申请人:——
公开号:US20040077712A1
公开(公告)日:2004-04-22
A process for preparing optically active 2,3-dihydrobenzofuran compounds which comprises subjecting a 2,3-dihydrobenzofuran compound represented by the general formula or a salt thereof to optical resolution with an optically active acid compound:
1
[wherein R
1
and R
2
are each hydrogen or an optionally substituted hydrocarbon group; R
3
is an optionally substituted aromatic group; and C is a benzene ring which may further have a substituent in addition to the amino group]. The process enables industrially advantageous production of intermediates for the synthesis of optically active 2,3-dihydrobenzofuran compounds useful as preventive and/or therapeutic drugs for neurodegenerative diseases and so on.
一种制备光学活性2,3-二氢苯并呋喃化合物的方法,包括将一般式所表示的2,3-二氢苯并呋喃化合物或其盐与光学活性酸化合物进行光学分辨:1 [其中R1和R2均为氢或可选取代的碳氢基团;R3为可选取代的芳香基团;C为苯环,除氨基外还可能有取代基]。该方法可实现工业上优势的中间体生产,用于合成对神经退行性疾病等有预防和/或治疗作用的光学活性2,3-二氢苯并呋喃化合物。