In connection with our previous study on the β-adrenoceptor activities of the positional isomers of trimetoquinol, various 1-arylmethyl-1, 2, 3, 4-tetrahydroisoquinolines (10b-i) were synthesized. The Barbier reaction of the quaternary salt (7) with arylmethyl halides, followed by sodium monoacetoxyborohydride [NaBH3 (OAc)] reduction in a one-pot procedure, gave the tribenzyltetrahydroisoquinolines (9b-i) in excellent yields. Catalytic debenzylation of 9b-i furnished 10b-i. None of the compounds (10b-i) exhibited significant bronchodilating activity.
关于我们之前对三甲
喹啉位置异构体β-
肾上腺素能受体活性的研究,我们合成了多种1-芳甲基-1,2,3,4-
四氢异喹啉(10b-i)。通过四级盐(7)与芳甲基卤化物的Barbier反应,随后在一锅法程序中用单
乙酸氧
硼氢化钠[NaBH3(OAc)]还原,以优异的产率得到了三苄基
四氢异喹啉(9b-i)。9b-i的催化脱苄基化提供了10b-i。这些化合物(10b-i)均未表现出显著的支气管扩张活性。