The conformations and relative configurations of four epoxides of α-amido cyclohexenes have been determined by the combination of molecular modeling and NMR decoupling technique, cis-Epoxides were deduced from the vi...The conformations and relative configurations of four epoxides of α-amido cyclohexenes have been determined by the combination of molecular modeling and NMR decoupling technique, cis-Epoxides were deduced from the vicinal coupling constants calculated from the torsional angles H（1）-C（1）-C（2）-H（2） in modeling models by means of Karplus equation and observed by decoupling technique. The crystal structure of cis-4-nitro-N-（7-oxabicyclo[4.1.0]hept-2-yl）benzamide further confirms this assignment.展开更多
文摘The conformations and relative configurations of four epoxides of α-amido cyclohexenes have been determined by the combination of molecular modeling and NMR decoupling technique, cis-Epoxides were deduced from the vicinal coupling constants calculated from the torsional angles H（1）-C（1）-C（2）-H（2） in modeling models by means of Karplus equation and observed by decoupling technique. The crystal structure of cis-4-nitro-N-（7-oxabicyclo[4.1.0]hept-2-yl）benzamide further confirms this assignment.
