[EN] PREPARATION OF TERT-BUTYL 4-((1R,2S,5R)-6- (BENZYLOXY)-7-0X0-1,6-DIAZABICYCL0[3.2.I]OCTANE-2- CARBOXAMIDO)PIPERIDINE-1-CARBOXYLATE<br/>[FR] PRÉPARATION DE TERT-BUTYL 4-((1R,2S,5R)-6- (BENZYLOXY)-7-OXO-1,6-DIAZABICYCLO[3.2.I]OCTANE-2- CARBOXAMIDO)PIPÉRIDINE-1-CARBOXYLATE
申请人:MERCK SHARP & DOHME
公开号:WO2014200786A1
公开(公告)日:2014-12-18
A process for the preparation of N-protected 6-(piperidin-4-ylcarbamoyl)piperidin-3-yl sulfonates of Formula (III): which comprises contacting a lactone of Formula (II): with an azacycloalkylamine of formula (II-Am): followed by contact with a sulfonyl halide of formula (II-Su): R4-SO2W (II-Su) in the presence of tertiary amine base, wherein PG1 and PG2 are amine protective groups; k, p and q are 0, 1, or 2, and W, R2, R3, R4, R5, R6, R7, R8, and R9 are defined herein. Additional embodiments add a series of process steps leading to the synthesis of 7-oxo-1,6-diazabicyclo[3.2.1]octanes suitable for use as β-lactamase inhibitors.
一种制备N-保护6-(哌啶-4-基甲酰)哌啶-3-基磺酸酯的方法,包括将化合物II的内酯与化合物II-Am的氮杂环烷胺接触,然后与化合物II-Su的磺酰卤接触:R4-SO2W(II-Su),在三级胺碱存在下进行,其中PG1和PG2是胺保护基;k、p和q为0、1或2,W、R2、R3、R4、R5、R6、R7、R8和R9在此定义。另外的实施方案增加了一系列工艺步骤,用于合成适用于用作β-内酰胺酶抑制剂的7-氧代-1,6-二氮杂双环[3.2.1]辛烷。