scholarly journals Chemical Constituents of Vitex trifolia Leaves

2018 ◽  
Vol 13 (2) ◽  
pp. 1934578X1801300
Author(s):  
Ninh Khac Ban ◽  
Nguyen Thi Kim Thoa ◽  
Tran My Linh ◽  
Vu Huong Giang ◽  
Do Thi Trang ◽  
...  
Keyword(s):  
Spectroscopic Analysis ◽  
Chemical Constituents ◽  
2D Nmr ◽  
Esi Ms ◽  
Chromatographic Methods ◽  
Nmr Data

Using various chromatographic methods, one new lanostane triterpene, 3 α-hydroxylanosta-8,24 E-dien-26-oic acid (1), one new lignan, matairesinol 4'- O-β-D-glucopyranoside (2) along with five known compounds, ecdysone (3), 20-hydroxyecdysone (4), 20-hydroxyecdysone 2,3-monoacetonide (5), turkesterone (6), and polypodine B (7) were isolated from the leaves of Vitex trifolia L. Their structures were elucidated by 1D-, 2D-NMR spectroscopic analysis, HR-ESI-MS, CD, and by comparing with the NMR data reported in the literature.

scholarly journals Chemical Constituents of Cordyceps cicadae

2015 ◽  
Vol 10 (12) ◽  
pp. 1934578X1501001 ◽  
Author(s):  
Zhi-Bo Chu ◽  
Jun Chang ◽  
Ying Zhu ◽  
Xun Sun
Keyword(s):  
Amino Acids ◽  
Spectroscopic Analysis ◽  
Chemical Constituents ◽  
2D Nmr ◽  
Cordyceps Cicadae ◽  
Nmr Techniques ◽  
Dopamine Analogues

One new bifuran derivative (1), together with fourteen known compounds, were isolated from Cordyceps cicadae X. Q. Shing. The known compounds included nine nucleosides, uracil (2), uridine (3), 2′-deoxyuridine (4), 2′-deoxyinosine (5), guanosine (6), 2′-deoxyguanosine (7), thymidine (8), adenosine (9), and 2′-deoxyadenosine (10); three amino acids tryptophan (11), phenylalanine (12), and tyrosine (13); and two dopamine analogues N-acetylnoradrenaline (14) and its dimer, trans–2-(3′,4′-dihydroxyphenyl)-3-acetylamino-7-( N-acetyl-2″-amino-ethylene)-1,4-benzodioxane (15). Their structures were decisively elucidated by spectroscopic analysis, including 1D and 2D NMR techniques.

scholarly journals Chemical constituents of Chaenomeles sinensis twigs and their biological activity

2020 ◽  
Vol 16 ◽  
pp. 3078-3085
Author(s):  
Joon Min Cha ◽  
Dong Hyun Kim ◽  
Lalita Subedi ◽  
Zahra Khan ◽  
Sang Un Choi ◽  
...  
Keyword(s):  
Biological Activity ◽  
Data Analysis ◽  
Cell Lines ◽  
Chemical Structure ◽  
Biological Effects ◽  
Chemical Constituents ◽  
2D Nmr ◽  
Nmr Data ◽  
Chaenomeles Sinensis ◽  
Modified Mosher’S Method

A new megastigmane-type norsesquiterpenoid glycoside, chaemeloside (1), was isolated from the twigs of Chaenomeles sinensis together with 11 known phytochemicals through chromatographic methods. The chemical structure of the new isolate 1 was determined by conventional 1D and 2D NMR data analysis, ECD experiment, hydrolysis followed by a modified Mosher’s method, and LC–MS analysis. The characterized compounds’ biological effects including cytotoxicity against cancer cell lines, antineuroinflammatory activity, and potential neurotrophic effect were evaluated.

scholarly journals Chemical Constituents from Scindapsus officinalis (Roxb.) Schott. and Their Anti–Inflammatory Activities

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2577 ◽  
Author(s):  
Hongjing Dong ◽  
Yanling Geng ◽  
Xueyong Wang ◽  
Xiangyun Song ◽  
Xiao Wang ◽  
...  
Keyword(s):  
Chemical Constituents ◽  
2D Nmr ◽  
No Production ◽  
Inhibitory Effects ◽  
Nmr Data ◽  
Extensive Analysis ◽  
Ic50 Values ◽  
Monoterpene Glycoside ◽  
Anti Inflammatory

One new monoterpene glycoside (1), one new phenyl glycoside (2), one new caffeoyl derivative (3), were isolated from Scindapsus officinalis (Roxb.) Schott., along with four known compounds (4–7). Structures of the isolated compounds were elucidated by extensive analysis of spectroscopic data, especially 2D NMR data and comparison with literatures. All isolates were evaluated for anti-inflammatory activity against nitric oxide (NO) production in vitro. Compounds 3 and 7 exhibited moderate inhibitory effects on NO production with IC50 values of 12.2 ± 0.8 and 18.9 ± 0.3 μM, respectively.

Dammarane and Ceanothane Triterpenes from Zizyphus glabrata

2006 ◽  
Vol 61 (1) ◽  
pp. 87-92 ◽  
Author(s):  
Seru Ganapaty ◽  
Pannakal S. Thomas ◽  
Kancharalapalli V. Ramana ◽  
Gloria Karagianis ◽  
Peter G. Waterman
Keyword(s):  
Bactericidal Activity ◽  
Chemical Constituents ◽  
2D Nmr ◽  
First Report ◽  
Nmr Data ◽  
C Nmr ◽  
Dammarane Glycoside

From the leaves of Zizyphus glabrata, a new dammarane-type triterpene, pseudojujubogenin -3-O- β -D-glucopyranoside, along with the known ceanothane triterpenes, granulosic acid, ceanothic acid and daucosterol were isolated. The structures of the compounds were fully characterized by detailed NMR investigations including 1H and 13C NMR, HSQC, COSY, HMBC and NOESY experiments. In addition, the dammarane glycoside was tested for its potential to inhibit various bacteria and was found to possess significant bactericidal activity. The 1H, 13C and full 2D-NMR data on granulosic acid has also been presented. This is the first report on the chemical constituents of the leaves of Z. glabrata.

scholarly journals Chemical constituents of the lichen Roccella sinensis growing in Binh Thuan province

2019 ◽  
Vol 2 (5) ◽  
pp. 63-67
Author(s):  
Huy Thuc Duong ◽  
Hao Xuan Bui
Keyword(s):  
Spectroscopic Analysis ◽  
Chemical Constituents ◽  
Human Lung Cancer ◽  
Cytotoxic Activities ◽  
Human Breast ◽  
Nmr Data ◽  
Liver Hepatocellular Carcinoma ◽  
First Time ◽  
Layer Chromatography ◽  
Mcf 7

The lichen Roccella sinensis has not been studied chemically. This research described the isolation and elucidation of compounds isolated from the lichen Roccella sinensis collected in Binh Thuan. Phytochemistry investigation of this lichen was carried out by using normal phase silica gel column chromatography and thin-layer chromatography. Six compounds was isolated. Their structures were established by extensively spectroscopic analysis as well as comparison with NMR data in the literatures. They are (+)-D-montagnetol (1), (+)-D-erythrin (2), lecanorin (3), 1-acetylerythritol (4), (E)-nostodione A (5), and 2,4-dihydroxyphthalide (6). This is the first time compounds 3 6 were found in the Roccella genus. Compounds 1, 2, and 6 were evaluated for their cytotoxic activities against HepG2 (liver hepatocellular carcinoma), NCI-H460 (human lung cancer), MCF-7 (human breast cancer), and HeLa (human epithelial cancer) and all of them showed no activity.

scholarly journals Chemical Constituents from an Endophytic Fungus Chaetomium Globosum Z1

2013 ◽  
Vol 8 (9) ◽  
pp. 1934578X1300800
Author(s):  
Chun-Yan Zhang ◽  
Xiao Ji ◽  
Xuan Gui ◽  
Bao-Kang Huang
Keyword(s):  
Cytotoxic Activity ◽  
Cell Lines ◽  
Endophytic Fungus ◽  
Chemical Constituents ◽  
2D Nmr ◽  
Chaetomium Globosum ◽  
Spectroscopic Methods ◽  
Esi Ms

A new ergosterol, 15β-hydroxyl-(22 E,24 R)-ergosta-3,5,8,22-tetraen-one (1), along with three known ergosterols, two known cytochalasins, and two known azapholines were isolated from Chaetomium globosum Z1. The structures of these compounds were elucidated on the basis of spectroscopic methods (HR-ESI-MS, 1D NMR, and 2D NMR). Compound 6 showed significant cytotoxic activity against A-549 and MG-63 cell lines with IC50 values of 6.96 and 1.73 μg/mL, respectively.

scholarly journals Alkaloids from Peumus boldus and their Acetylcholinesterase, Butyrylcholinesterase and Prolyl Oligopeptidase Inhibition Activity

2015 ◽  
Vol 10 (4) ◽  
pp. 1934578X1501000 ◽  
Author(s):  
Anna Hošt'álková ◽  
Lubomír Opletal ◽  
Jiří Kuneš ◽  
Zdeněk Novák ◽  
Martina Hrabinová ◽  
...  
Keyword(s):  
Spectroscopic Analysis ◽  
2D Nmr ◽  
Inhibition Activity ◽  
Isoquinoline Alkaloids ◽  
Prolyl Oligopeptidase ◽  
Benzylisoquinoline Alkaloids ◽  
Chemical Structures ◽  
Chromatographic Methods ◽  
Ellman’S Method ◽  
Butyrylcholinesterase Inhibition

Eleven isoquinoline alkaloids (1–11) were isolated from dried leaves of Peumus boldus Mol. by standard chromatographic methods. The chemical structures were elucidated by MS, and 1D and 2D NMR spectroscopic analysis, and by comparison with literature data. Compounds isolated in sufficient amount were evaluated for their acetylcholinesterase, and butyrylcholinesterase inhibition activity using Ellman's method. In the prolyl oligopeptidase assay, Z-Gly-Pro- p-nitroanilide was used as substrate. Promising butyrylcholinesterase inhibition activities were demonstrated by two benzylisoquinoline alkaloids, reticuline (8) and N-methylcoclaurine (9), with IC50 values of 33.6 ± 3.0 μM and 15.0 ± 1.4 μM, respectively. Important prolyl oligopeptidase inhibition activities were shown by N-methyllaurotetanine (6) and sinoacutine (4) with IC50 values of 135.4 ± 23.2 μM and 143.1 ± 25.4 μM, respectively. Other tested compounds were considered inactive.

scholarly journals Triterpene Bisdesmosides from the Stems of Akebia Quinata

2008 ◽  
Vol 3 (6) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Yoshihiro Mimaki ◽  
Saya Doi
Keyword(s):  
Spectroscopic Analysis ◽  
2D Nmr ◽  
Triterpene Saponins ◽  
Nmr Data ◽  
New Compounds ◽  
Chemical Evidence

Five new triterpene saponins (1–5) were isolated from the stems of Akebia quinata. On the basis of extensive spectroscopic analysis, including 2D NMR data, and chemical evidence, the structures of the new compounds were determined to be 3β-[( O-β-D-glucopyranosyl-(1→3)-α-L-arabinopyranosyl)oxy]-29-hydroxyolean-12-en-28-oic acid O-α-L-rhamnopyranosyl-(1→4)- O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (1), 3β-[( O-β-D-glucopyranosyl-(1→3)- O-[α-L-rhamnopyranosyl-(1→2)]-α-L-arabinopyranosyl)oxy]-29-hydroxyolean-12-en-28-oic acid O-α-L-rhamnopyranosyl-(1→4)- O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (2), 3β-[( O-β-D-glucuronopyranosyl-(1→3)- O-[α-L-rhamnopyranosyl-(1→2)]-α-L-arabinopyranosyl)oxy]-29-hydroxyolean-12-en-28-oic acid O-α-L-rhamnopyranosyl-(1→4)- O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (3), 3β-[( O-β-D-glucopyranosyl-(1→3)-α-L-arabinopyranosyl)oxy]-23,29-dihydroxyolean-12-en-28-oic acid O-α-L-rhamnopyranosyl-(1→4)- O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (4), and 3β-[( O-β-D-glucopyranosyl-(1→3)- O-[α-L-rhamnopyranosyl-(1→2)]-α-L-arabinopyranosyl)oxy]-23,29-dihydroxy-olean-12-en-28-oic acid O-α-L-rhamnopyranosyl-(1→4)- O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (5), respectively.

scholarly journals Chemical Constituents of the Terrestrial Stems of Ephedra sinica and their PPAR-γ Ligand-Binding Activity

2020 ◽  
Vol 7 (01) ◽  
pp. e12-e16
Author(s):  
Yukiko Matsuo ◽  
Mayu Sasaki ◽  
Haruhiko Fukaya ◽  
Katsunori Miyake ◽  
Riko Takeuchi ◽  
...  
Keyword(s):  
Ligand Binding ◽  
Spectroscopic Analysis ◽  
Binding Assay ◽  
Chemical Constituents ◽  
2D Nmr ◽  
Binding Activity ◽  
Ephedra Sinica ◽  
Ppar Γ ◽  
Bioassay Guided Fractionation ◽  
Ligand Binding Activity

AbstractBioassay-guided fractionation of the MeOH extract of Ephedra sinica terrestrial stems, using a PPAR-γ ligand binding assay, resulted in the isolation of 10 compounds, including one new bisabolane-type sesquiterpenoid (10). The structure of the new compound was determined by extensive spectroscopic analysis, including two-dimensional (2D) NMR. Among the isolated compounds, the sitosterol derivatives (1 and 2), flavonoid glucoside (7), and the new sesquiterpenoid (10), showed significant PPAR-γ ligand-binding activity.

scholarly journals Polyhydroxylated Steroidal Saponins from the Rhizomes of Convallaria majalis

2007 ◽  
Vol 2 (5) ◽  
pp. 1934578X0700200
Author(s):  
Taro Higano ◽  
Minpei Kuroda ◽  
Maki Jitsuno ◽  
Yoshihiro Mimaki
Keyword(s):  
Spectroscopic Analysis ◽  
Methanolic Extract ◽  
2D Nmr ◽  
Chemical Transformations ◽  
Steroidal Saponins ◽  
Nmr Data ◽  
Spirostanol Saponins ◽  
Convallaria Majalis

Six new polyhydroxylated spirostanol saponins (1–6) were isolated from the methanolic extract of the rhizomes of Convallaria majalis. On the basis of extensive spectroscopic analysis, including 2D NMR data, and a few chemical transformations, the structures of 1–6 were determined to be 1β,2β,3β-trihydroxy-5β-spirost-25(27)-en-5-yl β-D-galactopyranoside (1), (25 S)-1β,2β,3β-trihydroxy-5β-spirostan-5-yl β-D-galactopyranoside (2), 1β,2β,3β,4β-tetrahydroxy-5β-spirost-25(27)-en-5-yl β-D-galactopyranoside (3), (25 S)-1β,2β,3β,4β-tetrahydroxy-5β-spirostan-5-yl β-D-galactopyranoside (4), 1β,2β,3β,4β-tetrahydroxyspirost-25(27)-en-5-yl α-L-arabinopyranoside (5), and (25 S)-1β,2β,3β,4β-tetrahydroxy-5β-spirostan-5-yl α-L-arabinopyranoside (6), respectively.

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