Preparation of New Nitrogen-Bridged Heterocycles. 54. Increased Arene-Arene Interactions of 3-(Bicyclic and Tricyclic Arylmethylthio)thieno [3,4-b] indolizine Derivatives
作者:Akikazu Kakehi、Hiroyuki Suga、Tomonao Kako、Tsuneo Fujii、Nobuaki Tanaka、Tomoshige Kobayashi
DOI:10.1248/cpb.51.1246
日期:——
Some thieno[3,4-b]indolizine derivatives having a 1-naphthylmethylthio, 2-methyl-1-naphthylmethylthio, 2-naphthylmethylthio, or 9-anthrylmethylthio group at the 3-position were prepared and their intramolecular arene-arene interactions were investigated. In comparison with 3-(methylthio)thieno[3,4-b]indolizines which have no such interactions, the (1)H-NMR spectra of title compounds showed large high-field
制备了在3-位具有1-萘甲硫基,2-甲基-1-萘甲硫基,2-萘甲硫基或9-蒽甲硫基的噻吩并[3,4-b]吲哚嗪衍生物,并研究了它们的分子内芳烃-芳烃相互作用。与没有这种相互作用的3-(甲硫基)噻吩并[3,4-b]吲哚并嗪相比,标题化合物的(1)H-NMR光谱显示质子有较大的高场位移(δ0.06-0.89 ppm)在噻吩并[3,4-b]吲哚嗪中的吡啶环的摩尔数是3,并且这些值明显大于3-(苄硫基)噻吩并[3,4-b]吲哚并嗪中的吡啶环的δ增量(<0.3ppm)。UV光谱还显示出由于芳烃-芳烃相互作用而在425nm附近的特征吸收带。但是,在某些化合物的X射线分析中,