作者:ATTIMOGAE SHIVAMURTHY HARISHA、SURESH PARAMESHWAR NAYAK、PAVAN M S、SHRIDHARA K、SUNDARRAJA RAO K、RAJENDRA K、KOTEPPA PARI、SIVARAMKRISHNAN H、GURU ROW T N、KUPPUSWAMY NAGARAJAN
DOI:10.1007/s12039-015-0961-4
日期:2015.11
established. NMR methods for deriving E and Z geometry and other similar molecules have been successfully established, mainly by studying the proton coupled 13C spectra. Preliminary studies reveal in vitro activity for some compounds against tuberculosis (TB) and dengue. A new synthesis of entacapone 1 of a designed precursor under very mild conditions is reported. Crystal structure of its Z isomer, NMR methods
儿茶酚-O-甲基转移酶(COMT)抑制剂entacapone(E-异构体)的新合成是在温和条件下通过胺介导的前体2-Cyano-3-(3-羟基-4-甲氧基- 5-硝基苯基)丙-2-烯酰胺,其中与硝基相邻的甲氧基在亲核攻击下脱甲基。在2-氰基-3-(3,4-二甲氧基-5-硝基苯基)丙酸烯乙酯,2-氰基-3-(3,4-二甲氧基-5-硝基苯基)-N,N上实现了类似的脱甲基-二乙基丙-2-烯酰胺,2-氰基-3-(3-羟基-4-甲氧基-5-硝基苯基)丙酸2-烯酸酯和2-氰基-3-(4-甲氧基-3-硝基苯基)丙酸乙酯-2-烯酸酯。已经研究了脱甲基的范围。2-氰基-3-(3,4-二甲氧基-5-硝基苯基)丙-2-烯酸酯的类似物,其中甲氧基不与NO 2相邻基团不受影响并且酚衍生物产生胺盐。恩他卡朋已与有机碱转化为盐。已经建立了戊酮(Z-异构体)的异构体(Z-异构体的重要人类代谢产物)的晶体结构。主要通过研究质子耦合的13