Antineurodegenerative Labdane Diterpenoid Glycosides from the Twigs of <i>Pinus koraiensis</i>
作者:Kyoung Jin Park、Zahra Khan、Lalita Subedi、Sun Yeou Kim、Kang Ro Lee
DOI:10.1021/acs.jnatprod.9b01158
日期:2020.6.26
Eleven new labdane-type diterpenoid glycosides, koraiensides A–K (1–11), together with two known analogues were isolated from the twigs of Pinus koraiensis. Their structures were elucidated via NMR, HRMS, and ECD data, DP4+ statistical analysis, and hydrolysis. The metabolites were tested for induction of nerve growth factor in C6 glioma cells to evaluate their potential neuroprotective activity. The
11个新半日花烷型双萜类糖苷,koraiensides A-K(1 - 11),加上两个已知类似物从的细枝分离红松。它们的结构通过 NMR、HRMS 和 ECD 数据、DP4+ 统计分析和水解得到阐明。测试代谢物在 C6 神经胶质瘤细胞中诱导神经生长因子,以评估其潜在的神经保护活性。测量这些化合物在脂多糖 (LPS) 激活的小鼠小胶质细胞 BV2 细胞中产生的一氧化氮水平,以评估它们的抗神经炎症活性。化合物10和13显示出来自 C6 神经胶质瘤细胞的 NGF 分泌诱导作用(分别为 162.3 ± 13.9% 和 162.7 ± 6.9%)。化合物图6显示24.1μM的IC 50值,暗示NO产生的显着抑制。