Yanru Li

TL;DR: Twenty-two new lignans and neolignans (1-22), together with 14 known analogues, have been isolated from an ethanolic extract of the stem (with skin removed) of Sinocalamus affinis by spectroscopic and chemical methods.

TL;DR: Sixteen new neolignans and lignans (1-16), together with 12 known analogues, have been isolated from an ethanol extract of the bark of Machilus robusta, and the known compounds (-)-pinoresinol and (+)-lyoniresinol were active against serum deprivation induced PC12 cell damage.

TL;DR: Seventeen new lathyrane diterpenoids (1-17) and two known analogues have been isolated from an ethanolic extract of Euphorbia micractina roots and showed significant vascular-relaxing activities against phenylephrine-induced vasoconstriction.

TL;DR: Six new glycosidic constituents (1–6) have been isolated from the bark of Machilus robusta, together with 10 known analogs, and structures were determined by spectroscopic and chemical methods.

TL;DR: Eighteen lignans were isolated from an ethanol extract of Machilus robusta by a combination of various chromatographic techniques including column chromatography over silica gel, Sephadex LH-20 and reversed-phase HPLC.