Flavonoids from Ficaria verna Huds.

2002 ◽  
Vol 57 (5-6) ◽  
pp. 440-444 ◽  
Author(s):  
Michał Tomczyk ◽  
Jan Gudej ◽  
Marek Sochacki
Keyword(s):  
Spectroscopic Methods ◽  
H Nmr ◽  
Flavonoid Compounds ◽  
Phytochemical Investigation ◽  
C Nmr ◽  
Ficaria Verna

A phytochemical investigation of the flowers and leaves of Ficaria verna Huds. (Ranunculaceae) yielded four additional known flavonoid compounds including: kaempferol 3-O-β-ᴅ- (6ʺ-α-ʟ-rhamnopyranosyl)-glucopyranoside (nicotiflorin), apigenin 8-C-β-ᴅ-glucopyranoside (vitexin), luteolin 8-C-β-ᴅ-glucopyranoside (orientin) and apigenin 8-C-β-ᴅ-(2ʺ-O-β-ᴅ-glucopyranosyl)- glucopyranoside (flavosativaside). The characterisation of these compounds was achieved by various chromatographic and spectroscopic methods (UV, 1H NMR, 13C NMR and MS).

scholarly journals New Guaianolide-Type Sesquiterpene Lactones from Inula verbascifolia

2013 ◽  
Vol 68 (5-6) ◽  
pp. 175-180
Author(s):  
Abou El-Hamd H. Mohamed ◽  
Hosam-Eldin H. Mahmoud ◽  
Fathy F. Abdellatif ◽  
Yousif S. Mohamed ◽  
Ahmed A. Ahmed
Keyword(s):  
Sesquiterpene Lactones ◽  
Spectroscopic Methods ◽  
H Nmr ◽  
Aerial Parts ◽  
C Nmr

The aerial parts of Inula verbascifolia afforded two new guaianolide-type sesquiterpene lactones. Their structures were determined by spectroscopic methods (IR, MS, 1H NMR, 13C NMR, DEPT, 1H-1H COSY, HMQC, and HMBC).

scholarly journals Phytochemicals Screening and Chromatographic Separation of Bio Active Compound from the Roots of Berberis Lyceum

2019 ◽  
pp. 1-5
Author(s):  
Shakir Ullah ◽  
◽  
Inam Ullah ◽  
Robeena Naz ◽  
◽  
...  
Keyword(s):  
Chromatographic Separation ◽  
Research Work ◽  
Ethanol Extract ◽  
Spectroscopic Methods ◽  
H Nmr ◽  
Phytochemical Investigation ◽  
Isolated Compound ◽  
First Time ◽  
Berberis Lycium

In the present research work the phytochemical and Chromatographic separation of bio active compounds Berberis lycium occurred. Phytochemical investigation of the CH2 Cl2 /CH3 OH (1:1) extract ethanol of root shown the presence of terpenoids, flavonoids, saponins, anthraquinones and alkaloids, steroids and tannins was absent. Chromatographic separation of CH2 Cl2 /CH3 OH (1:1) root ethanol extract yielded methyl 9, 10-dihydro-3, 8-hydroxy-6-methyl-9, 10-dioxoanthracene-2- carboxylate, isolated for the first time from the species of Berberis lycium. With the help of spectroscopic methods (IR, 1 H NMR, 13C NMR, and DEPT-135 and UV-Vis,) Partial characterization of the isolated compound was done.

A new ent-kaurane from the root extract of Chiococcaalba

1997 ◽  
Vol 75 (6) ◽  
pp. 801-804 ◽  
Author(s):  
Rocío Borges-Argáez ◽  
Leticia Medina-Baizabál ◽  
Filogonio May-Pat ◽  
Luis M. Peña-Rodríguez
Keyword(s):  
Antimicrobial Activity ◽  
Medicinal Plants ◽  
Crude Extract ◽  
Chemical Shifts ◽  
Root Extract ◽  
Spectroscopic Methods ◽  
Chemical Transformations ◽  
Bioactive Metabolite ◽  
H Nmr ◽  
C Nmr

A bioassay-guided purification of the methanolic crude extract obtained from the roots of Chiococcaalba (L.) Hitchc. resulted in the isolation of a new, bioactive, metabolite identified as ent-17-hydroxy-16α-kauran-3-one (1). Elucidation of the new structure was based on analyses of the results obtained from various spectroscopic methods (IR, MS, 1H NMR, and 13C NMR) and chemical transformations. The stereochemistry at C16 was assigned by comparing both the proton and carbon chemical shifts of C17 with those reported in the literature. The new kaurane showed weak antimicrobial activity when tested against Staphylococcusaureus. Keywords: medicinal plants, Chiococcaalba, Rubiaceae, kaurane, diterpene, antimicrobial.

Synthesis of 2-amino-8-benzylidene-4-phenyl-3,4,5,6,7,8-hexahydro- and -5,6,7,8-tetrahydroquinazoline derivatives

1985 ◽  
Vol 50 (7) ◽  
pp. 1602-1610 ◽  
Author(s):  
József Deli ◽  
Tamás Lóránd ◽  
Dezsö Szabó ◽  
András Földesi ◽  
Adolf Zschunke
Keyword(s):  
Spectroscopic Methods ◽  
H Nmr ◽  
C Nmr

Base-catalyzed reaction of 2,6-dibenzylidenecyclohexanone and alkylguanidines gave 2-alkylamino-8-benzylidene-4-phenyl-3,4,5,6,7,8-hexahydroquinazolines IVa-c, which were oxidized to 2-alkylamino-8-benzylidene-4-phenyl-5,6,7,8-tetrahydroquinazolines Va-c. The acylamino (VIa-c, VIIa-d, IXa,b) and diacylamino derivatives (VIIIa,b) of the 2-amino-8-benzylidene-4-pheny]-3,4,5,6,7,8-hexahydroquinazoline (II), 2-amino-8-benzylidene-4-phenyl-5,6,7,8-tetrahydroquinazoline (III) and compounds Va-c have also been prepared. These compounds having the E-configuration were converted into the Z isomers XIIa-e by photoisomerization. The structures were confirmed by spectroscopic methods (IR, 1H NMR, 13C NMR).

Isolation and Structure Determination of Three New Sesquiterpenoids from Achillea millefolium

2012 ◽  
Vol 67 (5) ◽  
pp. 421-425 ◽  
Author(s):  
Umar Farooq ◽  
Afsar Khan ◽  
Saleha Suleman Khan ◽  
Shazia Iqbal ◽  
Rizwana Sarwar ◽  
...  
Keyword(s):  
Sesquiterpene Lactone ◽  
2D Nmr ◽  
Achillea Millefolium ◽  
Two Dimensional ◽  
H Nmr ◽  
Whole Plant ◽  
Phytochemical Investigation ◽  
Nmr Techniques ◽  
C Nmr

Phytochemical investigation of the whole plant of Achillea millefolium led to the isolation of three new sesquiterpenes which were trivially named as sesquiterpene lactone-esters A and B (1 and 2), and sesquiterpene lactone-diol (3). The structures of these compounds were determined with the help of one- and two-dimensional (1D and 2D) NMR techniques including 1H NMR, 13C NMR, HMQC, HMBC, COSY, and NOESY experiments.

Synthesis, Characterization and Photophysicochemical Properties of Zinc(Ii) Phthalocyanine With New Benzenesulfonamide Derivative Substituents

2021 ◽  
Author(s):  
Gülen Atiye Öncül ◽  
Ömer Faruk Öztürk ◽  
Mehmet Pişkin
Keyword(s):  
Elemental Analysis ◽  
Mass Spectra ◽  
Spectroscopic Methods ◽  
H Nmr ◽  
Maldi Tof Mass Spectra ◽  
New Type ◽  
Ft Ir ◽  
Photochemical Properties ◽  
Photocatalytic Applications ◽  
C Nmr

Abstract Novel (E)-4-((5-bromo-2-hydroxy-3-methoxybenzylidene)amino)-N-(pyridin-2-yl)benzenesulfonamide 1, (E)-4-((5-bromo-2-(3,4-dicyanophenoxy)-3-methoxybenzylidene)amino)-N-(pyridin-2-yl)benzene sulfonamide 2 and 2(3),9(10),16(17),23(24)-tetra-[(E)-4-((5-bromo-3-methoxy-2-(λ1-oxidanyl)benzyl idene)amino)-N-(pyridine-2-yl)benzenesulfonamide]phthalocyaninato zinc(II) phthalocyanine 3 were synthesized. Their (1-3) structures were illuminated with spectroscopic methods such as FT-IR, 1H NMR,13C NMR, UV–vis, MALDI-TOF mass spectra and also elemental analysis. The spectroscopic, photophysical and photochemical properties of the zinc(II) phthalocyanine 3 were investigated in dimethyl sulfoxide and its effects on the above mentioned properties were reported as a result of containing new type benzenesulfonamide derivatives as substituents. In addition, its above-mentioned properties were reported by comparing different species with those of their substituted and/or unsubstituted counterparts. The zinc(II) phthalocyanine 3 has photosensitizing abilities suitable and sufficient especially for photocatalytic applications.

scholarly journals Two New Sesquiterpene Lactone-esters from Achillea vermicularis

2008 ◽  
Vol 3 (11) ◽  
pp. 1934578X0800301
Author(s):  
Umar Farooq ◽  
Afsar Khan ◽  
Viqar Uddin Ahmad ◽  
Azhar-ul-Haq ◽  
Robina Farooq ◽  
...  
Keyword(s):  
Sesquiterpene Lactone ◽  
2D Nmr ◽  
Two Dimensional ◽  
H Nmr ◽  
Whole Plant ◽  
Phytochemical Investigation ◽  
Nmr Techniques ◽  
C Nmr

Phytochemical investigation of the whole plant of Achillea vermicularis led to the isolation of two new sesquiterpene lactone-esters, vermicularon A and B (1–2). The structures of these compounds were determined primarily with the help of one- and two-dimensional (1D and 2D) NMR techniques, including 1H NMR, 13C NMR, HMQC, and HMBC experiments.

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 A Phytochemical Investigation of Zanthoxylum setulosum

2011 ◽  
Vol 6 (12) ◽  
pp. 1934578X1100601 ◽  
Author(s):  
Tameka M. Walker ◽  
Bernhard Vogler ◽  
Debra M. Moriarity ◽  
William A. Haber ◽  
William N. Setzer
Keyword(s):  
Costa Rica ◽  
Bark Extract ◽  
Spectroscopic Techniques ◽  
First Report ◽  
H Nmr ◽  
Phytochemical Investigation ◽  
Phytochemical Studies ◽  
Mcf 7 ◽  
C Nmr

The crude bark extract of Zanthoxylum setulosum from Monteverde, Costa Rica was notably cytotoxic (100% kill at 100 μg/mL) to MCF-7, MDA-MB-231, and MDA-MB-468 cells in vitro. Phytochemical studies of the bark extract revealed the triterpenoid lupeol, the lignan sesamin, the sesquiterpene sesquichamaenol, and the xanthone lichexanthone. This is the first report of the isolation of sesquichamaenol and lichexanthone from the bark extract of Z. setulosum. All structures were determined using NMR spectroscopic techniques (1H NMR and 13C NMR) and GCMS and by comparison with literature data. Lupeol proved to be the cytotoxic component of Z. setulosum bark.

Synthesis, characterization and photochemical properties of metallo porphyrazines substituted with alkyl linked carbazole, benzoazepine and phenothiazine moieties

2017 ◽  
Vol 21 (09) ◽  
pp. 599-610 ◽  
Author(s):  
Remziye Olgaç ◽  
Yasemin Baygu ◽  
Burak Yıldız ◽  
Yaşar Gök ◽  
Baybars Köksoy ◽  
...  
Keyword(s):  
Spectroscopic Methods ◽  
The Novel ◽  
Oxygen Generation ◽  
H Nmr ◽  
Singlet Oxygen Generation ◽  
One Step ◽  
Ft Ir ◽  
Photochemical Properties ◽  
C Nmr

Novel octa-phenotiazine, octa-benzoazepine and octa-carbazole substituted magnesium(II) (MgPz-I-III) and zinc(II) (ZnPz-I-III) porphyrazines were synthesized from 2,3-bis[6-(4a,10a-dihydro-phenothiazin-10-yl)-hexylsulfanyl]-but-2-enedinitrile (5), 2,3-bis [6-(4a,11a-dihydro-dibenzo[b,f]azepin-5-yl)-hexysulfan-yl]-but-2-enedinitrile (8) and 2,3-bis(6-carbazol-9-yl-hexylsulfanyl)-but-2-enedinitrile (10), respectively. These dinitrile derivatives 5, 8 and 10 were also prepared by the reaction of 1,2-dicyano-1,2-ethylenedithiolate di-sodium salt (4) with 10-(6-bromohexyl)-10H-phenothiazine (3), 5-(6-bromohexyl)-5H-diben-zo[b,f]azepine (7) and 9-(6-bromo-hexyl)-9H-carbazole (9), respectively. Porphyrazino-zinc(II) complexes were synthesized by one-step reaction using Zn(BuO)[Formula: see text] as a template agent. All the novel compounds were characterized by elemental analysis and different spectroscopic methods such as [Formula: see text]H NMR, [Formula: see text]C NMR, FT-IR, UV-Vis and mass. The photochemical properties including photodegradation and singlet oxygen generation for magnesium(II) and zinc (II) porphyrazine complexes were studied in dimethylsulfoxide solutions for determination of their photosensitizer behaviors.

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