75775-36-9Relevant articles and documents
Bioactive lignans from the Trunk of Abies holophylla
Kim, Chung Sub,Kwon, Oh Wook,Kim, Sun Yeou,Lee, Kang Ro
, p. 2131 - 2135 (2014/01/06)
Six new lignans (1-6) were isolated from the trunk of Abies holophylla MAXIM, together with 11 known lignans (7-17). The structures of 1-7 were elucidated by spectroscopic methods, acid hydrolysis, and use of the modified Mosher's method. The effects of the isolates on nerve growth factor induction in a C6 rat glioma cell line were evaluated. Compounds 6, 7, and 13 showed significant induction of nerve growth factor secretion at concentrations of 10 μM. Compounds 1, 5, 6, and 16 showed moderate inhibitory effects on nitric oxide production in lipopolysaccharide-activated BV-2 cells (IC50 28.5-36.4 μM).
Studies on the constituents of Clematis species. VI. The constituents of Clematis stans SIEB et ZUCC
Kizu,Shimana,Tomimori
, p. 2187 - 2194 (2007/10/03)
From the roots of Clematis stans three new oleanane-type triterpenoid saponins named clemastanoside A, B and C, and two new lignan glycosides named clemastanin A and B, have been isolated together with three known triterpenoid saponins, huzhangoside B, C and D, and three known lignan glycosides, (+)-lariciresinol 4-O-β-D-glucopyranoside, (+)-lariciresinol 4'- O-β-D-glucopyranoside and (+)-pinoresinol 4,4'-O-bis-β-D-glucopyranoside. In addition, from the leaves, four new oleanane-type triterpenoid saponins, named clemastanoside D, E, F and G, have been isolated together with five known triterpenoid saponins, hederasaponin B, kizutasaponin K12, huzhangoside B, sieboldianoside B and huzhangoside D, and three known flavonoids, isoquercitrin, ratin and quercetin 3-O-β-D-glucuronopyranoside. The structures of the new compounds were elucidated based on chemical and physicochemical evidence as follows: clemastanoside A, 3-O-β-D- ribopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl oleanolic acid 28-O-(4-O-acetyl)-α-L-rhamnopyranosyl-(1→4)-β-D- glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (terminal rhamnosyl 4-O- acetate of huzhangoside B); clemastanoside B and C, 3-O-β-D-xylopyranosyl- and 3-O-β-D-ribopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-β-D- galactopyranosyl oleanolic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D- glucopyranosyl-(1→6)-β-D-glucopyranosyl ester, respectively; clemastanoside D, 3-O-β-D-ribopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-α-L- arabinopyranosyl hederagenin 28-O-β-D-glucopyranosyl ester; clemastanoside E, F and G, terminal rhamnosyl 4-O-, 3-O- and 2-O-acetate of 3-O-β-D- ribopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl hederagenin 28-O-α-L-rhamno-pyranosyl-(1→4)-β-D-glucopyranosyl-(1→6]-β- D-glucopyranosyl ester, respectively; clemastanin A, (7S,8R)-3-methoxy- 3',4,9,9'-tetrahydroxy-4',7-epoxy-5',8-lignan 3'-O-β-D-glucopyranoside; clemastanin B, (+)-lariciresinol 4,4'-O-bis-β-D-glucopyranoside.
PHENOLIC EXTRACTIVES FROM ROOT BARK OF PICEA ABIES
Pan, Hefeng,Lundgren, Lennart N.
, p. 1422 - 1428 (2007/10/02)
Five new compounds, viz., 3,4-dimethoxyphenyl 2-O-(3-O-methyl-α-L-rhamnopyranosyl)-β-D-glucopyranoside, 4'-hydroxyphenacyl β-D-glucopyranoside, (2R,3R)-2,3-dihydro-7-hydroxy-2-(4'-hydroxy-3'-methoxyphenyl)-3-hydroxymethyl-5-benzofuranpropanol 4'-O-(3-O-methyl-α-L-rhamnopyranoside), 1-(4'-hydroxy-3'-methoxyphenyl)-2--1,3-propanediol 4'-O-β-D-xylopyranoside and 3'-O-methylcatechin 7-O-β-D-glucopyranoside, together with several known compounds were isolated from the root bark of Picea abies.The structures were elucidated on the basis of chemical and spectroscopic evidence. - Key words: Picea abies; Pinaceae; root bark; monoaryl glycosides; stilbenes; lignans; flavonoids; proanthocyanidins.
Total Synthesis of Cedrusin and its Methyl Ether
Antus, Sandor,Baitz-Gacs, Eszter,Bauer, Rudolf,Gottsegen, Agnes,Seligmann, Otto,Wagner, Hildebert
, p. 495 - 497 (2007/10/02)
A simple synthesis of the racemates of two naturally occuring neolignans 1 and 2 was achieved starting from caffeic acid ethyl ester and the methyl ferulate 6, respectively.
