Thiazole analogs of isoflavolignans react with amidines to recyclize into pyrimidine derivatives, the PMR spectra of which were examined. Effects connected to the formation and strength of an intramolecular H-bond were studied.
Modified analogs of isoflavolignans are prepared by annelation of dioxole, dioxane, and dioxepan fragments to 3-thiazolyl-7,8-dihydroxychromones.
——
作者:V. P. Khilya、A. V. Turov、T. M. Tkachuk、L. I. Shevchuk
DOI:10.1023/a:1013702014136
日期:——
Thiazole analogs of isoflavolignans react with amidines to recyclize into pyrimidine derivatives, the PMR spectra of which were examined. Effects connected to the formation and strength of an intramolecular H-bond were studied.