OBJECTIVETo investigate the chemical constituents from Hedyotis diffusa.

METHODThe compounds were isolated and purified by various chromatographic techniques and identified by their physicochemical properties and spectral data.

RESULTEight compounds had been reported in last paper, and this time eight more compounds were isolated and identified as 6-hydroxystigmasta-4,22-dien-3-one (1), 3-hydroxystigmasta-4,22-dien-7-one (2), 2-hydroxy-3-methylanthraquinone (3), 2,6-dihydroxy-3-methyl-4-methoxyanthraquinone (4), iso-scutellarein (5), isoetin (6), aesculetin (7), gypsogenic acid (8).

CONCLUSIONCompounds 1-3, 5-8 were obtained from the genus Hedyotis for the first time.

OBJECTIVETo study the chemical constituents of Usnea longissima.

METHODThe compounds were isolated and purified by the methods of solvent extraction and chromatographic technique, and their structures were identified on the basis of the analysis of spectral data or comparison with those of authentic sample.

RESULTThirteen compounds were obtained and identified as ethyl hematommate (1), friedelin (2), beta-amyrin (3), beta-sitosterol (4), methyl-2,4-dihydroxy-3,6-dimethylbenzoate (5), barbatinic acid (6), zeorin (7), ethyl orsellinate (8), 3beta-hydroxy-glutin-5-ene (9), oleanolic acid (10), (+)-usnic acid (11), methylorsellinate (12), and 4-methyl-2,6-dihydroxy-benzaldehyde (13).

CONCLUSIONCompounds 2, 3, 5, and 8-10 were isolated from this genus for the first time, and compounds 1,4 were obtained from this plant for the first time.

Thirteen compounds were isolated from the leaves of Rhododendron rubiginosum var. rubiginosum by various chromatographic techniques. On the basis of spectroscopic data, their structures were elucidated as 3,9-dihydroxy-megastigma-5-ene (1), 3 beta-hydroxy-5alpha ,6 alpha-epoxy-7-megastigmen-9-one (2), loliolide (3), ursolic acid(4), 2 alpha, 3 beta-dihydroxy-urs-12-en-28-oic acid (5), 2 alpha, 3 beta,23-trihydroxy-urs-12-en-28-oic acid (6), 7,9-dimethoxyrhododendrol (7), 7-methoxyrhododendrol (8), zingerone (9), isofraxidin (10), scopoletin (11), (+)-pinoresinol (12) and 3'-O-demethylepipinorisenol (13). All compounds were isolated from this plant for the first time, and compounds 1-3, 7-9, and 11-13 were isolated from the genus Rhododendron for the first time.
Organic Chemicals ; analysis ; chemistry ; Plant Leaves ; chemistry ; Rhododendron ; chemistry

OBJECTIVETo study the chemical constituents from the roots of Linum usitatissimum.

METHODThe compounds were isolated and purified by silica gel column chromatography, their structures were elucidated by physico-chemical properties and spectroscopic data.

RESULTTen compounds were isolated and identified as vanillic acid (1), syringic acid (2), xanthine (3), vitexin (4), isovanillin (5), (E)-3,3'-dimethoxy-4,4'-dihydroxystilbene (6), tachioside (7), beta-sitosterol and stigmasterol (8 and 9) mixture, berberine (10).

CONCLUSIONCompounds 1-3, 5-7, 10 were isolated from L. usitatissimum for the first time.

OBJECTIVETo isolate and elucidate the chemical constituents of the fruits of Acanthopanax sessiliflorus.

METHODIsolation and purification were carried out on the column chromatography of silica gel and Sephadex LH-20. Their structures were elucidated on basis of physicochemical properties and spectral data.

RESULTNine compounds were isolated and identified as oleanolic acid-3-O-6'-O-methyl-beta-D-glucuronopyranoside (1), 22-alpha-hydroxychiisanogenin (2), oleanolic acid-3-O-beta-D-glucuronopyranoside (3), oleanolic acid-3-O-beta-D-glucopyranoside (4), oleanolic acid (5), chiisanogenin (6), (-)-sesamin (7), daucosterol (8), beta-sitosterol (9).

CONCLUSIONCompound 1 is obtained from the genus Acanthopanax genus for the first time. Compounds 2-5 are isolated from this plant for the first time.

Thirteen compounds were isolated from the flowers of Chrysanthemum indicum by chromatographic techniques. Their structures were elucidated by spectroscopic methods as acacetin-7-0-beta-D-glucopyranoside (1), luteolin (2), luteolin-7-O-beta-D-glucopyranoside (3), acaciin (4), acacetin 7-0-(6"-0-alpha-L-rhamnopyranosyl)-beta-sophoroside (5), 3-0-caffeoylquinic acid (6), syringaresinol 0-beta-D-glucopyranoside (7), 5,7-dihydroxychromone (8), uracil (9), p-hydroxybenzoic acid (10), 4-0-beta-D-glucopyranosyloxybenzoic acid (11), boscialin (12), blumenol A (13). Compounds 5, 7, 8, 11-13 were isolated from C. indicum for the first time.
Chrysanthemum ; chemistry ; Flowers ; chemistry ; Organic Chemicals ; analysis ; isolation & purification

OBJECTIVETo study the chemical constituents from the stems of Cudrania tricuspidata.

METHODThe chemical constituents from the ethanol extract of C. tricuspidata were isolated and purified by silica gel, Sephadex LH-20 column chromatographic methods. Their structures were identified on the basis of spectroscopic data and physico-chemical properties.

RESULTThirteen compounds were isolated and identified as butyrospermyl acetate (1), glutinol (2), taraxerone (3), quercetin (4), kaempferol (5), isorhamnetin (6), orobol (7), 3'-O-methyorobol (8), taxifolin (9), naringenin (10), steppogenin (11), 1,3,6,7-tetrahydroxyx-anthone (12), 5,7-dihydroxy chromone (13).

CONCLUSIONCompounds 1-3, 6, 13 were isolated from this genus for the first time, while compound 12 was isolated from this plant for the first time and we firstly reported the terpenoids from the genus Cudrania.

Chemical constituents of a new species of Spongia sponge collected from Sanya bay in Hainan province, were analyzed. Nine secondary metabolites 1-9 were isolated. On the basis of their spectroscopic data and chemical degradation, their chemical structures were determined as palmitoyl-heptacosane-1, 3, 5-triol (1), stigmast-4-en-3beta, 6beta-diol (2),2,3-dihydroxypropanyl hentetracosanate (3), sitosterol (4), thymine (5), gorgosterol (6), batyl alcohol (7), uracil (8) and thymidine (9). Palmitoyl-heptacosane-1, 3, 5-triol (1) is a new compound.
Animals ; Magnetic Resonance Spectroscopy ; Organic Chemicals ; analysis ; chemistry ; Porifera ; chemistry

OBJECTIVETo study the chemical constituents from the fruits of Ligustrum lucidum.

METHODThe chemical constituents from the ethanol extract of L. lucidum were isolated and purified by silica gel, Sephadex LH-20, ODS column chromatographic methods. Their structures were identified on the basis of spectroscopic data and physico-chemical properties.

RESULTTwenty compounds were isolated and identified as oleanolic acid (1), crategolic acid (2), acetyl oleanolic acid (3), lupeol (4), betulin (5), dammarenediol-II (6), 3beta-acetyl-20, 25-epoxydammarane-24alpha-ol (7), 25-epoxydammarane-3beta, 24alpha-diol (8), dammar-24-ene-3beta-acetyl-20S-ol) (9), 20S, 24R-dammarane-25-ene-24-hydroperoxy-3beta, 20-diol (10), fouquierol (11), oliganthas A (12), dammarenediol II 3-O-palmitate (13), ocotillol II 3-O-palmitate (14), (E) -25-hydroperoxydammar-23-ene-3beta,20-diol (15), verbascoside (16), cimidahurinine (17), 2-(3,4-dihydroxyphenyl)-ethyl-O-beta-D-glucopyranoside (18), osmanthuside H (19), 2-(3,4-dihydroxyphenyl) ethanol (20).

CONCLUSIONCompounds 4, 16,17, 19 were isolated from this plant for the first time, andcompounds 12-15 were isolated from this genus for the first time.

OBJECTIVETo study the chemical constituents of Sorbus tianschanica.

METHODThe compounds were isolated and purified by recrystallization and chromatography with silica gel and resin. Their structures were identified by physicochemical properties and spectral analysis.

RESULTSeven compounds were isolated from the EtOH extraction and six structures were identified as benzoic acid (1), benzyl-O-beta-D-glucopyranoside (2), ursolic acid (3), 2alpha-hydroxyursolic acid (4), hyperoside (5), quercetin-3-O-glucoside (6).

CONCLUSIONCompounds 1-5 were isolated from S. tianschanica for the first time.