Description:
The herbs of Lamium takesimense Nakai (Lamiaceae) is used to treat spasmodic and inflammatory
disease. The four polar compounds, ecdysterone, isoacteoside, rutin and lamiuside C, were isolated and identified
from the BuOH fraction of the L. takesimense MeOH extract. HPLC quantification was performed on a Capcell
Pak C18 column (5 µm, 4.6 mm × 250 mm) with a gradient elution of H2O and 0.05% acetic acid in MeOH. The
HPLC method was validated in terms of linearity, sensitivity, stability, precision, and accuracy. The quantitative
level in plant material was determined as the following order: lamiuside C (4, 3.75 mg/g dry weight) > ecdysterone
(1, 1.93 mg/g) > isoacteoside (2, 1.32 mg/g) > rutin (3, 0.97 mg/g).
Keywords – Lamium takesimense Nakai, Lamiaceae, ecdysone, rutin, HPLC