The invention is related to the preparation of protected piperidine carboxylates suitable for use as intermediates that lead, via a series of additional process steps, including a sulfation of a hydroxy urea compound, to the preparation of the beta lactamase inhibitor (2S,5R)-7-oxo-N-piperidin-4-yl-6-(sulfoxy)-1,6-diazabicyclo[3.2.1]octane-2-carboxamide.
                            本发明涉及制备适用于用作中间体的保护
哌啶羧酸酯,通过一系列的额外工艺步骤,包括对羟基
尿素化合物的磺化,制备β-内酰胺酶抑制剂(2S,5R)-7-氧代-N-
哌啶-4-基-6-(磺酰氧基)-1,6-二氮杂
双环[3.2.1]辛烷-2-羧酰胺。