Synthesis of a Chiral α-(Aminooxy)arylacetic Ester. I. A Route through Optical Resolution of a Racemic α-(Phthalimidooxy)arylacetic Acid
作者:Hisao Iwagami、Masakazu Nakazawa、Masanobu Yatagai、Toyoto Hijiya、Yutaka Honda、Hirokazu Naora、Takashi Ohnuki、Toshihide Yukawa
DOI:10.1246/bcsj.63.3073
日期:1990.11
A synthetic route has been developed to the synthesis of a chiral O-alkyloxime (S)-16, which can be a synthetic intermediate for a potent antipsedomonal cephalosporin antibiotic M-14659 (1). The oxime moiety in (S)-16 has a chiral center at the carbon atom adjacent to the oxygen atom. We have achieved that (S)-16 can be prepared via t-butyl 2-aminooxy-2-[3,4-(isopropylidenedioxy)phenyl]acetate [(S)-15]
已开发出合成手性 O-烷基肟 (S)-16 的合成路线,该合成路线可以是强效抗假单胞菌头孢菌素抗生素 M-14659 (1) 的合成中间体。(S)-16 中的肟部分在与氧原子相邻的碳原子处具有手性中心。我们已经实现了 (S)-16 可以通过 2-氨基氧基-2-[3,4-(异亚丙基二氧基)苯基]乙酸叔丁酯 [(S)-15] 从光学活性 α-(邻苯二甲酰亚胺氧基) 酸制备(S)-12a 使用奎宁拆分获得。已证明由 (S)-16 制备的 M-14659 完全不含其 (R)-非对映异构体。