Efficient Synthesis of a Key Intermediate of DV-7751 via Optical Resolution or Microbial Reduction.
作者:Akihiko MIYADERA、Koji SATOH、Akihiro IMURA
DOI:10.1248/cpb.48.563
日期:——
synthesis of the C-10 substituent of DV-7751 (1), a novel quinolone carboxylic acid, were established. The first method utilizes an optical resolution of racemic 8-amino-6-benzyl-6-azaspiro[3.4]octane (13), while the second employs an enantioselective microbial reduction of 6-benzyl-5,8-dioxo-6-azaspiro[3.4]octane (8b). The enantiomeric excess of (S)-8-amino-6-benzyl-6-azaspiro[3.4]octane (11) with each
建立了两种新型的喹诺酮羧酸DV-7751(1)的C-10取代基的有效合成方法。第一种方法利用外消旋的8-氨基-6-苄基-6-azaspiro [3.4]辛烷的光学拆分[13],第二种方法利用对映选择性微生物还原6-苄基-5,8-二氧代-6-azaspiro的对映体。 [3.4]辛烷(8b)。用每种合成方法,(S)-8-氨基-6-苄基-6-氮杂螺[3.4]辛烷(11)的对映体过量大于96%。