Synthesis and identification of a novel derivative of salidroside as a selective, competitive inhibitor of monoamine oxidase B with enhanced neuroprotective properties
作者:Zelin Yang、Xin Huang、Wenfang Lai、Yuheng Tang、Junjie Liu、Yingzheng Wang、Kedan Chu、John Brown、Guizhu Hong
DOI:10.1016/j.ejmech.2020.112935
日期:2021.1
would bind strongly with monoamineoxidase (MAO) B by occupying its entrance and substrate cavities, and by interacting with the inter-cavity gating residue Ile199 and Tyr435 of the substrate cavity. Enzymatic studies confirmed that pOBz competitively inhibited the activity of purified human MAO-B (Ki = 0.041 μM versus Ki = 0.92 μM for salidroside), and pOBz was highly selective for MAO-B over MAO-A.
One new δ-valerolactone (1) and one new natural phenolic glycoside 2, together with four known compounds 3–6, were isolated from the fruits of Ligustrum lucidum. Their structures were elucidated on the basis of spectral data. The chemical transformation from 2 to 3 was observed. The immunomodulatory activities of the compounds were also evaluated.