Preparation of New Nitrogen-Bridged Heterocycles. 58. Syntheses and Intramolecular Arene-.PI. Interactions of 3-(Allylthio)- and 3-(Propargylthio)thieno[3,4-b]indolizine Derivatives
作者:Akikazu Kakehi、Hiroyuki Suga、Yoshikazu Kaneko、Tsuneo Fujii、Nobuaki Tanaka
DOI:10.1248/cpb.53.1430
日期:——
Various thieno indolizine derivatives having an allylthio or propargylthio group at the 3-position were prepared and their intramolecular arene-pi interactions were investigated. Their 1H-NMR spectra showed significant low-field shifts (delta 0.10-0.34 ppm) to the 5-proton on the thieno indolizine ring, and this effect was the reverse to that observed in 3-(arylmethylthio)thieno indolizines. However, their
制备了各种在3-位具有烯丙基硫基或炔丙基硫基的硫杂吲哚嗪衍生物,并研究了它们的分子内芳烃-pi相互作用。他们的1H-NMR谱图显示在噻诺吲哚嗪环上向5质子的低场移位(δ0.10-0.34 ppm),并且这种效应与3-(芳基甲硫基)硫代吲哚吲哚中观察到的相反。然而,它们的紫外光谱由于在430 nm附近有芳烃-π相互作用而表现出特征吸收带,这些值几乎与3-芳基甲硫基衍生物的芳烃-芳烃相互作用的吸收谱相似,尽管它们的消光系数因3-取代基。此外,