A full analysis of the 1H NMR spectra of angelicin (2H-furo[2,3-h]-l-benzopyran-2-one) and of 25 of its mono-, di- and tri-methyl analogues, allows the assignments of all the peaks in the spectra to be made with reasonable certainty. Coupling constants have also been utilized in order to provide a better fit of the data.
通过对白芨素(2H-
呋喃[2,3-h]-l-苯并
吡喃-2-酮)及其25种单甲基、二甲基和三甲基类似物的1H NMR光谱进行全面分析,可以合理确定光谱中所有峰的归属。此外,还利用偶合常数来更好地拟合数据。