NMR spectroscopy

The intermediate was purified through extraction and crystallization and characterized by mass spectra, element analysis, Fourier transform infrared spectra and ~1H nuclear magnetic resonance spectroscopy, the result indicats that the intermediate of the reaction is 5-amino-naphthalene-1-carbamate (ANC) with a molecular weight of.

本文利用萃取、结晶等分离手段提纯出了该中间产物,并通过质谱、元素分析、红外光谱以及核磁共振谱等分析方法对其组成和结构进行了测定,结果表明该中间产物的分子量为216,组成为C12H12N2O2,结构为5-氨基-萘基-1-氨基甲酸甲酯。

1H NMR (nuclear magnetic resonance), 13 C NMR, distorsionless enhancement by polarization transter (DEPT) and a series of 2D NMR techniques, including heteronuclear multiple quantrum correlation (HMQC), heteronuclear multiple bond correlation (HMBC) and 1H-1H correlation spectrometry (COSY), were applied to assign all carbon and proton signals of the product.

以18β-甘草次酸为原料,合成了一种新的甘草次酸盐类衍生物——精氨酸甘草次酸,利用1HNMR、13CNMR、DEPT、1H-1HCOSY、HMQC、HMBC等1D和2DNMR技术对其碳和氢质子信号进行了全归属,并通过与两种原料化合物核磁共振谱数据的对比,揭示了该成盐反应的作用机制和产物的结构类型。

The ultraviolet spectrum,infrared spectrum,1D and 2D nuclear magnetic resonance (1H NMR,13 C NMR,1H-1H COSY,HMQC and HMBC) spectra and mass spectra of new drug lomerizine dihydrochloride were reported and interpreted.

对盐酸洛美利嗪的紫外光谱(UV)、红外光谱(IR)、一维及二维核磁共振谱(1HNMR、13CNMR、1H-1HCOSY、HMQC、HMBC)以及质谱(MS)进行了解析和报道,对其所有的NMR谱信号进行了归属,同时讨论了质谱的主要碎片离子的可能的裂解方式和红外特征吸收峰所对应的官能团的振动形式。

Data mining technique in the bank of nuclear magnetic resonance spectra;

数据挖掘技术在核磁共振谱谱图库中的应用

Theoretical Study on Nuclear Magnetic Resonance Spectra of TMS、Three-ring Compounds and Isoflavone Derivatives;

TMS、三元环体系和异黄酮衍生物的核磁共振谱的理论研究

Structural Determination of Bicalutamide by IR,NMR and MS;

红外吸收光谱、核磁共振谱和质谱确证比卡鲁胺的结构

Ab Inito Study on δ 1~H NMR and δ 13~C NMR of Taxol and It′s Molecular Geometry;

紫杉醇的核磁共振谱及其分子几何构型的从头算研究

Theoretical Study on the NMR of Mycoepoxydiene;

Mycoepoxydiene核磁共振谱的理论研究

Its molecular structure was characterized by MS and various NMR spectra.

从分离筛选的海洋放线菌N331的发酵液中分离、纯化得到一种无色结晶抗菌化合物SR-B,通过对其质谱、多种核磁共振谱的结构信息进行分析,鉴定其分子结构。