6-chloro-3-(2-ethoxy-3,4-dioxo-cyclobut-1-enylamino)-2-hydroxy-N-methoxy-N-methyl-benzenesulfonamide → HCID 86658405, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 6-chloro-3-(2-ethoxy-3,4-dioxocyclobut-1-enylamino)-2-hydroxy-N-methoxy-N-methylbenzenesulfonamide (Intermediate A) (500 mg, 1.279 mmol) in MeCN was added TEA (1.783 ml, 12.79 mmol) and (R)-1-(tetrahydro-furan-2-yl)-propylamine (1 g, 7.74 mmol) (Intermediate DA). The reaction mixture was heated to 70° C. over night. The reaction mixture was evaporated to dryness. The residue was dissolved in DCM and washed with 0.1M aqueous HCl. The organic layer was dried over MgSO4, filtered and evaporated to dryness. The diastereomers were separated by Supercritical fluid chromatography according to the following conditions:

Provenance & Evidence