Corybungines A−K: Isoquinoline alkaloids from Corydalis bungeana with dopamine D2 receptor activity
作者:Yang Han、Tao Hou、Zi-Hui Zhang、Yun-Hui Zhu、Jun-Xiang Cheng、Han Zhou、Ji-Xia Wang、Jia-Tao Feng、Yan-Fang Liu、Zhi-Mou Guo、Xin-Miao Liang
DOI:10.1016/j.phytochem.2022.113209
日期:2022.7
isoquinoline alkaloids corybungines A−K including a protoberberine-type alkaloid, an isoquinoline alkaloid with a unique 6-norprotoberberine skeleton, one 13,14-seco-protoberberine-type alkaloid, two 1a,14-seco-protoberberine-type alkaloids with a 4-(hydroxymethyl)phenoxy moiety and six aporphine alkaloids, together with seven known alkaloids, have been isolated from the whole herb extract of Corydalis bungeana
11 种未描述的异喹啉生物碱 corybungines A-K 包括一种原小檗碱型生物碱、一种具有独特 6-去甲小檗碱骨架的异喹啉生物碱、一种 13,14-seco-原小檗碱型生物碱、两种 1a,14-seco-原小檗碱型生物碱一个 4-(羟甲基)苯氧基部分和六种阿朴啡生物碱,以及七种已知的生物碱,已从Corydalis bungeana Turcz 的全草提取物中分离出来。基于对光谱数据和电子圆二色性 (ECD) 光谱的分析,阐明了它们的结构和绝对构型。( R )-stephanine 对多巴胺 D2 受体具有高拮抗活性,IC 50CHO-D2 细胞中的值为 0.85 ± 0.09 μM。此外,corybungines D、F、H、( R )-roemerine、( R )-vireakine 和 ( R )-tuduranine 显示出中度 D2 拮抗作用 (IC 50 5.20–26