J Nat Prod. 2018 Aug 24;81(8):1721-1733. doi: 10.1021/acs.jnatprod.7b01074. Epub 2018 Aug 14.
A hyphenated NMR technique (analytical HPLC with a DAD connected to MS, SPE, and NMR) has proven effective for the full structural analysis and identification of minor natural products in complex mixtures. Application of this hyphenated technique to the CHCl-soluble fraction of Rhododendron latoucheae led to the identification of 15 new minor ursane-type 28-nortriterpenoids (1-15). Compounds 1 and 12 inhibited HSV-1 with IC values of 6.4 and 0.4 μM, respectively.
一种组合的 NMR 技术(分析型 HPLC 与 DAD 相连,再与 MS、SPE 和 NMR 相连)已被证明对复杂混合物中微量天然产物的全结构分析和鉴定非常有效。将这种组合技术应用于马缨杜鹃 CHCl 可溶部分,鉴定出 15 种新的微量五环三萜 28-降三萜(1-15)。化合物 1 和 12 对 HSV-1 的抑制作用的 IC 值分别为 6.4 和 0.4 μM。