Process for preparation of optically active (4R)-substituted monocyclic beta-lactam compounds
申请人:KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0108994A1
公开(公告)日:1984-05-23
An improved process for preparing an optically active (4R)-substituted monocyclic β-lactam compound by subjecting a starting optically active compound to reaction comprising the steps of
(a) conversion of the azido group at C-3 position into amino group with a reducing reagent;
(b) acylation of the amino group;
(c) substitution of the R1 group at C-4 position for a nucleophile and
(d) sulfonation of the N-1 position at a temperature of about 20 to 70 °C.
The products of the present invention are useful as antibiotics and powerful β-lactamase inhibitors.
一种制备光学活性(4R)-取代单环 β-内酰胺化合物的改进工艺,该工艺通过使起始光学活性化合物进行反应来制备,包括以下步骤
(a) 用还原试剂将 C-3 位的叠氮基转化为氨基;
(b) 氨基的酰化反应
(c) 用亲核物取代 C-4 位的 R1 基团,以及
(d) 在约 20 至 70 °C 的温度下对 N-1 位进行磺化。
本发明的产品可用作抗生素和强效β-内酰胺酶抑制剂。