Asymmetric reduction of 7,8-difluoro-3-methyl-2<i>H</i>-1,4-benzoxazine. Synthesis of a key intermediate of (<i>S</i>)-(-)-ofloxacin (DR-3355)
作者:Shohgo Atarashi、Hideaki Tsurumi、Toshihiro Fujiwara、Isao Hayakawa
DOI:10.1002/jhet.5570280222
日期:1991.2
An efficient, highly enantioselective synthesis of (S)-(-)-7,8-difluoro-2,3-dihydro-3-methyl-4H-1,4-benzoxazine, a key intermediate of (S)-(-)-ofloxacin, using various chiral sodium triacyloxyborohydrides as reducing agents is reported.
的高效,高对映选择性合成(小号) - ( - ) - 7,8-二氟-2,3-二氢-3-甲基-4- ħ -1,4-苯并恶嗪,关键中间体的(小号) - ( -氧氟沙星,使用各种手性三酰氧基硼氢化钠作为还原剂的报道。