6-tetrahydro-1H-thieno[3,4-d]imidazol-4-yl)-pentanoic acid