Selenium-Sulfur analogs. <b>6</b>
. Selenoisosteres of levamisole
作者:Gerald S. Jones、Robert N. Hanson、Michael A. Davis
DOI:10.1002/jhet.5570200307
日期:1983.5
by selenazole. The physiochemical properties and infrared spectra of the sulfur- and selenium-containing analogs were very similar. Differentiation was mostapparent in the nuclear magnetic resonance spectra where the α- and β-protons of the selenienyl compounds were shifted downfield relative to those of the corresponding thienyl compounds. With deuterated thiofluoroacetic acid as the solvent, a more
通过苯环被噻吩基和硒烯基部分取代以及噻唑基团被亚硒唑取代,制备了一系列三个新的左旋咪唑等排体。含硫和硒类似物的理化性质和红外光谱非常相似。区别在核磁共振谱中最为明显,在该光谱中,硒烯基化合物的α和质子相对于相应的噻吩基化合物的质子向场下移。用氘代硫代氟乙酸作为溶剂,与化合物16相比,观察到化合物17和18的硒烯基环的α-质子交换更快。