The Synthesis of Isoquinoline Alkaloid and Its Related Compounds Using Alanine Derivatives as Chiral Auxiliaries
作者:Takashi Itoh、Kazuhiro Nagata、Masashi Yokoya、Michiko Miyazaki、Keiko Kameoka、Shigeru Nakamura、Akio Ohsawa
DOI:10.1248/cpb.51.951
日期:——
Chiral 1-substituted isoquinoline derivatives, which were obtained by the reaction using alanine derivatives as chiral auxiliaries, were transformed to (S)-2,3,9,10,11-pentamethoxyhomoprotoberberine (7) and a synthetic intermediate for O-methylkreysigine (9) in good yields and high stereoselectivity. The corresponding chiral allyl derivative of isoquinoline was transformed to a pyrrolidinoisoquinoline
通过使用丙氨酸衍生物作为手性助剂的反应获得的手性1-取代的异喹啉衍生物被转化为(S)-2,3,9,10,11-五甲氧基高原型小ine碱(7)和O-甲基克雷西金的合成中间体( 9)产率高且立体选择性高。异喹啉的相应手性烯丙基衍生物以高度对映选择性的方式转化为吡咯烷基异喹啉(16)。