A novel synthetic route to enantiomerically pure 1-benzyltetrahydroisoquinolines (1) was developed via the reaction of oxazolo[2, 3-a]tetrahydroisoquinoline (5) with benzyltriisopropoxytitanium compounds (10). This method was applied to the synthesis of (S)-trimetoquinol (1c; a bronchodilator).
开发了一种新颖的合成路线,用于获取对映体纯的1-苄基四氢
噻嗪啉(1),该路线是通过氧杂
噻唑[2, 3-a]四氢
噻嗪啉(5)与苄基三异丙氧基
钛化合物(10)反应实现的。该方法被应用于(S)-三美托啉(1c;一种支气管扩张剂)的合成。