Related Experiment Video
Updated: Nov 4, 2025

Author Spotlight: Discovering New Alkaloids in Plants with Advanced Mass Spectrometry Techniques
Published on: March 8, 2024
Two new monoterpenoid indole alkaloids from Mappianthus iodoides stems
Lan Zhou1,2, Pian-Chou Gongpan1, Qing-Fei Fan1,2
1CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, China.
Abstract:
Two previously unreported monoterpenoid indole alkaloids, 19(20)E-5-carboxymethylvallesiachotamine (1) and 19(20)Z-5-carboxymethylvallesiachotamine (2), along with five known indole alkaloids (3-7) were isolated from Mappianthus iodoides stems. Their structures were characterized by extensive spectroscopic data. Among these isolates, compounds 1 and 2 were the two new Δ19(20) geometric isomers. The anti-inflammatory activities in vitro of all isolated compounds were evaluated using NO assay.[Formula: see text].
More Related Videos
07:30A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones
Published on: January 21, 2020
11:14Rapid High-throughput Species Identification of Botanical Material Using Direct Analysis in Real Time High Resolution Mass Spectrometry
Published on: October 2, 2016