Related Experiment Video
Updated: Apr 23, 2026

Analysis of Raw and Processed Cyperi Rhizoma Samples Using Liquid Chromatography-Tandem Mass Spectrometry in Rats with Primary Dysmenorrhea
Published on: December 23, 2022
Anti-inflammatory amide alkaloids from the stems of Clausena emarginata
Hong-Min Xia1, Chuang-Jun Li, Jing-Zhi Yang
1a State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China.
Abstract:
Two new amide alkaloids, clauemaramide A (1) and clauemaramide B (2), and three known analogs were isolated from the stems of Clausena emarginata. Their structures were determined on the basis of spectroscopic analyses. The absolute configurations of 1 and 2 were confirmed by CD spectroscopy. Compound 3 showed moderate inhibitory effects on LPS-induced NO production (IC₅₉ value = 4.9 μM).
Related Concept Videos
Drugs for Treatment of Ulcerative Colitis in IBD
Drugs Affecting GI Tract Motility: Opioids as Antidiarrheal Agents
Opioids, widely used antidiarrheal agents, mitigate diarrhea by slowing down...
Drugs for Treatment of Constipation-Predominant IBS
CNS Stimulants: Cocaine, Amphetamines and Cannabinoids
Drugs for Treatment of Crohn's Disease in IBD Using Immunomodulatory Agents
Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...