No abstract available.
Ganglion Cysts ; Organic Chemicals

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.

Bio-based materials are new materials or chemicals with renewable biomass as raw materials such as grain, legume, straw, bamboo and wood powder. This class of materials includes bio-based polymer, biobased fiber, glycotechnology products, biobased rubber and plastics produced by biomass thermoplastic processing and basic biobased chemicals, for instance, bio-alcohols, organic acids, alkanes, and alkenes, obtained by bio-synthesis, bio-processing and bio-refinery. Owing to its environmental friendly and resource conservation, bio-based materials are becoming a new dominant industry taking the lead in the world scientific and technological innovation and economic development. An overview of bio-based materials development is reported in this special issue, and the industrial status and research progress of the following aspects, including biobased fiber, polyhydroxyalkanoates, biodegradable mulching film, bio-based polyamide, protein based biomedical materials, bio-based polyurethane, and modification and processing of poly(lactic acid), are introduced.
Biomass ; Biotechnology ; Organic Chemicals ; Plastics ; Polymers ; Rubber

PURPOSE: To compare the clinical results between the extensile lateral approach and sinus tarsi approach in the open reduction of the Sanders type II calcaneal fracture. MATERIALS AND METHODS: From July 2002 to Februry 2007, thirty two patients having thirty three calcaneal fractures of Sanders type II were managed with open reduction and internal fixation using the extensile lateral approach or sinus tarsi approach. The mean age of 19 patients using extensile lateral approach was 43.3 years. The mean age of 13 patients using sinus tarsi approach was 46.3 years. Clinical outcome, radiographic parameters, and postoperative complications were compared between both groups. RESULTS: There was no difference between two groups associated with patients demographs. The mean AOFAS score and VAS between both groups were not different (p=0.716, p=0.774). The mean Bohler's angle and Gissane's angle between both groups were not different (p=0.343, p=0.357). Two cases of sural nerve injury, one malunion, and one deep infection were occurred in the group of extensile lateral approach. However, patients using sinus tarsi approach had no postoperative complications. CONCLUSION: The clinical results of sinus tarsi approach may be comparable with those of extensile lateral approach, with the advantages of reduced risk of postoperative complications.
Calcaneus ; Humans ; Organic Chemicals ; Postoperative Complications ; Sural Nerve

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.

Fourteen compoumds were isolated from the ethyl acetate portion of the 95% ethanolic extract of Pleione bulbocodioides by a combination of various chromatographic techniques including silica gel, ODS, macroporous adsorbent resin, Sephadex LH-20, and preparative HPLC, of which ten compoumds were phenanthrenes and dihydrophenanthrenes, two compoumds were bibenzyls, one was lignan and a sterol. Their structures were identified on the basis of spectroscopic data as monbarbatain A(1), 2, 7, 2'-trihy-droxy-4, 4', 7'-trimethoxy-1, 1'- biphenanthrene(2), blestriarene A(3), pleionesin B(4), shanciol H(5), 17-hydroxy-7'-(4'-hy-droxy-3 '-methoxyphenyl)- 4-methoxy-9, 10, 7', 8'-tetrahydrophenanthro[2, 3-b]furan-8'-yl methyl acetate(6), 1-p-hydroxybenzyl-4-methoxy phenanthrene-2, 7-diol(7), 1-p-hydroxybenzyl-4-met-hoxy-9, 10-dihydrophenanthrene-2, 7-diol(8), hircinol(9), coelonin( 10), gigantol(11), batatasin 11 (12), syringaresinol(13) and ergosta4, 6, 8 ( 14) , 22-tetraen-3-one (14). Compounds 1-3, 9, 13 and 14 were isolated from this genus for the first time.
Drugs, Chinese Herbal ; chemistry ; Orchidaceae ; chemistry ; Organic Chemicals ; analysis

Sixteen compounds were isolated from the aerial parts of Euphorbia sikkimensis by means of various chromatographic techniques such as silica gel, Sephades LH-20 and RP-18, and their structures were elucidated as naringenin (1), kaempferol (2), quercetin (3), kaempferol-3-O-alpha-L-arabinopyranoside (4), quercetin-3-O-alpha-L-arabinopyranoside (5), quercetin-3-O-(2"-galloyl)-alpha-L-arabinopyranoside (6), 5alpha, 8alpha-epidioxy-(22E, 24R)-ergosta-6,22-dien-3beta-ol (7), stigmast-5-ene-7-one-3beta-ol (8), 3beta-hydroxy4a, 14alpha-dimethyl-5alpha-ergosta-8, 24(28)-dien-7-one(9), beta-sitosterol (10) , 10-cucurbitadienol( 1) , scopoletin(12) , ethyl gallate(13), p-hydroxybenzaldehyde (14), 3 betahydroxybenzeneethanol( 15) ,and 2,4-dihydroxy-6-methoxy-acetophenone (16) on the basis of spectroscopic data analysis. All the compounds are isolated from this plant for the first time, and compounds 1, 4-8, 15 are obtained from Euphorbia species for the first time.
Chromatography ; Euphorbia ; chemistry ; Organic Chemicals ; analysis ; isolation & purification

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.