Regioselective Cleavage Reaction of the Aromatic Methylenedioxy Ring. VI. Synthesis of Phenothiazine Analogues by Using the Cleavage Reaction with Sodium Methoxide-Thiols in Dimethyl Sulfoxide and Evaluation of Their Biological Activities.
作者:Yasuhiro IMAKURA、Tatsuya KONISHI、Kazuiti UCHIDA、Hiromu SAKURAI、Shigeru KOBAYASHI、Akihiro HARUNO、Kiyotaka TAJIMA、Shinsuke YAMASHITA
DOI:10.1248/cpb.42.500
日期:——
prepared from the 4-hydroxybenzene derivatives and their Ca2+ antagonistic activities were evaluated. Among these compounds, 2-(2-bromophenylthiomethoxy)-10-(2-diethylaminoacetyl)-3- methoxyphenothiazine (46) showed the most potent Ca2+ antagonistic activity. Biological activity could be conveniently evaluated by measurement of the peak height of the vanadyl ion (+4 oxidation ion) signal produced by
含吸电子基团的芳族亚甲二氧基化合物与甲醇钠-硫醇在二甲亚砜中的反应通过硫醇盐离子对亚甲二氧基环的区域选择性攻击而以良好的产率得到了3-和4-羟基苯衍生物。讨论了亚甲二氧基环裂解反应中硫醇根离子的形成机理和反应性。从4-羟基苯衍生物制备了各种生物活性化合物32a,32d,36b,38b,41b和44-47,并评估了其对Ca2 +的拮抗活性。在这些化合物中,2-(2-溴苯硫基甲氧基)-10-(2-二乙基氨基乙酰基)-3-甲氧基吩噻嗪(46)显示出最有效的Ca2 +拮抗活性。