The purification of the MeOH extract from Impatiens balsamina by repeated column chromatography led to the isolation of one new tetrahydronaphthalene (1), together with eleven known compounds (2 – 12). The structure of the new compound (1) was determined by spectral data analysis (1H and 13C-NMR, 1H-1H COSY, HSQC, HMBC, NOESY, and HR-ESI-MS). Isolated compounds (1 – 12) were evaluated for their inhibitory effects on NO production in LPS-activated murine microglial BV-2 cells and their effects on NGF secretion from C6 glioma cells. Compounds 3, 7, and 10 reduced NO levels in LPS-activated murine microglial cells with IC50 values of 26.89, 25.59, and 44.21 µM, respectively. Compounds 1, 5, and 9 upregulated NGF secretion to 153.09 ± 4.66, 156.88 ± 8.86, and 157.34 ± 3.30%, respectively.
Balsaminaceae ; Chromatography ; Glioma ; Impatiens ; Inhibitory Concentration 50 ; Nerve Growth Factor ; Neuroprotective Agents ; Statistics as Topic

OBJECTIVETo study the chemical constituents from the rhizome of Impatiens pritzellii var. hupehensis.

METHODThe rhizome were extracted with methanol, isolated and purified by column chromatography on silica gel. All the compounds were identified on the basis of spectral analysis (including IR, MS, NMR) and physico-chemical characters.

RESULTFive compounds were identified as a-spinasterol (I), alpha-spinasteryl-7, 22-dien-3-O-beta-D-glucopyranoside (II), stigmast-7, 22-dien-3-one (III), stearic acid (IV), hentriantane (V).

CONCLUSIONCompound I is isolated from this plant for the first time, Compound II, III, IV, V are isolated from genus Balsaminaceae for the first time.

Impatiens ; chemistry ; Plants, Medicinal ; chemistry ; Rhizome ; chemistry ; Stearic Acids ; chemistry ; isolation & purification ; Stigmasterol ; analogs & derivatives ; chemistry ; isolation & purification