Flavon- and Flavonolglycosides from Achillea pannonica Scheele

2001 ◽  
Vol 56 (7-8) ◽  
pp. 521-525 ◽  
Author(s):  
Denata Kasaj ◽  
Liselotte Krenn ◽  
Sonja Prinz ◽  
Antje Hüfner ◽  
Shi Shan Yuc ◽  
...  
Keyword(s):  
Methanolic Extract ◽  
2D Nmr ◽  
Flavonoid Glycosides ◽  
Spectroscopic Methods ◽  
Esi Ms ◽  
Aerial Parts ◽  
Nmr Techniques ◽  
Chemotaxonomic Study ◽  
First Time ◽  
C Nmr

The detailed investigation of a methanolic extract of aerial parts of Achillea pannonica SCHEELE. within a chemotaxonomic study led to the isolation of 6 flavonoid glycosides. Besides rutin, apigenin-7-O-glucopyranoside, luteolin-7-O-glucopyranoside, apigenin-7-O-rutinoside and acacetin-7-O-rutinoside, an unusual flavondiglucoside was isolated. Its structure was established by UV, 1HNMR and 13C NMR spectroscopic methods including 2D-NMR techniques and ESI-MS as luteolin-7,4′-O-β-diglucoside. This substance is reported for the first time in the genus Achillea. Chemotaxonomic aspects are discussed briefly

Flavonoids from Achillea nobilis L.

2003 ◽  
Vol 58 (1-2) ◽  
pp. 11-16 ◽  
Author(s):  
Liselotte Krenn ◽  
Anca Miron ◽  
Enne Pemp ◽  
Ursula Petr ◽  
Brigitte Kopp
Keyword(s):  
Methyl Ether ◽  
Methanolic Extract ◽  
2D Nmr ◽  
Spectroscopic Methods ◽  
Esi Ms ◽  
H Nmr ◽  
Aerial Parts ◽  
Nmr Techniques ◽  
C Nmr

The detailed investigation of a methanolic extract of aerial parts of Achillea nobilis resulted in the isolation of 10 flavonoids. A new C-glycosylflavone, luteolin-6-C-apiofuranosyl-(1‴→2″)-glucoside, was isolated besides orientin, isoorientin, vitexin, isoschaftoside, luteolin- 7-O-β-glucuronide, luteolin-4′-O-β-glucoside and quercetin-3-O-methyl ether and two rare flavonolglycosides, quercetin-3-O-α-arabinosyl-(1‴→6″ )-glucoside and quercetin-3-O-methylether-7-O-β-glucoside. The structures were established either by comparison with authentic substances or by UV, 1H NMR and 13C NMR spectroscopic methods including 2ᴅ-NMR techniques and ESI-MS

scholarly journals Flavonoids in Achillea collina

2001 ◽  
Vol 69 (1) ◽  
pp. 75-83 ◽  
Author(s):  
Denata Kasaj ◽  
Liselotte Krenn ◽  
Gottfried Reznicek ◽  
Sonja Prinz ◽  
Antje Hüfner ◽  
...  
Keyword(s):  
Methanolic Extract ◽  
2D Nmr ◽  
Spectroscopic Methods ◽  
Esi Ms ◽  
Aerial Parts ◽  
First Time

In a detailed study on the flavonoid pattern of Achillea collina BECKER ten flavonoids were isolated from a methanolic extract of aerial parts of the plant. Their structures were determined by UV, ESI-MS, GC-MS and NMR spectroscopic methods including 2D-NMR. Apigenin-7-O-rutinoside was proven for the first time in the genus Achillea.

The Structure Elucidation and Antimicrobial Activities of Nonsterol Triterpenoids from Ixeris chinensis

2014 ◽  
Vol 69 (9-10) ◽  
pp. 1021-1025 ◽  
Author(s):  
Qing-Hu Wang ◽  
Na-Ren-Chao-Ke-Tu Han ◽  
Na-Yin-Tai Dai ◽  
Xiao-Lan Wu ◽  
Wen-Quan Tai ◽  
...  
Keyword(s):  
Petroleum Ether ◽  
Structure Elucidation ◽  
Petroleum Ether Extract ◽  
2D Nmr ◽  
Antimicrobial Activities ◽  
Spectroscopic Methods ◽  
Ether Extract ◽  
Esi Ms ◽  
Nmr Techniques ◽  
First Time

Abstract An investigation of the petroleum ether extract from Ixeris chinensis Nakai has led to the isolation of a new compound, 3-O-acetyl-22,28-cyclobauer-7-en-3β-ol (1), together with four known compounds which have been isolated from this plant for the first time, namely taraxast-20-en-3β-ol (2), 3-O-acetyl-taraxast-20-en-3β-ol (3), taraxast-20(30)-en-3β-ol (4), and 3-O-acetyl-taraxast-20(30)- en-3β-ol (5). The structures of the isolated compounds have been elucidated on the basis of spectroscopic methods including UV, IR, ESI-MS, 1D NMR, 2D NMR techniques, and by comparison with data reported in the literature. All compounds have been evaluated for their activity against various bacteria and shown to give good results

scholarly journals Flavonoid Constituents of Pistacia integerrima

2012 ◽  
Vol 7 (8) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Zia Ullah ◽  
Rashad Mehmood ◽  
Muhammad Imran ◽  
Abdul Malik ◽  
Rehana A. Afzal
Keyword(s):  
Spectroscopic Analysis ◽  
Methanolic Extract ◽  
2D Nmr ◽  
Flavonoid Glycosides ◽  
Acidic Hydrolysis ◽  
Aerial Parts ◽  
First Time

Pistacides A and B (1–2), two new flavonoid glycosides, have been isolated from the methanolic extract of the aerial parts of Pistacia integerrima, along with 2′-hydroxyisoorientin (3), echioidinin 2′- O-β-D-(6″- O-acetyl) glucopyranoside (4), chrysoeriol (5), and diandraflavone A (6), reported for the first time from this species. Their structures were elucidated by spectroscopic analysis including 2D NMR, FAB-MS, and acidic hydrolysis.

scholarly journals Phenolic Constituents of Knautia arvensis Aerial Parts

2011 ◽  
Vol 6 (11) ◽  
pp. 1934578X1100601 ◽  
Author(s):  
Jaroslaw Moldoch ◽  
Barbara Szajwaj ◽  
Milena Masullo ◽  
Lukasz Pecio ◽  
Wieslaw Oleszek ◽  
...  
Keyword(s):  
Chlorogenic Acid ◽  
2D Nmr ◽  
Spectroscopic Methods ◽  
Flavone Glycoside ◽  
Aerial Parts ◽  
Dicaffeoylquinic Acid ◽  
Phenolic Constituents ◽  
First Time

A new C-6 flavone glycoside (6), together with seven known compounds, cryptochlorogenic acid (1), chlorogenic acid (2), 2- O- trans-caffeoylhydrocitric acid (3), isovitexin 7-β-D-glucopyranoside (4), 7,4′-dihydroxy-5-methoxyflavone-6- C-β-D-glucopyranoside (5), 3,5- O-dicaffeoylquinic acid (7) and 4,5- O-dicaffeoylquinic acid (8), were isolated from the aerial parts of Knautia arvensis. Their structures were elucidated by extensive spectroscopic methods including 1D- (1H, 13C and TOCSY) and 2D-NMR (DQF-COSY, HSQC, HMBC) experiments, as well as ESIMS analysis. Compounds 1, 3-5 and 8 are reported for the first time in Knautia arvensis.

scholarly journals Identification of Isolated Flavonoid Glycoside From Methanolic Extract of Cucumis dipsaceus Ehrenb. (Fruit)

2018 ◽  
Vol 9 (07) ◽  
Author(s):  
Suman Lata E. ◽  
Sanjiv Kumar Mittal
Keyword(s):  
Visible Light ◽  
Ethyl Acetate ◽  
Methanolic Extract ◽  
2D Nmr ◽  
Flavonoid Glycoside ◽  
Polyphenolic Compounds ◽  
Flavonoid Glycosides ◽  
Tlc Plates ◽  
Rf Values ◽  
First Time

The present study was objected to investigate isolated flavonoid glycoside from methanolic extract from fruits (Cucumis dipsaceus Ehrenb.) as well as identification. Methanolic extract was already screened for the presence of flavonoid glycoside which was strong antioxidant and hepatoprotective agent. It was first time to isolate these by column chromatography with increasing polarity like Petroleum ether, Chloroform, Ethyl acetate and Methanol solvents of different ratios. Each 20ml elute was collected, analyzed with pre coated Merck F254 TLC plates to compare similar spots and Rf values for same category of contents. The similar elutes were pooled, concentrated dried by vacuum distillation with rotary apparatus. The chloroform ethyl acetate fractions (sticky dark brown mass) were analyzed by pre coated F254 TLC plates and then visualized under visible light, UV 254nm and UV366nm. The developed pre coated TLC plates was further derivatized with 0.5% solution of anisaldehyde - H2SO4 acid and again visualized under visible light and UV366nm.TLC, HPTLC and LCMS methods were used to found and estimate polyphenolic compounds. Spectroscopic methods (IR, 1D and 2D NMR and Mass spectrometry) were used to confirm and elucidate the structure. The concluded structure of flavonoid glycosides was quercetin- 3-rutinoside-7-rhamnoside (M Wt: 756.663g/mol) and plaid with literature data

scholarly journals Two New Compounds from Paeonia lactiflora

2015 ◽  
Vol 10 (2) ◽  
pp. 1934578X1501000
Author(s):  
QingHu Wang ◽  
Nayintai Dai ◽  
Narenchaoketu Han ◽  
Wuliji Ao
Keyword(s):  
Ethanol Extract ◽  
2D Nmr ◽  
Diethyl Ester ◽  
Spectroscopic Methods ◽  
Paeonia Lactiflora ◽  
Esi Ms ◽  
Nmr Techniques ◽  
New Compounds

Two new compounds, namely 5-methyl-4,2′,3′,5′-tetrahydroxy-4′-methoxy-2-aldehyde biphenyl (1) and 1,8-dioxo-1,8-dihydropyrano[3,4-c]pyran-3,6-dicarboxyl acid, diethyl ester (2), were isolated from the 95% ethanol extract of the roots of Paeonia lactiflora Pall. The structures of 1 and 2 were elucidated by spectroscopic methods, including UV, IR, HR-ESI-MS and extensive 1D and 2D NMR techniques.

scholarly journals A New Rearranged Abietane Diterpene and other Constituents from Clerodendrum Philipinum

2009 ◽  
Vol 4 (3) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Ha Van Oanh ◽  
Pham Xuan Sinh ◽  
Nguyen Thai An ◽  
Ta Manh Hung ◽  
Tran Thi Lan Huong ◽  
...  
Keyword(s):  
Methanolic Extract ◽  
2D Nmr ◽  
Spectroscopic Methods ◽  
First Time

From the methanolic extract of the roots of Clerodendrum philipinum, a new rearranged abietane diterpene (1) and eight known compounds were isolated by various chromatography methods. Their structures were identified by means of spectroscopic methods, including 1D- and 2D-NMR, as 17(15→16),18(4→3)-bisabeo-11,12,14,16-tetrahydroxy-3,5,8,11, 13, 15-abietahexaen-7-one (1), binankadsurin A, clerodenoside A, martynoside, acteoside, isoacteoside, astragalin, β-sitosterol, and daucosterol. Binankadsurin A was found for the first time from a Clerodendrum species.

scholarly journals Pentacyclic Triterpenoids from Maytenus cuzcoina

2017 ◽  
Vol 12 (5) ◽  
pp. 1934578X1701200
Author(s):  
Carolina P. Reyes ◽  
Ignacio A. Jiménez ◽  
Isabel L. Bazzocchi
Keyword(s):  
2D Nmr ◽  
Bark Extract ◽  
Phytochemical Analysis ◽  
Spectroscopic Methods ◽  
Root Bark ◽  
Pentacyclic Triterpenoids ◽  
Isolation And Characterization ◽  
Nmr Techniques ◽  
First Time

Phytochemical analysis of the root bark extract of Maytenus cuzcoina (Celastraceae) led to the isolation and characterization of sixteen triterpenoids with a 6/6/6/6/6 pentacyclic system, including the new 22α-hydroxy-29-methoxy-3β-tetradecanoate-olean-12-ene, and 3β,24β-epoxy-29-methoxy-2α,3α,6α-trihydroxy- D:A-friedelane that is reported for the first time as a natural product. This is the first instance of the isolation of a tetradecanoate triterpene ester from a Celastraceae species. The structures were elucidated on the basis of spectrometric and spectroscopic methods, including 1D and 2D NMR techniques.

Sesquiterpenes and Flavonoid Aglycones from a Hungarian Taxon of the Achillea millefolium Group

2002 ◽  
Vol 57 (11-12) ◽  
pp. 976-982 ◽  
Author(s):  
Sabine Glasl ◽  
Pavel Mucaji ◽  
Ingrid Werner ◽  
Armin Presser ◽  
Johann Jurenitsch
Keyword(s):  
2D Nmr ◽  
The Other ◽  
Achillea Millefolium ◽  
Spectroscopic Methods ◽  
Nmr Studies ◽  
Flavonoid Aglycones ◽  
H Nmr ◽  
Nmr Data ◽  
First Time ◽  
C Nmr

The investigation of a dichloromethane extract of flower heads of a Hungarian taxon of the Achillea millefolium group led to the isolation of three flavonoid aglycones, one triterpene, one germacranolide and five guaianolides. Their structures were elucidated by UV-VIS, EI- and CI-MS, 1H NMR and 13C NMR spectroscopic methods as well as by 2D-NMR studies and by selective 1D-NOE experiments. Besides apigenin, luteolin and centaureidin, β-sitosterol, 3β-hydroxy-11α,13-dihydro-costunolide, desacetylmatricarin, leucodin, achillin, 8α-angeloxy-leucodin and 8α-angeloxy-achillin were isolated. Both latter substances are reported here for the first time. Their NMR data were compared with those of the other guaianolides. The stereochemistry of 3β-hydroxy-11α,13-dihydro-costunolide was discussed and compared with data of the literature.

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