balanophonin and pinoresinol

To study the chemical constituents from Serissa japonica.. The constituents were isolated by various chromatographic techniques and their structures were determined on the basis of spectroscopic data,as well as literatures.. Eleven compounds were obtained and identified as 3-hydroxy-1,2-dimethoxyanthraquinone( 1),1,2,4-trimethoxy-3-hydroxy-6-methyl anthraquinone( 2),emodin( 3),pinoresinol( 4),medioresinol( 5),( 7S,8R)-balanophonin-4-O-β-D-glucopyranoside( 6),lupeol( 7),icariside F2( 8),gallic acid( 9),methyl caffeate( 10) and 4-hydroxy-3-methoxyphenyl-β-D-glucopyranoside( 11).. Compounds 4and 5 are isolated from this plant for the first time,compounds 1 ~ 3 and 6 ~ 11 are isolated from Serissa genus for the first time.

Topics: Drugs, Chinese Herbal; Furans; Lignans; Rubiaceae

Sixteen lignanoids were isolated from an aqueous extract of the commonly used Chinese traditional medicine Dangshen, the dried roots of Codonopsis pilosula, by using a combination of various chromatographic techniques, including silica gel, macroporous adsorbent resin, MCI resin, sephadex LH-20, and reversed phase semi-preparative HPLC. On the basis of spectral data analysis, their structures were elucidated and identified as（-）-（7R,7’R,8R,8’S）-4,4’-dihydroxy-3,3’,5,5’,7-pentamethoxy-2,7’-cyclolignane（1）,（-）-（7R,8S）- dihydrodehydrodiconiferyl alcohol 4-O-β-D-glucopyranosyl-（1’’’→2’’）-β-D-glucopyranoside（2）,（-）-（7R,8S）- dihydrodehydrodiconiferyl alcohol（3）,（+）-（7S,8R）-dehydrodiconiferyl alcohol（4）,（+）-balanophonin（5）,（+）- demethoxypinoresinol（6）,（+）-pinoresinol（7）,（+）-epipinoresinol（8）,（-）-syringaresinol（9）,（-）-medioresinol（10）,（-）-lariciresinol（11）,（-）-secoisolariciresinol（12）,（-）-ent-isolariciresinol（13）,（+）-（7S,8S）-3-methoxy-3’,7- expoxy-8,4’-neolignan-4,9,9’-triol（14）,（+）-（7S,8R）-3’,4-dihydroxy-3-methoxy-8,4’-neolignan（15）, and（-）-（7R,8R）-3’,4-dihydroxy-3-methoxy-8,4’-neolignan（16）. All these compounds were isolated from C. pilosula for the first time, while compound 1 is a new natural product of 2,7’-cyclolignan and 2 is a new 4’,7-epoxy- 8,3’-neolignan diglucoside. Compound 12 showed activity against Fe(2+)-cysteine induced rat liver microsomal lipid peroxidation with an inhibition ratio of（63.4 ± 8.3） % at 1×10(-5) mol·L(-1).

Topics: Animals; Butylene Glycols; Codonopsis; Drugs, Chinese Herbal; Furans; Lignans; Microsomes, Liver; Molecular Structure; Plant Extracts; Plant Roots; Rats

To study the chemical constituents of Eucommia ulmoides in Guizhou Province.. Silica gel, Sephadex LH-20, RP-18, MCI and semi-preparative HPLC were used to study the chemical constituents of Eucommia ulmoides, and the chemical structures were elucidated by application of spectral data.. 16 compounds were isolated from the bark of Eucommia ulmoides. Their structures were identified as β-sitosterol (1), cycloeucalenol (2), betulinic acid (3), 24-methylenecycloartenone (4), cycloeucalenone (5), salicifoliol (6), pinoresinol (7), genipin (8) , alternariol (9), balanophonin (10), eucommidiol (11), pinoresinol-4'-O-β-D-glucopyranoside (12), eucommiol (13), deoxyeucommiol (14), 8-hydroxypinoresinol (15), and dehydrodiconiferyl alcohol -γ'-O-β-D-glucopyranoside (16).. Seven compounds, including compounds 2,4 - 6,9, 10 and 15 are isolated from Eucommia ulmoides for the first time, and compound 14 is isolated from the bark of Eucommia ulmoides for the first time.

Topics: Betulinic Acid; Chromatography, High Pressure Liquid; Eucommiaceae; Furans; Lignans; Pentacyclic Triterpenes; Phenols; Phytochemicals; Plant Bark; Sitosterols; Triterpenes