To study the chemical constituents of Stenoloma chusana.The compounds were isolated and purified by recrystallization and various chromatographic techniques.The structures were elucidated by chemical evidence and spec...To study the chemical constituents of Stenoloma chusana.The compounds were isolated and purified by recrystallization and various chromatographic techniques.The structures were elucidated by chemical evidence and spectroscopi methods.five compounds were obtained and identified as(1)hexacosanoic acid,(2)3-hydroxy-heptacosanol,(3)phthalic acid bis-(2-ethylhexyl)ester,(4)β-sitosterol,(5)daucosterol.The five compounds were isolated from this genus for the first time.展开更多
A new method for the determination of toosendanin in the bark of Melia toosendan sieb.et zucc.by reversed-phase high performance liquid chromatography（RP-HPLC）with MeOH-H2O as the mobile phase at 215 nm of the uv-vi...A new method for the determination of toosendanin in the bark of Melia toosendan sieb.et zucc.by reversed-phase high performance liquid chromatography（RP-HPLC）with MeOH-H2O as the mobile phase at 215 nm of the uv-vis wavelength was investigated.A good seperatioin of toosendanin with matrix was obtained within 20 min by using Eclipse XDB-C8 column.The linear regression equation for peak area-toosendain concentration is A=20.818C-31,r=0.9997.展开更多
文摘To study the chemical constituents of Stenoloma chusana.The compounds were isolated and purified by recrystallization and various chromatographic techniques.The structures were elucidated by chemical evidence and spectroscopi methods.five compounds were obtained and identified as(1)hexacosanoic acid,(2)3-hydroxy-heptacosanol,(3)phthalic acid bis-(2-ethylhexyl)ester,(4)β-sitosterol,(5)daucosterol.The five compounds were isolated from this genus for the first time.
文摘A new method for the determination of toosendanin in the bark of Melia toosendan sieb.et zucc.by reversed-phase high performance liquid chromatography（RP-HPLC）with MeOH-H2O as the mobile phase at 215 nm of the uv-vis wavelength was investigated.A good seperatioin of toosendanin with matrix was obtained within 20 min by using Eclipse XDB-C8 column.The linear regression equation for peak area-toosendain concentration is A=20.818C-31,r=0.9997.
