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13C-NMR

13C-NMR

13C-NMR

13C-NMR

1

Aim : nuclear magnetic resonance spectrum of calycosin was studied , and its chemical shifts of 13C NMR were attributed .

目的：研究了毛蕊异黄酮的核磁共振波谱学，并对其 13CNMR 进行归属。

3

The structures of the new intermediates and target compounds are confirmed by 1H NMR, 13C NMR, IR, and MS spectra .

所有的目标化合物和一些中间体化合物的结构都经过 1HNMR 、13CNMR 、IR 及 MS 得到了确认。

5

The structures of the intermediates and the target compound were confirmed by MS, 1H NMR and 13C NMR spectra in our experiments.

关键中间体及最终化合物的结构经质谱、核磁共振氢谱及碳谱得到确证。

6

Results The structure of the target molecule was identified by 1H NMR, 13C NMR and element analysis .

结果最终产物由核磁共振谱和元素分析进行结构鉴定。

7

It can aid people to elucidate the 13C-NMR spectra of steroidal natural products effectively .

能有效地辅助人们对甾体类天然产物 ~（13 ）C-NMR 图谱的解析。

8

oxidized coal ; composition and structure ; 13C-NMR; physiological activation;

腐植酸；氧化煤；组成和结构；13C-NMR ；生理活性；

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