申请人:Bristol-Myers Squibb Company
公开号:US05436347A1
公开(公告)日:1995-07-25
A method is provided for preparing a chiral benzaldehyde of the structure ##STR1## by acylating an anhydride of the structure ##STR2## with a chiral oxazolidine of the structure ##STR3## where Q is MgHal or Li, and X, Y and Z are as described herein, to form a keto acid which is reduced and cyclized. The resulting benzaldehyde may be used in making the final anti-thrombotic--anti-vasospastic compounds. Novel intermediates are also provided.
提供了一种制备手性苯甲醛(结构式##STR1##)的方法,该方法通过将结构式##STR2##的酸酐与手性噁唑烷(结构式##STR3##,其中Q为MgHal或Li,X、Y和Z如本文所述)酰化,形成酮酸,然后还原和环化。得到的苯甲醛可用于制备最终的抗血栓-抗血管痉挛化合物。还提供了新的中间体。