Dimethylamine → N-[6-(4-Chlorobenzyl)-1-(2,4-dichlorobenzenesulfonyl)-8-isopropyl-4,7-dioxooctahydropyrazino[1,2-a]pyrimidin-3-yl]methanesulfonamide

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Reaction Steps

64 mg of 6-(4-chlorobenzyl)-1-(2,4-dichlorobenzenesulfonyl)-3-amino-8-isopropylhexahydropyrazino[1,2-a]pyrimidine-4,7-dione hydrobromide (Example 2) were dissolved in 3 ml of DCM. 0.5 mmol of triethylamine and 1.5 equivalents of methanesulfonyl chloride were added to the solution. After 2 hours, 0.5 ml of dimethylamine in THF was added, and the solvent was evaporated in vacuo. The pure title compound was removed after purification by HPLC. The system and process described under “general processes” was used for this. MW=636.04 (calculated, monoisotopic); measured value (M+H)+: 637.4.

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