SYNTHESES AND SUBSTITUENT EFFECTS ON 4-^(13)C-NMR OF BIOACTIVE 4-SUBSTITUTED-2,6,7-TRIOXA-1-PHOSPHABICYCLO2.2.2OCTANE-1-OXIDES

摘要

Ten 4-substituted bicyclic phosphates were synthesized and their 13C-NMR werealso determined.A good relationship was observed between 4-13C chemical shift and Taft σ_X induc-tive paramenters.Substituent effects on 3J_P-C coupling constant were studied.