A process for preparing a compound of the formula ##STR1## wherein X is H or F, comprising: (a) alkylation of a 3-unsubstituted chiral azetidinone of the formula ##STR2## with cinnamyl bromide or 4-fluorocinnamyl bromide; (b) Wacker oxidation of the product of step (a); (c) reduction of the ketone product of step (b); and (d) debenzylation of the ketone of step (c).
一种制备式为##STR1##的化合物的方法,其中X为H或F,包括:(a)使用
肉桂基溴或4-
氟肉桂基溴烷基化式为##STR2##的3-未取代手性氮杂环
丙酮;(b)Wacker氧化步骤(a)的产物;(c)还原步骤(b)的酮产物;(d)脱苄基步骤(c)的酮。