OBJECTIVETo isolate and elucidate the constituents from rhizome of Arundina graminifolia.

METHODTheconstituents were extracted with 95% alcohol and isolated by chromatography on silica gel, Sephedax LH-20. The structures were determined by UV, IR, NMR and MS spectral analysis.

RESULTFive phenanthrene constituents were identified as 7-hydroxy-2, 4-dimethoxy-9, 10-dihydrophenanthrene( I ), 4, 7-dihydroxy-2-methoxy-9, 10-dihydrophenanthrene ( II ), 2, 7-dihydroxy-4-methoxy-9, 10-dihydrophenanthrene ( III ), 7-hydroxy-2-methoxyphenanthrene-1,4-dione ( IV ), 7-hydroxy-2-methoxy-9, 10-dihydrophenanthrene-1,4-dione (V), respectively.

CONCLUSIONAll compounds were isolated from rhizome of A. graminifolia for the first time.

Orchidaceae ; chemistry ; Phenanthrenes ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Rhizome ; chemistry

AIMTo study the chemical constituents of Cypripedium tibeticum.

METHODSCompounds were isolated by repeated silica gel chromatography and purified on Sephadex LH-20 and structures were determined by spectral analysis.

RESULTSCypritibetquinones A and B were isolated from the ethyl acetate residue and their structures were determined as 7-hydroxy-2-methoxy-1 4-phenanthraquinone (1) and 7-hydroxy-2, 10-dimethoxy-l1 4-phenanthraquinone (2), respectively, by extensive spectral analyses.

CONCLUSIONCypritibetquinones A and B are two new phenanthraquinones.

Anthraquinones ; chemistry ; isolation & purification ; Molecular Conformation ; Molecular Structure ; Orchidaceae ; chemistry ; Phenanthrenes ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Rhizome ; chemistry

OBJECTIVETo study the chemical constituents of effective part of Gastrodia elata.

METHODThe constituens were isolated by column chromatographies with silica gel and ODS, and identified by NMR, MS spectra.

RESULTSix compounds were isolated and identified.

CONCLUSIONThree compounds were isolated from this plant for the first time.

Gastrodia ; chemistry ; Molecular Structure ; Phenanthrenes ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Quinones ; chemistry ; isolation & purification ; Sitosterols ; chemistry ; isolation & purification ; Sulfides ; chemistry ; isolation & purification

OBJECTIVETo study the chemical constituents in roots of Peucedanum praeruptorum.

METHODThe constituents were isolated by column chromatography on silica gel and ODS, and identified by MS spectroscopic methods including NMR and.

RESULTSeven compounds, acetylatractylodinol (I), tanshinone II A (II), tanshinone I (III), cis-3', 4'-diisovalerylkhellactone(IV), cis-3',4'-disenecioylkhellactone(V), (+)praeruptorin B(VI), and beta-sitosterol(V), were isolated and identified.

CONCLUSIONCompounds I, II, III, IV were isolated from this plant for the first time.

Apiaceae ; chemistry ; Coumarins ; chemistry ; isolation & purification ; Diterpenes, Abietane ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Phenanthrenes ; chemistry ; isolation & purification ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry

The investigation on Salvia przewalskii Maxim was carried out to find the relationship of the constituents and their pharmacological activities. The isolation and purification were performed by various chromatographies such as silica gel, Sephadex LH-20, RP-C18 column chromatography, etc. Further investigation on the fraction of the 95% ethanol extract of Salvia przewalskii Maxim yielded przewalskin Y-1 (1), anhydride of tanshinone-II A (2), sugiol (3), epicryptoacetalide (4), cryptoacetalide (5), arucadiol (6), 1-dehydromiltirone (7), miltirone (8), cryptotanshinone (9), tanshinone II A (10) and isotanshinone-I (11). Their structures were elucidated by the spectral analysis such as NMR (Nuclear Magnetic Resonance) and MS (Mass Spectrometry). Compound 1 is a new compound. Compounds 4 and 5 are mirror isomers (1 : 3). Compounds 4, 5, 6, 8, 11 were isolated from Salvia przewalskii Maxim for the first time.
Diterpenes ; chemistry ; isolation & purification ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Molecular Structure ; Phenanthrenes ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Salvia ; chemistry

OBJECTIVETo investigate the feasibility of extracting the fat-soluble and the water-solubility substances from Salviae Miltiorrhizae with O/W Microemulsion.

METHODWith the yield of Tanshinone IIA and Salvianolic acid B as index, compere with efficiency of extracting Salviae Miltiorrhizae by suing the different media (water, alcohol and microemulsion), using different extraction methods (heat, microwave, ultrasonic), using different formulations of O/W microemulsion.

RESULTThe extracting yield of Tanshinone IIA and Salvianolic acid B are more than 70% by using microemulsion at mean time. It is good of the abilities of extraction of liposolubility compounds such as the Tanshinone IIA by the microemulsion. The formulations of microemulsion have remarkable effect for extracting Salviae Miltiorrhizae.

CONCLUSIONIt is feasibiale that extracted Salviae Miltiorrhizae by using O/W microemulsion as a solvents.

Benzofurans ; chemistry ; isolation & purification ; Diterpenes, Abietane ; Drugs, Chinese Herbal ; chemistry ; Emulsions ; chemistry ; Oils ; chemistry ; Phenanthrenes ; chemistry ; isolation & purification ; Reproducibility of Results ; Salvia miltiorrhiza ; chemistry ; Water ; chemistry

Geobiontic type medicinal plants subjected to Orchidaceae family are used as important traditional Chinese medicine. Scientists are paying more attentions to their chemical components and pharmacology recently. This paper reviewed their chemical components involved in phenanthrene, bibenzene, flavone, sterol, terpenes, alkoloids and pharmacology such as antibacterium, cytotoxic activity, antihyperliposis effects. All these information are beneficial to reveal the relative among these medicinal plants in Orchidaceae family and are helpful to develop new drugs.
Alkaloids ; chemistry ; isolation & purification ; Animals ; Anti-Bacterial Agents ; pharmacology ; Flavones ; chemistry ; isolation & purification ; Hypolipidemic Agents ; pharmacology ; Molecular Structure ; Orchidaceae ; chemistry ; classification ; Phenanthrenes ; chemistry ; isolation & purification ; Plants, Medicinal

OBJECTIVETo study the chemical constituents in bark of Larix olgensis var. koreana.

METHODThe compounds were isolated with silica gel column chromatography and their structures were elucidated on the basis of spectral analysis (IR, EI-MS, 1H-NMR, 13C-NMR).

RESULTEight compounds were isolated and identified as isopimaric acid (I), beta-sitosterol (II), 24R,5alpha-stigmast-3,6-dione (III), larixol (IV), ferulic acid (V), lariciresinol (VI), secroisolariciresinol (VII) and isolariciresinol (VIII).

CONCLUSIONAll the compounds were isolated from this plant for the first time.

Carboxylic Acids ; chemistry ; isolation & purification ; Furans ; chemistry ; isolation & purification ; Larix ; chemistry ; Lignans ; chemistry ; isolation & purification ; Phenanthrenes ; chemistry ; isolation & purification ; Plant Bark ; chemistry ; Plants, Medicinal ; chemistry ; Sitosterols ; chemistry ; isolation & purification

AIMTo present a theory bases for Chinese traditional medicine extraction process.

METHODSA kinetic equation for Chinese traditional medicine extraction process was presented based on Fick's second law of diffusion. Experiments for extracting tanshinone from Salvia miltiorrhiza Bge with ethanol under different particle sizes and temperatures were studied. In addition, the data of extraction process of three kinds of herbs, including Glycyrrhiza uralensis Fisch, Schisandra chinesis and Ophiopogon japonicus (Thunb.) Ker-Gawl were introduced to evaluate the kinetic equation.

RESULTSThe kinetic of Chinese traditional medicine extraction process agreed with the first-order rate equation. Experiment data of active components extracted from the herbs above could perfectly match with the kinetic equation. The rate-determining step for extracting tanshinone from Salvia miltiorrhiza Bge was the diffusion of tanshinone through the herb particles. The apparent activation energy for tanshinone diffusion process was 20.26 kJ.mol-1.

CONCLUSIONThe relation between the concentration of active component and extraction time, size of herb particles and temperature could be got from this kinetic equation. The extraction process of other herbs besides the above could be described by this equation.

Diterpenes, Abietane ; Drugs, Chinese Herbal ; isolation & purification ; Glycyrrhiza uralensis ; chemistry ; Kinetics ; Mathematics ; Models, Chemical ; Phenanthrenes ; isolation & purification ; Plants, Medicinal ; chemistry ; Salvia miltiorrhiza ; chemistry ; Schisandra ; chemistry ; Technology, Pharmaceutical ; methods

OBJECTIVETo study the chemical constituents of Prunella vulgaris.

METHODTo separate the constituents of P. vulgaris by using various kinds of chromatography and identify their structures on the basis of spectral analysis.

RESULTSeven compounds were isolated from the spikes of P. vulgaris. Their structures were established as autantiamide acetate (1), rhein (2), tanshinone I (3), danshensu (4), stigmast-7, 22-dien-3-one (5), 3, 4, alpha-trihydroxy-methyl phenylpropionate (6), butyl rosmarinate (7).

CONCLUSIONCompounds 1-4 were isolated from this genus for the first time.

Amides ; chemistry ; isolation & purification ; Anthraquinones ; chemistry ; isolation & purification ; Chromatography, High Pressure Liquid ; Diterpenes, Abietane ; Flowers ; chemistry ; Lactates ; chemistry ; isolation & purification ; Magnetic Resonance Spectroscopy ; Phenanthrenes ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Prunella ; chemistry