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1.
The roots of Terminalia alata yielded three new glycosides: 3,3'-di-O-methylellagic acid 4-O-beta-D-glucopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->2)-alpha-L-arabinopyranoside (1), 5,7,2'-tri-O-methylflavanone 4'-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranoside (2), and 2alpha,3beta, 19beta,23-tetrahydroxyolean-12-en-28-oic acid 3-O-beta-D-galactopyranosyl-(1-->3)-beta-D-glucopyranoside-28-O-beta-D-glucopyranoside (3). Compounds 2 and 3 displayed antifungal activity. 相似文献
2.
《Fitoterapia》1999,70(4):390-394
The roots of Terminalia alata yielded a new terpene glycoside, 2α, 3β, 19α-trihydroxy-olean-12-en-28-oic acid methylester 3β-O-rutinoside (1), a new flavanone, 8-methyl-5,7,2′, 4′-tetramethoxy-flavanone (2) and a new chalchone glycoside, 2-O-β-glucosyloxy-4,6,2′,4′-tetramethoxychalchone (3). 相似文献
3.
A new triterpenoid saponin was isolated from the roots of Silene cucubalus and its structure was determined on the basis of one- and two-dimensional NMR spectroscopy as gypsogenin 3-O-beta-xylopyranosyl-(1-->3)-[beta-galactopyranosyl-(1-->2)]-beta-glucuronopyranoside. A known saponin, quillaic acid 3-O-beta-xylopyranosyl-(1-->3)-[beta-galactopyranosyl-(1-->2)]-beta-glucuronopyranoside, was also isolated. 相似文献
4.
A new cardenolide, 16,17-dihydroneridienone 3-O-beta-D-glucopyranosyl-(1-->6)-O-beta-D-galactopyranoside (1), was isolated from the roots of Terminalia arjuna. 相似文献
5.
A new phenolic glycoside from the roots of Lygodium japonicum 总被引:1,自引:0,他引:1
A new phenolic glycoside, 3,4-dihydroxybenzoic acid 4-O-(4'-O-methyl)-beta-D-glucopyranoside (1), was isolated from the roots of Lygodium japonicum. The structure was elucidated on the basis of spectroscopic methods. 相似文献
6.
From the roots of Smilax bockii a new compound, 7-hydroxymethyl-1, 4, 5-trihydroxynaphthalene-4-O-beta-D-xylopyranosyl(1-->6)-beta-D-glucopyranoside, was isolated. The structure of the new compound was elucidated on the basis of spectroscopic methods. 相似文献
7.
《Fitoterapia》1999,70(3):266-268
A new aromatic glycoside, 4-O-glycosyloxy-2-hydroxy-6-methoxyacetophenone (1), has been isolated from the roots of Prunus armeniaca. 相似文献
8.
An investigation of the triterpenoid fraction of zucchini seeds afforded two novel multiflorane p-aminobenzoates, identified as 7-epi zucchini factor A and debenzoyl zucchini factor B. Multiflorane p-aminobenzoates could not be detected in zucchini sprouts, which contained bryonolic acid as the only multiflorane constituent. No compound of this type could be obtained from adult plant parts (roots, stems, leaves). 相似文献
9.
A new cardenolide, cannogenol 3-O-beta-D-galactopyranosyl-(1-->4)-O-alpha-L-rhamnopyranoside (1), was isolated form the seeds of Teminalia bellerica. 相似文献
10.
In our investigation to find out new anti-acne agent, we focused on Terminalia laxiflora Engl & Diels (Combretaceae) methanolic wood extract, which has been selected during previous screening experiments for anti-acne agents, which included 29 species of Sudanese medicinal plants. Based on the biologically guided fractionation using an antibacterial assay against Propionibacterium acnes, a lipase inhibitory assay and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity assay; five tannin-related compounds were isolated, such as ellagic acid, flavogallonic acid dilactone, terchebulin and gallic acid. Terchebulin showed good antibacterial activity; minimum inhibitory concentration (MIC) = 125 μg/ml and minimum bactericidal concentration (MBC) = 250 μg/ml. Gallic acid exhibited lipase inhibitory activity with IC50 value of 149.3 μM, which showed strong inhibition compared with terchebulin, IC50 260.7 μM. However, all compounds exhibited better or equal DPPH radical scavenging activity to (+)-catechin as positive control. Ellagic acid and terchebulin showed the best DPPH radical scavenging activities, IC50 4.86 and 4.90 μM, respectively. This study demonstrated that terchebulin has potentiality as an anti-acne agent. 相似文献
11.
12.
The isolation of baseonemoside C (1), a new pregnane glycoside from the aerial parts of Baseonema acuminatum is reported. 相似文献
13.
《Fitoterapia》2014
Two new hydrolysable tannins, chebumeinin A (1) and chebumeinin B (2), together with eight known related compounds (3-10), were isolated from the fruits of Terminalia chebula. The new compounds were structurally determined by analysis of their spectroscopic data and the known compounds characterized by comparing their spectroscopic data with literature values. All isolates were evaluated by an HCV protease inhibition assay, and some compounds were found to be potently active. 相似文献
14.
The ethylacetate and n-butanol fractions of ethanolic extract of Platanus orientalis leaves led to the isolation of new acylated flavonol glycoside as 3',5,7-trihydroxy-4'-methoxyflavonol 3-[O-2-O-(2,4-Dihydroxy)-E-cinnamoyl-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranosyl (1→2)]-β-D-glucopyranoside, along with seven known compounds. All the compounds were characterized by NMR including 2D NMR techniques. The isolates were evaluated for NF-κB, nitric oxide (NO), aromatase and QR2 chemoprevention activities and some of them appeared to be modestly active. 相似文献
15.
《Fitoterapia》1999,70(2):127-129
A novel isoflavone glycoside, 5,4′-dimethoxy-3′-prenylbiochanin 7-O-β-d-galactoside (1), was isolated from the leaves of S. indicus. 相似文献
16.
A new flavone glycoside, apigenin 5-O-alpha-L-rhamnopyranosyl-(1-->3)-beta-D-glucopyranoside (1), along with four known flavonol glycosides (2-5), were isolated from the leaf of Cephalotaxus koreana. The new glycoside 1 showed inhibitory activity in superoxide radical scavenging assay with IC(50) value of 13.0 microM, while it showed weak activity in 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay. Compounds 2-5 exhibited antioxidant activity in scavenging DPPH and superoxide radicals with IC(50) values ranging from 5.7 to 22.3 microM. 相似文献
17.
The methyl ester of diosmetin 7-O-beta-D-glucuronide (1) was isolated from the fruits of Luffa cylindrica. Its structure was determined by spectroscopic methods. 相似文献
18.
《Fitoterapia》1999,70(3):287-289
The new flavonoid 5,7-dihydroxy-6-methoxyflavone 7-O-α-l-rhamnopyranoside (1) was isolated from the seeds of Tecoma undulata. 相似文献
19.
From the husks of Xanthoceras sorbifolia, a new coumarin glycoside, isofraxetin-6-O-beta-D-glucopyranoside (1), was isolated. The structure was established on the basis of spectroscopic methods. 相似文献
20.
A new secoiridoid glycoside from Lonicera angustifolia 总被引:3,自引:0,他引:3
A new secoiridoid glycoside, 6'-O-beta-apiofuranosylsweroside (1), together with the known compounds sweroside, loganin, beta-sitosterol, oleanolic acid, ursolic acid and methyl-4-hydroxy benzoate have been identified from the leaves of Lonicera angustifolia. The structure of the new compound has been elucidated on the basis of spectroscopic and chemical evidence. 相似文献