scholarly journals Triterpenoids Isolated from Stem Bark of Glochidion lanceolarium (Roxb.), Voigt

2021 ◽  
Vol 18 (1) ◽  
pp. 13-18
Author(s):  
Selina Kabir ◽  
Mohammad Rashedul Haque ◽  
Abdullah Mohammad Sarwaruddin Chowdhury ◽  
Mohammad Abdur Rashid ◽  
Choudhury Mahmood Hasan
Keyword(s):  
Stem Bark ◽  
Chemical Investigation ◽  
Spectroscopic Methods ◽  
Aerial Parts ◽  
Isolation And Characterization ◽  
Phytochemical Investigation ◽  
Organic Extracts

This paper presents the chemical investigation of the stem barks of Glochidion lanceolarium (Roxb.) Voigt, Euphorbiaceae. Classic phytochemical investigation of organic extracts of the aerial parts of Glochidion lanceolarium together with spectroscopic methods led to the isolation and characterization of three triterpenes, namely Epilupeol (1) Glochidonol (2), Glochidone (3). Journal of Science Foundation, January 2020;18(1):13-18

scholarly journals 4-Hydroxy-trans-cinnamate Derivatives and Triterpene from Barleria cristata

2014 ◽  
Vol 12 (2) ◽  
pp. 143-145 ◽  
Author(s):  
Nipa Chowdhury ◽  
Abdullah Al Hasan ◽  
Fakir Shahidullah Tareq ◽  
Monira Ahsan ◽  
ATM Zafrul Azam
Keyword(s):  
Medicinal Plant ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Spectroscopic Methods ◽  
Isolation And Characterization ◽  
Phytochemical Investigation ◽  
Organic Extracts ◽  
Whole Plants ◽  
Important Medicinal Plant

Barleria cristata is an important medicinal plant of Bangladesh. Many compounds of diverse biological activities were isolated from different Barleria species, including irridoids, flavonoids and phenylethanoid derivatives in addition to other groups of chemical constituents. This paper presents the chemical investigation of the whole plants of B.cristata. Classic phytochemical investigation of organic extracts of the whole plants of B. cristata together with spectroscopic methods led to the isolation and characterization of 4-hydroxy-trans-cinnamate derivatives (1-3) and a triterpene, namely oleanolic acid (4). Dhaka Univ. J. Pharm. Sci. 12(2): 143-145, 2013 (December) DOI: http://dx.doi.org/10.3329/dujps.v12i2.17623

Semiquinol and phenol compounds from seven Senecio species

2011 ◽  
Vol 65 (1) ◽  
Author(s):  
Boris Mandić ◽  
Dejan Gođevac ◽  
Ljubodrag Vujisić ◽  
Snežana Trifunović ◽  
Vele Tesević ◽  
...  
Keyword(s):  
Spectroscopic Studies ◽  
1H And 13C Nmr ◽  
Serbia And Montenegro ◽  
Phenol Compounds ◽  
Aerial Parts ◽  
Isolation And Characterization ◽  
Phytochemical Investigation ◽  
Compound Ii ◽  
Tof Ms

AbstractIn this paper, examination of the aerial parts of seven Senecio species from Serbia and Montenegro is reported. Phytochemical investigation of Senecio erucifolius led to the isolation and characterization of semiquinol butyl 2-(1-hydroxy-4-oxocyclohexa-2,5-dienyl)acetate (I), along with methyl 2-(1-hydroxy-4-oxocyclohexa-2,5-dienyl)acetate (jacaranone, II), and methyl 2-(4-hidroxyphenyl)acetate (III). The structure of I was established based on spectroscopic studies (1H- and 13C-NMR, IR, and CI-MS). Compound II was also isolated from S. carpathicus and S. subalpinus. The presence of jacaranone in the methanol extracts of S. wagneri, S. othonnae, and S. paludosus was confirmed by LC/ESI-TOF MS.

Phytochemical Investigation, Isolation and Characterization of Coumarins from Aerial Parts and Roots of Tunisian Pituranthos chloranthus (Apiaceae)

2015 ◽  
Vol 5 (4) ◽  
pp. 237-243 ◽  
Author(s):  
Latifa Aloui ◽  
Mohamed Kossentini ◽  
Claude Geffroy-Rodier ◽  
Jérôme Guillard ◽  
Sami Zouari
Keyword(s):  
Aerial Parts ◽  
Isolation And Characterization ◽  
Phytochemical Investigation

scholarly journals Isolation and Characterization of Sesquiterpenes from Stem Bark of Warburgia ugandensis Sprague

2020 ◽  
Vol 9 (1) ◽  
pp. 39-46
Author(s):  
Teshome Gonfa Hordofa
Keyword(s):  
Medicinal Plants ◽  
Plant Species ◽  
Bioactive Compounds ◽  
Common Cold ◽  
Stem Bark ◽  
Spectroscopic Methods ◽  
Insufficient Information ◽  
Isolation And Characterization ◽  
Reported Data

Warburgia ugandensis Sprague is one of the medicinal plants traditionally used to treat a number of diseases like asthma, cough, diarrhea, common cold, stomachache and toothache in Ethiopia. However, there is still insufficient information on the isolation and evaluation of bioactive compounds from this plant species. Extraction, purification and isolation of the stem bark of this plant by dichloromethane and chloroform as solvents afforded two sesquiterpenes; namely, WU-1 (ugandensidial) and WU-2 (cinnamolide-3β-acetate) respectively. The structural elucidations of these bioactive compounds were accomplished by using a variety of spectroscopic methods (IR, UV and NMR). The spectroscopic results compared with the reported data in the literature.

scholarly journals Diterpenoid Alkaloids and Phenol Glycosides from Aconitum Naviculare (Brühl) Stapf

2008 ◽  
Vol 3 (12) ◽  
pp. 1934578X0800301 ◽  
Author(s):  
Stefano Dall'Acqua ◽  
Bharat B. Shrestha ◽  
Mohan Bikram Gewali ◽  
Pramod Kumar Jha ◽  
Maria Carrara ◽  
...  
Keyword(s):  
Human Tumor ◽  
2D Nmr ◽  
Diterpenoid Alkaloids ◽  
Human Tumor Cell Lines ◽  
Aerial Parts ◽  
Isolation And Characterization ◽  
Phytochemical Investigation ◽  
2D Nmr Spectra ◽  
Phenol Glycosides

Phytochemical investigation of the aerial parts of Aconitum naviculare, a medicinal plant used in traditional Nepalese medicine, led to the isolation and characterization of two new diterpenoid alkaloids, navirine B (1), and navirine C (2), along with (+) chellespontine (3), kaempferol-7-O-β-D-glucopyranosyl(1→3)α-L-rhamnopyranoside (4), kaempferol-7-O α-L-rhamnopyranoside,3-O-β-D-glucopyranoside (5), p-coumaric-4-O-β-D-glucopyranoside acid (6), and ferulic-4-O-β-D-glucopyranoside acid (7). The structures of the isolated compounds were elucidated on the basis of extensive analyses of 1D and 2D NMR spectra (HMQC, HMBC, COSY, ROESY) and HR-MS data. The antiproliferative activity of alkaloids 1–3 against human tumor cell lines (LoVo and 2008) was also evaluated.

scholarly journals Isolation and characterization of Stigmasta-7, 22-dien-3-ol (α-Spinasterol) from Entada africana stem bark crude extract

2019 ◽  
Vol 4 (3) ◽  
pp. 85
Author(s):  
A. Kwajia ◽  
H.M. Adamub ◽  
I.Y. Chindob
Keyword(s):  
Crude Extract ◽  
Spectroscopic Data ◽  
Soluble Fraction ◽  
Stem Bark ◽  
Literature Analysis ◽  
Bark Sample ◽  
Isolation And Characterization ◽  
Nmr Data ◽  
Phytochemical Investigation

The phytochemical  investigation of the stem bark extracts of Entada africana led to the isolation and characterization of Stigmasta-7,22-dien-3-ol from the dichloromethane soluble portion of acetone/methanol (1:1v/v) crude extract. The powdered stem bark sample of Entada africana was defatted with hexane and extracted with acetone/methanol (1:1v/v) mixture. The dichloromethane soluble fraction was purified on a low pressure column containing silica gel 60 (60-200 mesh). The purification afforded an isolate coded Enac3 (85 mg) with Rf value of 0.404 in hexane/ethyl acetate (4:1). The isolate was characterized using IR, NMR data and in comparison with literature. Analysis of spectroscopic data and literature comparison suggests Enac3 as stigmasta-7, 22-dien-3-ol. The isolation of stigmasta-7, 22-dien-3-ol from the stem bark of Entada africana suggests the presence of useful bioactive principles which could be exploited for medicinal purposes.

scholarly journals Isolation and characterization of aristolactam alkaloids from the stem bark of Goniothalamus velutinus (Airy Shaw) and their biological activities

2018 ◽  
Vol 30 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Erum Iqbal ◽  
Linda B.L. Lim ◽  
Kamariah Abu Salim ◽  
Shaheen Faizi ◽  
Ayaz Ahmed ◽  
...  
Keyword(s):  
Biological Activities ◽  
Stem Bark ◽  
Isolation And Characterization

scholarly journals Isolation and Characterization of Antimicrobial Compound from Stem Bark of Traditional Medicinal Plant Sonneratia apetala: Evaluation of their antimicrobial, Cytotoxic and Antioxidant Properties

2021 ◽  
Vol 38 (1) ◽  
pp. 1-5
Author(s):  
Md Arifur Rahman ◽  
Ahmed Abu Rus’d ◽  
Md Enamul Haque
Keyword(s):  
Brine Shrimp ◽  
Soluble Fraction ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Stem Bark ◽  
Chloroform Extract ◽  
Free Radical Scavenging ◽  
Gram Negative Bacteria ◽  
Isolation And Characterization

Sonneratia apetala (S. apetala) (Lythraceae) has been investigated for the isolation and characterization of antimicrobial compounds and evaluation of their biological activities. The chloroform extract of the stem bark and different partitionate of the chloroform extracts i.e. Petroleum ether soluble fraction (PESF), Ethyl acetate soluble fraction(EASF), Methanol soluble fraction(MSF) and aqueous soluble fractions (ASF) were subjected to different chromatographic techniques to isolate secondary metabolites. Successive chromatographic separation and purification yielded a total of two compounds identified and characterized as Taraxerone(1) and 5,8-dihydroxy- 6-methoxy-4,9-dioxo-1,3,4,9-tetrahydronaphthol[2,3-c]furan-1-yl acetate (2) by extensive proton NMR spectrum (1H-NMRspectrum) analysis. The different partitionate like PESF, EASF, MESF and ASF were subjected to screen their antimicrobial properties against some selected Gram positive and Gram negative bacteria and fungi, brine shrimp lethality and antioxidant activities. The maximum zone of inhibition of chloroform extract was found against Pseudomonas sp. (16mm). All fractions showed more activity against Gram negative bacteria then Gram positive bacteria. In the brine shrimp lethality bioassay, among all extracts, the petroleum ether and ethyl acetate soluble fraction showed significant lethality having the LC50 value of 7.72 μg/ml. The antioxidant activity was evaluated in terms of determination of free radical scavenging activity (DPPH assay). Among all the extracts of S. apetala the highest free radical scavenging activity showed by (Methanol soluble fraction) MESF with IC50 value 18.0 μg/ml. Bangladesh J Microbiol, Volume 38, Number 1, June 2021, pp 1-5

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