申请人:Banyu Pharmaceutical Co., Ltd.
公开号:US05446164A1
公开(公告)日:1995-08-29
This invention relates to novel 6,7-dialkoxy-3,4-dihydroisoquinolin-8-ols, a process for preparing the 6,7-dialkoxy-3,4-dihydroisoquinolin-8-ols reioselectively and in a high yield utilizing the Bischler-Napieralski reaction, a process for synthesizing 6,7-dialkoxy-1,2,3,4-tetrahydroisoquinolin-8-ols via the compounds, and use of the 6,7-dialkoxy-3,4-dihydroisoquinolin-8-ols for preparation of the 6,7-dialkoxy-1,2,3,4-tetrahydroisoquinolin-8-ols. It is possible, according to this invention, to obtain the 6,7-dialkoxy-1,2,3,4-tetrahydroisoquinolin-8-ols, which have hitherto been difficult to synthesize, via the 6,7-dialkoxy-3,4-dihydroisoquinolin-8-ols in a high yield.
本发明涉及新型的6,7-二烷氧基-3,4-二氢异喹啉-8-醇,一种利用Bischler-Napieralski反应高效地对6,7-二烷氧基-3,4-二氢异喹啉-8-醇进行立体选择性合成的方法,一种通过该化合物合成6,7-二烷氧基-1,2,3,4-四氢异喹啉-8-醇的方法,以及利用6,7-二烷氧基-3,4-二氢异喹啉-8-醇制备6,7-二烷氧基-1,2,3,4-四氢异喹啉-8-醇的用途。根据本发明,可以高产地通过6,7-二烷氧基-3,4-二氢异喹啉-8-醇合成迄今难以合成的6,7-二烷氧基-1,2,3,4-四氢异喹啉-8-醇。