Acetic Acid → HCID 59134199, compound

Participants

Reaction Steps

50 mg of 6-(4-chlorobenzyl)-1-(2-methoxy-5-chlorobenzenesulfonyl)-3-amino-8-isopropylhexahydropyrazino[1,2-a]pyrimidine-4,7-dione hydrochloride (Example 1) were dissolved in 3 ml of methanol, and 100 μl of acetic acid were added. 100 μl of acetaldehyde and 1 ml of 1M sodium cyanoborohydride solution in THF were added to this solution. After 2 hours, the reaction mixture was evaporated, suspended in 5% Et3N in ethyl acetate and filtered through a small silica gel column. The eluent was evaporated, and the crude substance was dissolved in a mixture of acetonitrile and water and freeze dried. The pure title compound was removed after purification by HPLC. The system and process described under “general processes” was used for this. MW=610.18 (calculated, monoisotopic); measured value (M+H)+: 611.4.

Provenance & Evidence