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Updated: Apr 19, 2026

Author Spotlight: Discovering New Alkaloids in Plants with Advanced Mass Spectrometry Techniques
Published on: March 8, 2024
Six new alkaloids from Melodinus henryi
Ke Ma1, Jun-Song Wang1, Jun Luo1
1State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China.
Abstract:
A total of six new alkaloids, melodinhenines A-F (1-6), were isolated from Melodinus henryi. Melodinhenines A and B are new eburnan-vindolinine-type bisindole alkaloids and melodinhenines C-F are new quinolinic melodinus alkaloids. Their structures were elucidated through extensive spectroscopic methods including 2D NMR and HRESIMS analyses. The absolute configuration of 1 and 2 was determined using ECD exciton chirality method. To the best of our knowledge, this is the first report on the determination of the absolute configuration of eburnan-vindolinine-type bisindole alkaloid using this method.
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