Novel Synthesis of 1-(1,2,3,5,6,7-Hexahydro-<i>s</i>-indacen-4-yl)-3-[4-(1-hydroxy-1-methyl-ethyl)-furan-2-sulfonyl]urea, an Anti-inflammatory Agent
作者:Frank J. Urban、V. John Jasys、Jeffrey W. Raggon、Richard A. Buzon、Paul D. Hill、James F. Eggler、John D. Weaver
DOI:10.1081/scc-120021029
日期:2003.7
Abstract A novel synthesis of the anti-inflammatory agent 1-(1,2,3,5,6,7- hexahydro-s-indacen-4-yl)-3-[4-(1-hydroxy-1-methyl-ethyl)-furan-2-sulfonyl] urea 1 is described. Sulfonamide 5 was prepared starting from ethyl 3-furoate 2. Key steps were a one-pot sulfonylation with chlorosulfonic acid in methylene chloride followed by pyridinium salt formation and reaction with phosphorus pentachloride to
摘要 抗炎剂 1-(1,2,3,5,6,7-hexahydro-s-indacen-4-yl)-3-[4-(1-hydroxy-1-methyl-描述了乙基)-呋喃-2-磺酰基]脲1。从 3-糠酸乙酯 2 开始制备磺酰胺 5。关键步骤是在二氯甲烷中用氯磺酸进行一锅磺酰化,然后形成吡啶盐并与五氯化磷反应以提供 2-(氯磺酰基)-4-糠酸乙酯 7。该磺酰氯用碳酸氢铵处理以形成磺酰胺 8,然后用过量的甲基氯化镁处理以提供 4-(1-羟基-1-甲基-乙基)-呋喃-2-磺酰胺 5。4-异氰酸根合-1, 2,3,5,6,7-六氢-s-吲哚16 由茚满分五步制备。