Chiral amino alcohols as intermediates in the stereocontrolled synthesis of 1,3-disubstituted tetrahydroisoquinolines and protoberberines

被引:38
作者
Carrillo, L [1 ]
Badía, D [1 ]
Domínguez, E [1 ]
Anakabe, E [1 ]
Osante, I [1 ]
Tellitu, I [1 ]
Vicario, JL [1 ]
机构
[1] Univ Basque Country, Fac Ciencias, Dept Quim Organ, Bilbao 48080, Spain
关键词
D O I
10.1021/jo981326h
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
An efficient stereocontrolled synthetic approach to (3S)-3-aryltetrahydroisoquinoline Sd and (1S,3S)-3-aryl-1-methyltetrahydroisoquinolines 3a-c by a Pictet-Spengler heterocyclization reaction of optically active (95% ee) (S)-1,2-diarylethylamines 2a-c is presented. An alternative route toward obtaining the epimeric derivative of 3a, tetrahydroisoquinoline (1R,3S)-6, was also achieved by a stereocontrolled ring opening process carried out on the oxazolotetrahydroisoquinoline 9. Tetrahydroisoquinoline 8 was employed for the stereoselective preparation of(5S,6S, 14S)-6-phenyl-2,3,10,11-tetramethoxyprotoberberin-5-ol (12), a new type of 5,6-disubstituted protoberberine derivative with excellent (d.e>95% by H-1 NMR) stereoselection.
引用
收藏
页码:1115 / 1120
页数:6
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