申请人:SUMITOMO PHARMACEUTICALS COMPANY, LIMITED
公开号:EP0232786A1
公开(公告)日:1987-08-19
A compound of the formula:
wherein R1, R2, R3 and R4 are each a hydrogen atom, a lower alkyl group, an ar(lower)alkyl group or an aryl group, or R1 and R2 may be combined together to form a lower alkylene group and/or R3 and R4 are combined together to form a lower alkylene group, or R1, R2, R3 and R4 may be combined together to form an o-phenylene group, X is a hologen atom and Y is an oxygen atom or a nitrogen atom substituted with lower alkyl or aryl, which is useful as an intermediate in the synthesis of 1 β-methylcarbapenem compounds valuable as antibiotics.
式中的化合物:
其中 R1、R2、R3 和 R4 各为氢原子、低级烷基、芳(低)烷基或芳基,或 R1 和 R2 可结合在一起形成低级亚烷基和/或 R3 和 R4 结合在一起形成低级亚烷基,或 R1、R2、R3 和 R4 可结合在一起形成邻苯基,X 为全息原子,Y 为氧原子或被低级烷基或芳基取代的氮原子、或 R1、R2、R3 和 R4 结合在一起形成邻苯基,X 是全息原子,Y 是氧原子或被低级烷基或芳基取代的氮原子,可用作合成有抗生素价值的 1 β-甲基碳青霉烯化合物的中间体。