(2015/07/15)
(2014/01/18)
cis-(6S)-4-hydroxy-5,6-dihydro-6-methyl-7,7-dioxo-4H-thieno[2,3-b]thiopyran-2-sulfonamide
acetonitrile
(6S)-4-oxo-5,6-dihydro-6-methyl-7,7-dioxo-4H-thieno[2,3-b]thiopyran-2-sulfonamide
(6S)-5,6-dihydro-6-methyl-4H-thieno[2,3-b]thiopyran-4-one-2-sulfonamide
(S)-6-methyl-4-oxo-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonyl chloride