Practical and Large-Scale Synthesis of <i>r</i><i>ac</i>-(3<i>S</i>,4a<i>R</i>,10a<i>R</i>)- 6-Methoxy-1-propyl-1,2,3,4,4a,5,10,10a-octahydrobenzo[<i>g</i>]quinoline-3-carboxylic Acid Methyl Ester
作者:Markus Bänziger、Jacques Cercus、Wolfgang Stampfer、Ustun Sunay
DOI:10.1021/op0000531
日期:2000.11.1
pharmaceutically active compounds. A short, efficient synthesis, which is feasible for large-scale manufacturing of rac-(3S,4aR,10aR)-6-methoxy-1-propyl-1,2,3,4,4a,5,10,10a-octahydrobenzo[g]quinoline-3-carboxylic acid methyl ester is presented. As starting materials the cheap and readily available 1,6-dimethoxynaphthalene and ethoxymethylenecyanoacetic acid ethyl ester were chosen. All atoms of the skeleton were
3-取代的八氢苯并[g]喹啉是药物活性化合物的重要中间体。一种短而有效的合成方法,可用于大规模生产 rac-(3S,4aR,10aR)-6-methoxy-1-propyl-1,2,3,4,4a,5,10,10a-octahydrobenzo介绍了[g]喹啉-3-羧酸甲酯。选择廉价且容易获得的 1,6-二甲氧基萘和乙氧基亚甲基氰基乙酸乙酯作为起始材料。通过 7-锂化 1,6-二甲氧基萘与乙氧基亚甲基氰基乙酸乙酯的反应,在第一步中引入了骨架的所有原子。随后加氢,然后进行Birch还原和酸环化,以高收率得到6-甲氧基-2,3,4,4a,5,10-六氢苯并[g]喹啉-3-羧酸盐酸盐。两个六元环的反式融合是在 NaBH4 还原后建立的。间断形成的三甲基甲硅烷基烯酮缩醛在酯化、正丙基化和动力学质子化后,...