for the following products
(3S,5S)-3-Methyl-2,2-dioxo-2$l^{6},9-dithiabicyclo[4.3.0]nona-7,10-die N-5-ol | (4S,6S)-5,6-Dihydro-4-hydroxy-6-methylthieno[2,3-b]thiopyran-7,7-dioxide and trans-(4S,6S)-5,6-Dihydro-6-methyl-4H-thieno[2,3-b]thiopyran-4-ol, 7,7-dioxide
