Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Filtrar
Añadir filtros








Intervalo de año
1.
China Journal of Chinese Materia Medica ; (24): 2203-2206, 2011.
Artículo en Chino | WPRIM | ID: wpr-283227

RESUMEN

<p><b>OBJECTIVE</b>To study the chemical constituents of aerial part of Rabdosia serra.</p><p><b>METHOD</b>The compounds were isolated by extraction, coloum chromatography over silica gel and ODS, and preparative HPLC. Their structures were identified by various spectroscopic methods including MS, IR, 1D and 2D NMR data.</p><p><b>RESULT</b>Six compounds were isolated from R. serra and were characterized as ent-1alpha, 7alpha, 14beta, 20-tetrahydroxy-11, 16-kauradien-15-one (1), kamebakaurin (2), dihydrokamebakaurin (3), rabdoinflexin A (4), daucosterol( 5), and beta-sitosterol (6).</p><p><b>CONCLUSION</b>Compound 1 is a new compound, and coumpound 3 was obtained from this plant for the first time.</p>


Asunto(s)
Isodon , Química
2.
China Journal of Chinese Materia Medica ; (24): 620-622, 2010.
Artículo en Chino | WPRIM | ID: wpr-281753

RESUMEN

<p><b>OBJECTIVE</b>To develop an HPLC for determination of aglycone of momordicoside L in Momordica charantia.</p><p><b>METHOD</b>A Kromasil C18 (4.6 mm x 150 mm, 5 microm) column was used. The mobile phase was acetonitrile-H2O (64:36), the flow rate was 1.0 mL x min(-1) and the UV detection wavelength was set 203 nm.</p><p><b>RESULT</b>The calibration curves were linear from of 0.025 microg to 1 microg (r =0.9911), the contents of aglycone of momordicoside L in Shandong, Henan, Hebei, Jiangxi are 0.211, 0.033, 0.013, 0.007 mg x g(-1), respectively.</p><p><b>CONCLUSION</b>The method is simple and reliable for determination of aglycone of momordicoside L in M. charantia.</p>


Asunto(s)
Calibración , Cromatografía Líquida de Alta Presión , Métodos , Momordica charantia , Química , Saponinas
3.
Chinese Traditional and Herbal Drugs ; (24)1994.
Artículo en Chino | WPRIM | ID: wpr-579432

RESUMEN

Objective To study new active constituents in the mature fruits of Momordica charantia.Methods M.charantia was extracted by alcohol and purified by D-101 macroporous adsorptive resin.The isolation and purification were carried out by silica gel and semiprepared HPLC,the compounds were identified and elucidated by spectral and chemical methods.Results Eight compounds were obtained and identified as charantadiol A(5?,19-epoxycucurbita-6,23(E),25(26)-triene-3?,19(R)-diol,Ⅰ),(+)-eduesmin(Ⅱ),bluemenol A(Ⅲ),karatavilagenin D(Ⅳ),5?,19-epoxycucurbita-6,23-diene-3?-19,25-triol(Ⅴ),5,19-epoxy-5?-cucurbita-6,23(E)-diene3?,25-diol(Ⅵ),3?,7?-trihydroxy-cucurbita-5,23(E)-diene-19-al(Ⅶ) and ?-sitosterol(Ⅷ).Conclusion Compound Ⅰ is a novel one,named charantadiol A.Compounds Ⅱ and Ⅲ are obtained from M.charantia for the first time.

4.
Chinese Traditional and Herbal Drugs ; (24)1994.
Artículo en Chino | WPRIM | ID: wpr-577826

RESUMEN

Objective To compare the pharmacodynamics of common Bletilla striata powder(80 and 200 meshes) with ultra-fine powder of B.striata on experimental gastric ulcer in rats and to clarify how much the dose of B.striata was decreased after superfine comminution.Methods The models of gastric ulcer were set up by anhydrous alcohol and acetic acid to measure the gastric ulcer area and count out the inhibitory rate;The tissue slice of gastric ulcer cicatrix was got far HE staining.Based on the viewpoint of pathology the morbid state was observed.Results B.striata powder could decrease the gastric ulcer area significantly,and the groups of ultra-fine powder were advantaged to the others.Conclusion After superfine comminution,the potency of B.striata can be improved with its dose reducing.It is good for mo-dernization of making dosage forms.

SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA