Synthesis and Enantioselectivity of Optically Active 1- and 3-Substituted 4-Phenyl-1,2,3,4-tetrahydroisoquinolin-4-ols and Related Compounds as Norepinephrine Potentiators.
作者:Masaru KIHARA、Motoki IKEUCHI、Satoko ADACHI、Yoshimitsu NAGAO、Hideki MORITOKI、Mari YAMAGUCHI、Zenei TAIRA
DOI:10.1248/cpb.43.1543
日期:——
analysis. The NE potentiating activity of the optically active 3-5 and previously prepared 3-methyl derivatives (3R,4R-6a and 3S,4S-6b) of PI-OH were tested. The results show that compounds 3, 4, and 6 had high enantioselectivity for NE potentiation: the 4R series of the enantiomers exhibited activity but not the 4S-enantiomers. The activity of the 4-desoxy compound 5 also resided exclusively in the 4S-enantiomer
光学活性1,2-二甲基-4-苯基-1,2,3,4-四氢异喹啉-4-醇(1R,4R-3a和1S,4S-3b,1S,4R-4a和1R,4S-4b )和2-甲基-4-苯基-1,2,3,4-四氢异喹啉(4S-5a和4R-5b)的制备是为了研究2的1-,3-和4-取代基的作用-甲基-4-苯基-1,2,3,4-四氢异喹啉-4-醇(PI-OH)(1)对去甲肾上腺素(NE)的增强活性的对映选择性。3-5的构象和绝对构型由1H-NMR和圆二色性(CD)光谱以及单晶X射线衍射分析确定。测试了光学活性3-5和先前制备的PI-OH的3-甲基衍生物(3R,4R-6a和3S,4S-6b)的NE增强活性。结果表明,化合物3、4和6具有较高的NE增强对映选择性:4R系列对映异构体显示出活性,但4S对映异构体没有活性。4-脱氧化合物5的活性也仅存在于4S-对映异构体中。这些发现表明存在针对NE摄取的特异性受体,并且对映异构