Related Experiment Video
Updated: Jun 20, 2026
07:16
High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
Micromelosides A-D, four new coumarins from the stem bark of Micromelum falcatum
Xiongming Luo1, Shuhua Qi, Hao Yin
1Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
Magnetic Resonance in Chemistry : MRC
|September 22, 2009
Abstract:
Four new coumarins, micromelosides A-D, together with four known coumarins were isolated from the stem bark of Micromelum falcatum. The complete assignments of the 1H and 13C NMR chemical shifts for these new compounds were achieved by means of 1D and 2D NMR techniques, including 1H-1H COSY, HSQC, HMBC and NOE difference.