scholarly journals PHENOLIC COMPOUNDS FROM CALLISTEMON CITRINUS LEAVES AND STEMS

2016 ◽  
Vol 54 (2) ◽  
pp. 190 ◽  
Author(s):  
Pham Ngoc Khanh ◽  
Ho Viet Đuc ◽  
Tran Thu Huong ◽  
Vu Thi Ha ◽  
Doan Thi Van ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Benzoic Acid ◽  
Protocatechuic Acid ◽  
2D Nmr ◽  
Chemical Investigation ◽  
Phytochemical Analysis ◽  
Methyl Gallate ◽  
Bioactive Constituents ◽  
Esi Ms ◽  
Benzoic Acid Derivatives

In the search for bioactive constituents from Vietnamese plants,  the leaves and stems of Callistemon citrinus (Curtis) Skeels were selected for chemical investigation. Phytochemical analysis of plant led to the isolation of eight phenolic compounds including two flavonoids (eucalyptine (1) and 8-demethyleucalyptine (2)), two alcohols (blumenol A (3), n-tetratriacontanol (4)), three benzoic acid derivatives (acid gallic (5), methyl gallate (6) protocatechuic acid (7)), one sterol (b-sitosterol (8)), and along with one sesquiterpene (2,6,10-bisabolatriene (9)). The structures of the natural compounds were determined by spectroscopic evidences including 1D- and 2D-NMR and ESI-MS.

Tannins and Flavonoids from the Erodium cicutarium Herb

2005 ◽  
Vol 60 (5) ◽  
pp. 555-560 ◽  
Author(s):  
Izabela Fecka ◽  
Wojciech Cisowski
Keyword(s):  
Phenolic Acids ◽  
2D Nmr ◽  
Methyl Gallate ◽  
Esi Ms ◽  
Chemical Structures ◽  
Erodium Cicutarium ◽  
Aerial Parts ◽  
Acid Methyl

A new depside, erodiol, was isolated and identified from the aerial parts of Erodium cicutarium (Geraniaceae), together with essential compounds such as: geraniin, didehydrogeraniin, corilagin, (-) 3-O-galloylshikimic acid, methyl gallate 3-O-β -D-glucopyranoside, rutin, hyperin, quercetin 3- O-(6”-O-galloyl)-β -D-galactopyranoside, isoquercitrin and simple phenolic acids. Their chemical structures were elucidated by means of spectroscopic (ESI MS, HRESI MS, 1D and 2D NMR) evidence.

scholarly journals A Novel Norclerodane Diterpenoid from the Roots of Croton crassifolius

2015 ◽  
Vol 10 (11) ◽  
pp. 1934578X1501001
Author(s):  
Zhan-Xin Zhang ◽  
Hui-Hong Li ◽  
Gai-Xia Fan ◽  
Zheng-Yu Li ◽  
Le-Le Dong ◽  
...  
Keyword(s):  
2D Nmr ◽  
Ring System ◽  
Chemical Investigation ◽  
Esi Ms ◽  
Chromene Ring

A chemical investigation of Croton crassifolius afforded a novel norclerodane diterpenoid (1) with an unprecedented six-membered oxygen ring between C-1 and C-12, together with three known compounds. The structure of the new compound was elucidated based on spectroscopic (IR, 1D, and 2D NMR) and HR-ESI-MS techniques. This report describes the first example of a natural norclerodane with a 4 H-chromene ring system.

ESTIMATION OF BIOACTIVE PHENOLIC COMPOUNDS OF ABIES PINDROW AERIAL PARTS USING TLC DENSITOMETRY

INDIAN DRUGS ◽  
2017 ◽  
Vol 54 (04) ◽  
pp. 32-37
Author(s):  
D. Kumar ◽  
S. Kumar ◽  
Keyword(s):  
Phenolic Compounds ◽  
Benzoic Acid ◽  
Gallic Acid ◽  
Protocatechuic Acid ◽  
Coumaric Acid ◽  
Aerial Parts ◽  
Ich Guidelines ◽  
Validation Parameters ◽  
Abies Pindrow ◽  
Solvent Systems

The present investigation was undertaken to estimate contents of bioactive phenolic compounds in A. pindrow aerial parts using TLC densitometry. Maltol, p-coumaric acid, p-hydroxy benzoic acid, protocatechuic acid and gallic acid were resolved in TLC of methanol extract of plant using solvent systems – chloroform:methanol (9.7:0.3; scanned at 276 nm), toluene:diethyl ether (1:1; scanned at 320 nm), chloroform:methanol:glacial acetic acid (19:1:1; scanned at 266 nm), chloroform:methanol:formic acid (9:1:1; scanned at 295 nm) and chloroform:methanol:acetonitrile: formic acid (12:3:3:2; scanned at 292), respectively. The developed methods for estimation of phenolic compounds in plant were validated as per ICH guidelines. The contents of maltol, p-coumaric acid, p-hydroxy benzoic acid, protocatechuic acid and gallic acid in plant were found to be 0.10280±0.00002, 0.00860±0.00000, 0.00780±0.00001, 0.10030±0.00003 and 0.06440±0.00002% w/w, respectively. On the basis of validation parameters, the developed TLC densitometric methods for estimation of phenolic compounds in the plant were found to precise, accurate and specific.

scholarly journals Anti-Inflammatory Constituents From Chaenomeles speciosa

2020 ◽  
Vol 15 (3) ◽  
pp. 1934578X2091369
Author(s):  
Liangliang Yao ◽  
Suyou Zhu ◽  
Ziyi Hu ◽  
Lin Chen ◽  
Muhammad Farrukh Nisar ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Benzoic Acid ◽  
Protocatechuic Acid ◽  
Mass Spectrometry Data ◽  
Coumaric Acid ◽  
Benzoic Acid Derivatives ◽  
Time Out ◽  
Phytochemical Investigation ◽  
Anti Inflammatory ◽  
First Time

Phytochemical investigation of fruits of Chaenomeles speciosa Lindley (Rosaceae) led to the isolation of 20 compounds including 5 flavonoids (1-5), 5 phenylpropanoids (6-10), 3 benzoic acid derivatives (11-13), 2 phloroglucinols (14 and 15), 2 purines (16 and 17), and 3 terpenoids (18–20). Their structures were elucidated by nuclear magnetic resonance analyses and from mass spectrometry data. These compounds were confirmed as catechin (1), epicatechin (2), catechin-5- O-β-d-glucoside (3), procyanidin B1 (4), quercetin-3- O-β-d-glucoside (5), p-coumaric acid (6), ferulic acid (7), caffeic alcohol (8), 1- O-p-coumaroyl-β-d-glucose (9), 1- O-cinnamoyl-β-d-glucose (10), p-hydroxybenzonic acid (11), protocatechuic acid (12), benzoic acid-β-d-gentiobioside (13), phloracetophenone 4′-glucoside (14), 3,5-dihydroxyphenyl β-d-glucopyranoside (15), adenine (16), adenosine (17), betulalbuside A (18), vomifoliol (19), and roseoside (20). Compounds 3-5, 8, 10, and 13-18 were isolated from the genus Chaenomeles and C. speciosa for the first time. Out of all these, compound 17 showed the best anti-inflammatory properties, comparable with those of the already known minocycline.

scholarly journals New Rocaglamide Derivatives from Vietnamese Aglaia species

2014 ◽  
Vol 9 (6) ◽  
pp. 1934578X1400900
Author(s):  
Ngoc Tu Duong ◽  
RuAngelie Edrada-Ebel ◽  
Rainer Ebel ◽  
Wenhan Lin ◽  
Anh Tuan Duong ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Insecticidal Activity ◽  
Spodoptera Littoralis ◽  
2D Nmr ◽  
Mass Spectrometric ◽  
Phytochemical Analysis ◽  
2D Nmr Spectroscopy ◽  
Esi Ms

Phytochemical analysis of the leaves of different Aglaia species collected in Vietnam yielded eight rocaglamide derivatives, which are responsible for the strong insecticidal activity against Spodoptera littoralis, including rocaglamide A (1), rocaglamide I (2), rocaglamide W (3), rocaglamide AB (4), rocaglamide J (5), rocaglaol (6), rocaglamide S (7) and the new rocaglamide AY (8). The structures of these compounds were elucidated through extensive 1D and 2D NMR spectroscopy and analysis of their mass spectrometric (ESI-MS) and HRESIMS data.

THE ROLE OF PHLORIDZIN IN THE HOST-PARASITE PHYSIOLOGY OF THE APPLE SCAB DISEASE

1961 ◽  
Vol 7 (4) ◽  
pp. 525-534 ◽  
Author(s):  
E. H. Barnes ◽  
E. B. Williams
Keyword(s):  
Phenolic Compounds ◽  
Benzoic Acid ◽  
Protocatechuic Acid ◽  
Venturia Inaequalis ◽  
Apple Scab ◽  
Breakdown Product ◽  
Stimulatory Action ◽  
Apple Leaves ◽  
Host Parasite

A stimulating substance in apple leaves which enhances the growth of Venturia inaequalis (Cke.) Wint. was identified as phloridzin. The metabolism of this compound to phloretin, phloroglucinol, p-hydroxyphenyl propionic acid, p-hydrox-y benzoic acid, and protocatechuic acid is hypothesized on the presence of phloretin and phloroglucinol in the culture filtrates of V. inaequalis when it is grown in the presence of phloridzin. The only breakdown product which stimulated the parasite was p-hydroxyphenylpropionic acid and it is concluded that its utilization by V. inaequalis may be the basis for the stimulatory action of phloridzin.The effect of these compounds and m-inositol on the growth and sporulation of V. inaequalis was studied. All of the compounds induced resistant reactions in the 384-1 selection but not in the Geneva variety. This may represent a specificity of the host to the action of these chemicals, indicating that they are correlated with the specificity of the host to races of V. inaequalis. Preliminary studies on the effects of these compounds on the metabolism of the host indicated that new phenolic compounds are produced.

scholarly journals A review on Medicago sativa: A potential medicinal plant

2021 ◽  
Vol 1 (2) ◽  
pp. 022-033
Author(s):  
Ali Esmail Al-Snafi ◽  
Hanaa Salman Khadem ◽  
Hussein Ali Al-Saedy ◽  
Ali M. Alqahtani ◽  
Gaber El-Saber Batiha ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Medicago Sativa ◽  
Nutritional Supplement ◽  
Phytochemical Analysis ◽  
Health Food ◽  
Bioactive Constituents ◽  
Food Stores ◽  
Anti Cancer ◽  
Oxidase Inhibition ◽  
Xanthine Oxidase Inhibition

Medicago sativa (Family: Fabaceae) was used traditionally for the treatment of arthritis, kidney problems, fever, as diuretic, anti-cancer, anti-rheumatic, cardiotonic, depurative, lactagogue, emmenagogue, antiscorbutic and in the treatment of boils. Leaves and sprouts were also consumed as vegetable salad. The leaves or seeds were sold as bulk powdered herb, capsules, and tablets for nutritional supplement in health food stores. The phytochemical analysis of Medicago sativashowed the presence of proteins, carbohydrates, saponins, lignin, phenolic compounds, tannins, alkaloids triterpene glycosides, carotenoids, sterols, phytoestrogens, flavones, isoflavonoids and phenolic compounds. The previous pharmacological investigation showed that the plant possessed antioxidant, antidiabetic, reproductive, anti-inflammatory, antimicrobial, dermatological, anxiolytic, hepatoprotective, neuroprotective, immunological, cardioprotective, cytotoxic, anti-scorbutic, anti-anemic, xanthine oxidase inhibition and many other pharmacological effects. The current review discussed the bioactive constituents and pharmacological activities of Medicago sativa.

PHENOLIC COMPOUNDS IN FERNS: I. A SURVEY OF SOME FERNS FOR CINNAMIC ACID AND BENZOIC ACID DERIVATIVES

1967 ◽  
Vol 45 (5) ◽  
pp. 585-593 ◽  
Author(s):  
Bruce A. Bohm ◽  
Rolla M. Tryon
Keyword(s):  
Phenolic Compounds ◽  
Protocatechuic Acid ◽  
Sinapic Acid ◽  
Syringic Acid ◽  
Hydroxybenzoic Acid ◽  
Benzoic Acids ◽  
Coumaric Acid ◽  
Cinnamic Acids ◽  
Benzoic Acid Derivatives ◽  
Dennstaedtia Punctilobula

Forty-six ferns, representing 28 genera and 8 families, were examined for hydroxylated cinnamic acids and benzoic acids. In most plants examined the "basic complement" of cinnamic acids, p-coumaric, caffeic, and ferulic, was present. In these plants p-hydroxybenzoic acid, protocatechuic acid, and vanillic acid were generally also present. Of much more limited distribution were sinapic acid, syringic acid, and o-coumaric acid. Coumarin was shown to be present in Dennstaedtia punctilobula, the only fern tested which possessed this type of compound. The data available from three ferns reported in the literature are also included in this survey; one represents an additional family and one represents an additional genus.An experiment with DL-phenylalanine-1-14C and DL-phenylalanine-3-14C and Cyathea arborea showed the incorporation of label into p-coumaric acid, caffeic acid, and ferulic acid.

scholarly journals Phytochemical analysis of Cynara scolymus L. cultivated in Mongolia

2014 ◽  
Vol 15 ◽  
pp. 40-42 ◽  
Author(s):  
N Tsevegsuren ◽  
G Davaakhuu ◽  
Ts Udval
Keyword(s):  
Phenolic Compounds ◽  
Vitamin C ◽  
Total Phenolic ◽  
Phytochemical Analysis ◽  
Total Phenolic Compounds ◽  
Bioactive Constituents ◽  
Total Proteins ◽  
Cynara Scolymus ◽  
Plant Parts ◽  
Phytochemical Composition

Cynara scolymus L. (Artichoke) is a traditionally consumed vegetable in many countries. In Mongolia, this plant has been successfully cultivated during the last years. The present study is an attempt to investigate the phytochemical composition of C.scolymus L. The result reveals the presence of bioactive constituents comprising flavonoids, total phenolic compounds, saponins and total proteins, carbohydrates, lipids and vitamin C in plant parts. The presence of these phytochemicals can be correlated with the medicinal potential of this plant.DOI: http://doi.dx.org/10.5564/mjc.v15i0.320Mongolian Journal of Chemistry 15 (41), 2014, p40-42

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