Syntheses of pyrimidine and purine analogs derived from 1,2,6-thiadiazine 1,1-dioxide
作者:C. Ochoa、M. Stud
DOI:10.1002/jhet.5570150208
日期:1978.3
5-Amino-3-oxo-2H, 4H-1,2,6-thiadiazine 1,1-dioxide and the monopotassium salt of 3,5-dioxo-2H, 4H,6H-1,2,6-thiadiazine 1,1-dioxide was obtained by condensation of sulfamide and ethyl cyanacetate and diethyl malonate, respectively. 7-Oxo-1H,4H,6H-imidazo[2,3-c]-1,2,6-thia-diazine 5,5-dioxide was prepared by a multi-step reaction sequence from 5-amino-3-oxo-2H, 4H-1,2,6-thiadiazine 1,1-dioxide.
5-氨基-3-氧代-2 H,4 H -1,2,6-噻二嗪1,1-二氧化物和3,5-二氧代2 H,4 H,6 H -1,2,分别通过磺酰胺与氰基乙酸乙酯和丙二酸二乙酯的缩合反应获得6-噻二嗪1,1-二氧化物。通过多步反应从5-氨基-N-二甲基苯磺酸制备了7-Oxo-1 H,4 H,6 H-咪唑并[2,3 - c ] -1,2,6-噻二嗪5,5-二氧化物3-氧代-2 H,4 H -1,2,6-噻二嗪1,1-二氧化物。