CS[C:3]([NH:8][CH2:9][C:10]#[CH:11])=[CH:4][N+:5]([O-:7])=[O:6].Cl.N[CH2:14][CH2:15][SH:16]>>[N+:5]([CH:4]=[C:3]([NH:8][CH2:9][C:10]#[CH:11])[CH2:14][CH2:15][SH:16])([O-:7])=[O:6]A solution of the product of Step A of Example 2 is reacted with about an equimolar amount of cysteamine hydrochloride and about two equivalents of base, and the title product is produced.
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