4-substituted-1,2,3,4-tetrahydro-3,3-dimethylisoquinolines. II.
作者:George Bobowski、Jeffrey M. Gottlieb
DOI:10.1002/jhet.5570190102
日期:1982.1
A practical synthesis (Scheme I) is described for the preparation of a series of 4-substituted-3,3-dimethyl-1,2,3,4-tetrahydroisoquinolines (3). Treatment of α-(1-amino-1-methylethyl)arylmethanols or α-(1-amino-1-methylethyl)heteroarylmethanols (5) with aromatic aldehydes gave imines 7 from which amino alcohols 8 were derived by reduction with potassium borohydride. Acid catalyzed cyclization of 8
描述了用于制备一系列4-取代的3,3-二甲基-1,2,3,4-四氢异喹啉(3)的实用合成方法(方案I )。用芳族醛处理α-(1-氨基-1-甲基乙基)芳基甲醇或α-(1-氨基-1-甲基乙基)杂芳基甲醇(5),得到亚胺7,通过用硼氢化钾还原而得到氨基醇8。酸催化环化的8得到3。通过Friedel-Crafts酰化安装酰基取代基作为最后步骤。简要描述了3a(1)的生物活性。