申请人:ELI LILLY AND COMPANY
公开号:EP0061882A1
公开(公告)日:1982-10-06
isoxazol-3-yfureas of formula
wherein R is C1-C6 alkyl, phenyl, or phenyl substituted with 1-2 halo, C1-C3 alkyl or C1-C3 alkoxy groups;
R1 is hydrogen or C1-C6 alkyl;
R2 is C1-C6 alkyl, -NR3R4, phenyl, or phenyl substituted with 1-2 halo, C1-C3 alkyl or C1-C3 alkoxy groups;
R3 and R" are independently C1-C6 alkyl; or R3 and R4 combine with the nitrogen atom to which they are bonded to form morpholino, pyrrolidino or piperidino; are prepared in a single synthetic step from 3-methyl-5-substituted-1,2,4-oxadiazoles or 3-acyl-1,2,4-oxadiazoles. Novel 3-acyl-1,2,4-oxadiazole intermediates are also described.
式中的异噁唑-3-基脲
其中 R 是 C1-C6 烷基、苯基或被 1-2 个卤代、C1-C3 烷基或 C1-C3 烷氧基取代的苯基;
R1 是氢或 C1-C6 烷基;
R2 是 C1-C6 烷基、-NR3R4、苯基或被 1-2 个卤代、C1-C3 烷基或 C1-C3 烷氧基取代的苯基;
R3 和 R "独立地为 C1-C6 烷基;或 R3 和 R4 与它们所结合的氮原子结合形成吗啉基、吡咯烷基或哌啶基;由 3-甲基-5-取代的-1,2,4-恶二唑或 3-酰基-1,2,4-恶二唑通过单一合成步骤制备。此外,还介绍了新型 3-酰基-1,2,4-恶二唑中间体。