C([N:8]1[CH2:16][CH2:15][CH:14]2[CH:10]([CH2:11][C:12]3[CH:19]=[CH:18][S:17][C:13]=32)[CH2:9]1)C1C=CC=CC=1.C([O-])([O-])=O.[K+].[K+].CC(Cl)OC(Cl)=O>ClC(Cl)C>[CH:19]1[C:12]2[CH2:11][CH:10]3[CH:14]([C:13]=2[S:17][CH:18]=1)[CH2:15][CH2:16][NH:8][CH2:9]3The product of step f) (1.16 g, 4.3 mmol) in dichloroethane (21 ml) was treated with K2CO3 (2.38 g, 17.2 mmol) and Ace-Cl (1.86 ml, 17.2 mmol) at 800C for 16 hours. Next, the reaction mixture was filtered, concentrated and the residue was dissolved in anhydrous MeOH (25 ml) and stirred for 1 hour at 22° C. The MeOH was concentrated and triturated with ether to give 874 mg (94%) of the subtitle compound. MS calculated for C10H13NS+H 180, observed 180.
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