Spiro[(2,3-dihydro-2-oxo-imidazo[1,2-<i>a</i>]pyridine)-3,3-(3,4-dihydro-2-methyl-4-oxo-2<i>H</i>-1,2-benzothiazine 1,1-dioxide)]-A novel product derived from piroxicam
作者:Charles P. Norris、Helen Berke、Joseph G. Lombardino、Jon Bordner
DOI:10.1002/jhet.5570220346
日期:1985.5
A novel compound, spiro[(2,3-dihydro-2-oxo-imidazo[1,2-a]pyridine)-3,3-(3,4-dihydro-2-methyl-4-oxo-2H-1,2-benzothiazine 1,1-dioxide)] (3), was isolated during an attempt to convert 4-hydroxy-2-methyl-N-(2-pyridinyl)-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide (1) (Piroxicam) to an O-trifluoromethanesulfonyl ester. A possible mechanism is offered to explain this unusual transformation.
的新型化合物,螺[(2,3-二氢-2-氧代-咪唑并[1,2一]吡啶)-3,3-(3,4-二氢-2-甲基-4-氧代-2 ħ -在尝试转化4-羟基-2-甲基-N-(2-吡啶基)-2 H -1,2-苯并噻嗪-3-的过程中,分离了1,2-苯并噻嗪1,1-二氧化物)(3)。甲酰胺1,1-二氧化物(1)(吡罗昔康)合成O-三氟甲磺酰基酯。提供了一种可能的机制来解释这种不寻常的转变。