School of Chinese Medicine, The Chinese University of Hong Kong, Hong Kong.
Phytother Res. 2010 Sep;24(9):1414-6. doi: 10.1002/ptr.3154.
A new protoberberine alkaloid, 3-hydroxy-2-methoxy-9,10-methylenedioxy-8-oxo-protoberberine, along with three known compounds, was isolated from Rhizoma Coptidis. The new compound displayed weak antispasmodic activity against acetylcholine-induced contraction in isolated guinea-pig ileum with an IC50 of 83.7 microm.
从黄连根茎中分离得到一个新的原小檗碱生物碱,3-羟基-2-甲氧基-9,10-亚甲二氧基-8-氧代原小檗碱,以及三个已知化合物。该新化合物对乙酰胆碱诱导的离体豚鼠回肠收缩显示出较弱的抗痉挛活性,IC50 为 83.7 微米。