作者:Tobias Babl、Oliver Reiser
DOI:10.1021/acs.joc.2c00272
日期:2022.5.6
The first enantioselective synthesis of (S)-meptazinol in 14 steps from commercially available ethyl 4-oxo-3,4-dihydropyridine-1(2H)-carboxylate, being widely used in racemic form for pain treatment, and, en route, the formal synthesis of two anti-Alzheimer’s agents are reported. A novel ring expansion of 2-azabicyclo[4.1.0]heptanes, readily available via the stereoselective cyclopropanation of 1,2,3
首次从市售的 4-oxo-3,4-dihydropyridine-1( 2H )-羧酸乙酯分 14 个步骤选择性合成 ( S )-meeptazinol ,广泛用于外消旋形式的疼痛治疗,并且在途中,报道了两种抗阿尔茨海默病药物的正式合成。通过 1,2,3,4-四氢吡啶-4-醇的立体选择性环丙烷化很容易获得 2-氮杂双环 [4.1.0] 庚烷的新型扩环,为 3,3-二取代氮杂环戊烷提供了有效的途径,代表了多种获批药物的核心。