三聚体
化学
弗拉万
圆二色性
质谱法
立体化学
色谱法
有机化学
二聚体
作者
Ayaka Tsuchiya,Maki Suzuki,Ryotaro Ito,Irmanida Batubara,Kosei Yamauchi,Tohru Mitsunaga
出处
期刊:Fitoterapia
[Elsevier]
日期:2024-01-01
卷期号:172: 105757-105757
标识
DOI:10.1016/j.fitote.2023.105757
摘要
Dragon's blood is a red resin obtained from different plants and is considered highly efficacious and used in medicine owing its wound healing function. Two new compounds (7 and 8) were isolated from the dragon's blood of Daemonorops draco fruits, along with eight known compounds (1–6, 9, and 10). Their structures, including their absolute configurations, were elucidated by nuclear magnetic resonance (NMR), matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and electronic circular dichroism (ECD) analysis. According to the spectroscopic data, 8 was determined to be a quinone methide derivative of flavan and 7 was deduced to be a flavan trimer. All compounds were evaluated for their anti-osteoclastogenesis activity, compound 1 and 7 exhibited anti-osteoclastogenesis activity with IC50 values of 31.3 and 36.8 μM, respectively.
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