The compounds from the root of Rhododendron molle G. Don were isolated, purified by various chromatographic techniques, and their structures were identified according to the physical and chemical features and spectral data. Three compounds were separated from the root of Rhododendron molle G. Don and identified as Rhodojaponin-III, taraxerol, beta-sitosterol for the first time.
Diterpenes/*isolation & purification ; Drugs, Chinese Herbal/chemistry ; Oleanolic Acid/*analogs & derivatives ; Oleanolic Acid/isolation & purification ; Plant Roots/*chemistry ; Rhododendron/*chemistry ; Sitosterols/*isolation & purification

OBJECTIVETo analyze the chemical constituents of the non-alkaloid fraction of Uncaria macrophylla.

METHODSThe constituents were separated and purified by silica gel chromatography and recrystalization, and their structures were identified by infrared, mass and nuclear magnetic resonance spectrometry.

RESULTSSix compounds were isolated from the non-alkaloid fraction of Uncaria macrophylla, whose structures were identified as beta-sitosterol, beta-daucosterol, ursolic acid, alpha-amyrin acetate, 3beta, 6beta, 23-trihydroxyurs-12-en-28-oic acid, 3beta-hydroxyurs-12-en-27, and 3beta-hydroxyurs-12-en-27, 28-dioic acid, respectively.

CONCLUSIONSUrsolic acid is the main component in the non-alkaloid fraction of Uncaria macrophylla. Alpha-amyrin acetate and 3beta-hydroxyurs-12-en-27, 28-dioic acid are isolated and characterized for the first time from this plant.

Oleanolic Acid ; analogs & derivatives ; isolation & purification ; Triterpenes ; isolation & purification ; Uncaria ; chemistry

OBJECTIVETo study the chemical constituents of the fruit of Rubus chingii.

METHODThe compounds were isolated and purified by recrystallization and chromatography with silica gel column and Sephadex LH-20 column. Their structures were identified by physicochemical properties and spectral analysis.

RESULTEleven compounds were isolated as oleanic acid (I), ursolic acid (II), maslinic acid (III), 2alpha-hydroxyursolic acid (IV), arjunic acid (V), hexacosyl p-coumarate (VI), tiliroside (VII), stearic acid (VIII), lacceroic acid (IX), beta-sitosterol (X), daucosterol (XI).

CONCLUSIONCompounds I, II, III, IV, V, VI, VIII, IX, XI were isolated from R. chingii for the first time.

Fruit ; chemistry ; Oleanolic Acid ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Rosaceae ; chemistry ; Triterpenes ; chemistry ; isolation & purification

OBJECTIVETo study the chemical constituents from Rhodobryum roseum.

METHODThe compounds were isolated and purified by recrystallization and chromatography with silica gel and sephadex LH-20 column. Their structures were identified by physicochemical properties and spectral analysis.

RESULTEight compounds were isolated and identified as apigenin (1), quercetin (2), oleanolic acid (3), 2alpha-hydroxyoleanolic acid (4), 2alpha-hydroxyursolic acid (5), protocatechuic acid (6), p-hydroxybenzoic acid (7), p-hydroxycinnamic acid (8).

CONCLUSIONCompounds 1-8 were isolated from R. roseum for the first time.

Apigenin ; chemistry ; isolation & purification ; Bryopsida ; chemistry ; Oleanolic Acid ; analogs & derivatives ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Triterpenes ; chemistry ; isolation & purification

OBJECTIVETo investigate the chemical constituents of Helwingia Chinensis.

METHODCompounds were isolated with silica gel, Sephadex LH - 20 and polyamide chromatography, and their structures were elucidated by means of spectral analysis.

RESULTSix compounds were isolated and identified as cinnamic acid (1), gult-5-en-3beta-ol (2), friedelin (3), alpha-amyrin (4), luteolin-7-O-beta-D-glucoside (5) and 4, 5-dimethoxy-1, 2-benzoquinone (6).

CONCLUSIONAll these Compounds were obtained from H. chinensis for the first time.

Cinnamates ; chemistry ; isolation & purification ; Cornaceae ; chemistry ; Oleanolic Acid ; analogs & derivatives ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Triterpenes ; chemistry ; isolation & purification

To study the chemical constituents of Euphorbia antiquorum L., the constituents were isolated with normal-phase and reverse-phase silica gel column chromatography and their structures were elucidated on the basis of spectroscopic data. Seven terpenoids were obtained from EtOAc extract of E. antiquoru L. They were identified as antiquorine A (1), antiquorine B (2), ent-13S-hydroxy-16-atisene-3,14-dione (3), taraxerol (4), 3beta-hydroxy-25,26,27-trisnorcycloart-24-oic acid (5), 9beta,19-cyclolanostan-3beta-ol (6) and psi-taraxastane-3,20-diol (7) by spectral analysis. Compounds 1-3 are diterpenoids, which belonged to abietane, ent-kaurane and atisane respectively. Among them, compounds 1 and 2 are new compounds. Compounds 4-7 are triterpenoids, and compound 5 is a degraded cycloartane triterpenoid which is a new natural product. Compound 7 was isolated from this plant for the first time. It demonstrated that the chemical structures of constituents in this plant were diverse.
Euphorbia ; chemistry ; Molecular Structure ; Oleanolic Acid ; analogs & derivatives ; isolation & purification ; Plants, Medicinal ; chemistry ; Terpenes ; chemistry ; isolation & purification

OBJECTIVETo study the constituents from Clerodendrum bungei.

METHODThe constituents were isolated and purified with chromatographic methods, and identified by NMR, MS and IR.

RESULTFive compounds were isolated, beta-sitosterol (1), taraxerol (2), glochidone (3), glochidonol (4), glochidiol (5).

CONCLUSIONCompounds (3), (4) and (5) were isolated for the first time from C. bungei.

Clerodendrum ; chemistry ; Oleanolic Acid ; analogs & derivatives ; chemistry ; isolation & purification ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry ; Sitosterols ; chemistry ; isolation & purification

OBJECTIVETo investigate the chemical constituents of Ilex pernyi.

METHODThe chemical constituents were isolated by various column chromatographic methods. The structures were identified by spectral data.

RESULTEight triterpenoid compounds were isolated and identified as ursolic acid (1), lupeol (2), alpha-amyrin (3), uvaol (4), 3beta-hydroxyurs-11-ene-13beta-olide (5), pomolic acid (6), lup-20 (29)-ene-3beta, 24-diol (7), 3beta, 23-dihydroxy-urs-12-en-28-oic acid (8).

CONCLUSIONThe eight compounds were obtained from this plant for the first time.

Ilex ; chemistry ; Oleanolic Acid ; analogs & derivatives ; chemistry ; isolation & purification ; Plant Leaves ; chemistry ; Plants, Medicinal ; chemistry ; Triterpenes ; chemistry ; isolation & purification

OBJECTIVETo study the chemical constituents of the root of Rhaponticum uniflorum.

METHODSeparation and purification were performed on silica gel and Sephadex LH-20 column chromatography. Their structure were elucidated on the basis of physicochemical and spectral analysis.

RESULTFive triterpenoid compounds were isolated and identified as ursolic acid (1), 3-oxo-19alpha-hydroxyurs-12-en-28-oic acid (2), pomolic acid (3), arjunic acid (4) and tormentic acid (5), respectively.

CONCLUSIONCompounds 1 approximately 5 were isolated from the genus Rhaponticum for the first time.

Leuzea ; chemistry ; Oleanolic Acid ; analogs & derivatives ; chemistry ; isolation & purification ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry ; Triterpenes ; chemistry ; isolation & purification

OBJECTIVETo study the chemical constituents from the whole plant of Lysimachia davurica.

METHODThe constituents were separated and purified by column chromatograph, and identified by spectral analysis and physical data.

RESULTSix compounds were isolated and identified as triacontanoic acid(I), palmitic acid(II), beta-amyrin(III), stigmasterol(IV), oleanolic acid(V), soya-cerebroside I (VI).

CONCLUSIONI, III, VI were isolated from this gene for the first time.

Cerebrosides ; chemistry ; isolation & purification ; Oleanolic Acid ; analogs & derivatives ; Plants, Medicinal ; chemistry ; Primulaceae ; chemistry ; Triterpenes ; chemistry ; isolation & purification