Dimethyl Sulfoxide → 2-chloro-5-isopropyl-6a-methyl-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one

Reaction equation

[CH3:22][C:23]([O-:24])([CH3:25])[CH3:26].[CH3:27][S:28]([CH3:29])=[O:30].[Cl:1][c:2]1[n:3][c:4]2[c:9]([cH:10][n:11]1)[N:8]([CH:12]([CH3:13])[CH3:14])[C:7](=[O:15])[CH:6]1[N:5]2[CH2:19][CH2:18][O:17][CH2:16]1.[I:20][CH3:21].[OH2:31]>>[Cl:1][c:2]1[n:3][c:4]2[c:9]([cH:10][n:11]1)[N:8]([CH:12]([CH3:13])[CH3:14])[C:7](=[O:15])[C:6]1([CH3:22])[N:5]2[CH2:19][CH2:18][O:17][CH2:16]1