hmbc

Methods The NMR techniques of HMQC and HMBC were used for detecting tomerizine dihydrochloride .

方法应用HMQC、HMBC等二维核磁共振技术进行测定。

Its structure was determined by comprehensive spectroscopic methods , especially2D NMR ( HMQC , HMBC ) .

该化合物的结构通过广泛的波谱方法得到确证，尤其是2DNMR（HMQC，HMBC）。

Total assignment of 1H and 13 C NMR spectral sigals of new drug Tegaserod has been analyzed by 2D NMR techniques ( HHCOSY , HMQC and HMBC ) . The correlations of protons and carbons were given .

对治疗消化道疾病的新药替加色罗的核磁共振谱进行了分析。结合HHCOSY、HMQC、HMBC等二维核磁共振技术对其1HNMR及13cNMR谱的信号进行了全归属。

Method : Four compounds were isolated and purified by extraction and column chromatography on silica gel . The chemical structures were determined on the basis of physical-chemical evidence and extensive spectral analysis ( HR-EIMS , EIMS , 13C-NMR , 1H-NMR , DEPT , 1H-1H-COSY , HMQC and HMBC ) .

方法：用萃取、色谱等技术进行分离得到4个化合物，根据理化性质和用HREIMS，EIMS，13cNMR，1HNMR，DEPT，1H1Hcosy，HMQC，HMBC谱鉴定其化学结构。