3-Amino-5-methylisoxazole → 6-Benzyl-5,6-dihydro-4-hydroxy-2-methyl-N-(5-methyl-3-isoxazolyl)-1,1-dioxo-2H-1,2,6-thiadiazine-3-carboxamide

Participants

Reaction Steps

The synthesis is effected analogously to Example 1 using in each case 1 equivalent of methyl 6-benzyl-5,6-dihydro-4-hydroxy-2-methyl-1,1-dioxo-2H-1,2,6-thiadiazine-3-carboxylate and 3-amino-5-methylisoxazole. Chromatography over silica gel using a mixture of diisopropyl ether/formic acid=100/1 or recrystallisation from a diisopropyl ether/acetone mixture gives the title compound in a yield of 59%.

Provenance & Evidence