scholarly journals Phytochemical and Biological Activity Studies of the Bhutanese Medicinal Plant Corydalis crispa

2012 ◽  
Vol 7 (5) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Phurpa Wangchuk ◽  
Paul A. Keller ◽  
Stephen G. Pyne ◽  
Thanapat Sastraruji ◽  
Malai Taweechotipatr ◽  
...  
Keyword(s):  
Antimalarial Activity ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Multidrug Resistant ◽  
Scientific Basis ◽  
Phytochemical Study ◽  
Nmr Data ◽  
Tnf Α ◽  
First Time ◽  
Multidrug Resistant Strain

The chemical constituents and biological activities of Corydalis crispa (Fumariaceae) were investigated for the first time. The phytochemical study resulted in the isolation of nine known isoquinoline alkaloids: protopine (1), 13-oxoprotopine (2), 13-oxocryptopine (3), stylopine (4), coreximine (5), rheagenine (6), ochrobirine (7), sibiricine (8) and bicuculline (9), with complete NMR data for 2 and 3 provided here for the first time. Crude extracts exhibited significant anti-inflammatory (p<0.01) activity against TNF- α production in LPS activated THP-1 cells. The acetylcholinesterase inhibitory activity of compounds 2, 4 and 7 and the antiplasmodial activity of compound 5 against P. falciparum strains TM4/8.2 and K1CB1 (multidrug resistant strain) are reported here for the first time. Stylopine (4) did not show antimalarial activity against the K1CB1 strain in contrast to a previous report. This study generated a scientific basis for the use of this plant in Bhutanese traditional medicine, either individually or in combination with other medicinal ingredients to treat a broad range of disorders. This study also identified compound 5 as potential new antimalarial lead compound.

scholarly journals Chemical Constituents and Biological Activities of the Aerial Parts of Cyperus rotundus (Cypereaceae)

2021 ◽  
Vol 33 (8) ◽  
pp. 1935-1940
Author(s):  
Abdoulaye Hamidou ◽  
Jean Momeni ◽  
Isaac Silvère Gade ◽  
Alfred Ngenge Tamfu ◽  
Emmanuel Talla ◽  
...  
Keyword(s):  
Biological Activities ◽  
Chemical Constituents ◽  
2D Nmr ◽  
Cyperus Rotundus ◽  
Antidiabetic Activity ◽  
Phytochemical Study ◽  
Antioxidant Power ◽  
Aerial Parts ◽  
Ferric Reducing Antioxidant Power ◽  
First Time

The present study reports the chemical constituents, antioxidant, anticonvulsant and α-amylase activities of the aerial part of Cyperus rotundus collected in Cameroon. Phytochemical study leads to the isolation of six known compounds alongwith lupeol (1), stigmasterol (2), tetracosanoic acid (3), a mixture of β-sitosterol (4a) and stigmasterol (4b), ursolic acid (5) and saikogenin F (6). Compounds 3, 5 and 6 were isolated for the first time from this species. The structures of these compounds were determined using spectroscopic analysis including 1D and 2D NMR, mass spectrometry and comparison with the literature data. Biological activities carried out on the extracts showed that the methanol extract exhibited good antiradical scavenging activity against DPPH radical (IC50 = 2.873 μg/mL) and very good ferric reducing antioxidant power (FRAP) (IC50 = 7.535 μg/mL). It appeared that the mixture of hexane and ethyl acetate extract at the dose 100 mg/kg protected 66% of mice against convulsion induced by the pentylenetetrazol and 50% of protection when using picrotoxin at the same dose. All the extracts and compounds from this plant showed no inhibition against α-amylase related to antidiabetic activity.

scholarly journals Antifungal Activity of Chemical Constituents from Piper pesaresanum C. DC. and Derivatives against Phytopathogen Fungi of Cocoa

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3256
Author(s):  
Luis C. Chitiva-Chitiva ◽  
Cristóbal Ladino-Vargas ◽  
Luis E. Cuca-Suárez ◽  
Juliet A. Prieto-Rodríguez ◽  
Oscar J. Patiño-Ladino
Keyword(s):  
Antifungal Activity ◽  
Benzoic Acid ◽  
Chemical Constituents ◽  
Chemical Study ◽  
Positive Control ◽  
Positive Influence ◽  
Phytopathogenic Fungi ◽  
Phytochemical Study ◽  
Benzoic Acid Derivatives ◽  
First Time

In this study, the antifungal potential of chemical constituents from Piper pesaresanum and some synthesized derivatives was determined against three phytopathogenic fungi associated with the cocoa crop. The methodology included the phytochemical study on the aerial part of P. pesaresanum, the synthesis of some derivatives and the evaluation of the antifungal activity against the fungi Moniliophthora roreri, Fusarium solani and Phytophthora sp. The chemical study allowed the isolation of three benzoic acid derivatives (1–3), one dihydrochalcone (4) and a mixture of sterols (5–7). Seven derivatives (8–14) were synthesized from the main constituents, of which compounds 9, 10, 12 and 14 are reported for the first time. Benzoic acid derivatives showed strong antifungal activity against M. roreri, of which 11 (3.0 ± 0.8 µM) was the most active compound with an IC50 lower compared with positive control Mancozeb® (4.9 ± 0.4 µM). Dihydrochalcones and acid derivatives were active against F. solani and Phytophthora sp., of which 3 (32.5 ± 3.3 µM) and 4 (26.7 ± 5.3 µM) were the most active compounds, respectively. The preliminary structure–activity relationship allowed us to establish that prenylated chains and the carboxyl group are important in the antifungal activity of benzoic acid derivatives. Likewise, a positive influence of the carbonyl group on the antifungal activity for dihydrochalcones was deduced.

scholarly journals Chemical Constituents of Eupatorium japonicum and Anti-Inflammatory, Cytotoxic, and Apoptotic Activities of Eupatoriopicrin on Cancer Stem Cells

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Minh Giang Phan ◽  
Thi Thao Do ◽  
Thi Nga Nguyen ◽  
Thi Viet Huong Do ◽  
Ngoc Phuc Dong ◽  
...  
Keyword(s):  
Anticancer Agents ◽  
Human Cancer ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Sesquiterpene Lactones ◽  
No Production ◽  
Bioactive Constituents ◽  
Anti Inflammatory ◽  
First Time ◽  
Eupatorium Japonicum

Eupatorium japonicum Thunb. of the plant family Asteraceae is a popular traditional herb in Vietnam. However, its chemical constituents as well as bioactive principles have not been investigated yet. We investigated the phytochemistry of E. japonicum in Vietnam and isolated seventeen compounds (1–17) including phytosterols, terpenoids, phenolic acids, flavonoids, fatty alcohols, and fatty acids. They were structurally determined by MS and NMR analysis. Except for compounds 6 and 12, all the other compounds were identified for the first time from E. japonicum. Since many sesquiterpene lactones with α-methylene γ-lactone ring are reported as anti-inflammatory and anticancer agents, eupatoriopicrin (10), 1-hydroxy-8-(4,5-dihydroxytigloyloxy)eudesma-4(15),11(13)-dien-6,12-olide (11) were selected among the isolates for biological assays. Compound 10 was identified as the main bioactive sesquiterpene lactone of E. japonicum showing its potent anti-inflammatory and cytotoxic activity through inhibiting NO production and the growth of HepG2 and MCF-7 human cancer cell lines. For the first time, eupatoriopicrin (10) was demonstrated to strongly inhibit NTERA-2 human cancer stem cell (CSC) line in vitro. It is noticeable that the cytotoxicity of eupatoriopicrin against NTERA-2 cells is mediated by its apoptosis-inducing capability of 10 as demonstrated by the results of Hoechst 33342 staining, flow cytometry apoptosis analysis, and caspase-3 activity assays. The biological activities of the main bioactive constituents 1–7, 10, 12, and 15 supported the reported anti-inflammatory and anticancer properties of extracts from E. japonicum.

scholarly journals Chemical Constituents of Dendrobium venustum and their Antimalarial and Anti-herpetic Properties

2014 ◽  
Vol 9 (6) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Prapapun Sukphan ◽  
Boonchoo Sritularak ◽  
Wanwimon Mekboonsonglarp ◽  
Vimolmas Lipipun ◽  
Kittisak Likhitwitayawuid
Keyword(s):  
High Selectivity ◽  
Antimalarial Activity ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Selectivity Index ◽  
Moderate Activity ◽  
Meoh Extract ◽  
Whole Plant ◽  
Weak Activity ◽  
Simplex Virus

A MeOH extract from the whole plant Dendrobium venustum exhibited significant antimalarial and anti-herpetic activities. Bioassay-guided isolation of the plant extract resulted in the isolation of seven known phenolic compounds. Densiflorol B (3) and phoyunnanin E (6) showed the strongest antimalarial activity and a high selectivity index, whereas gigantol (2), batatasin III (5) and phoyunnanin C (7) exhibited moderate activity. Compounds 2 and 5 also showed weak activity against the Herpes simplex virus. This study is the first report on the chemical and biological activities of D. venustum.

scholarly journals Rapid Characterizaiton of Chemical Constituents of the Tubers of Gymnadenia conopsea by UPLC–Orbitrap–MS/MS Analysis

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 898
Author(s):  
Xin Wang ◽  
Xiang-Jian Zhong ◽  
Na Zhou ◽  
Ning Cai ◽  
Jia-Hui Xu ◽  
...  
Keyword(s):  
Phenolic Acid ◽  
High Performance ◽  
Chemical Constituents ◽  
Scientific Basis ◽  
Negative Ion ◽  
Chemical Components ◽  
Gymnadenia Conopsea ◽  
Orbitrap Mass Spectrometer ◽  
First Time ◽  
Orbitrap Ms

Gymnadenia conopsea R. Br. is a traditional Tibetan medicinal plant that grows at altitudes above 3000 m, which is used to treat neurasthenia, asthma, coughs, and chronic hepatitis. However, a comprehensive configuration of the chemical profile of this plant has not been reported because of the complexity of its chemical constituents. In this study, a rapid and precise method based on ultra-high performance liquid chromatography (UPLC) combined with an Orbitrap mass spectrometer (UPLC–Orbitrap–MS/MS) was established in both positive- and negative-ion modes to rapidly identify various chemical components in the tubers of G. conopsea for the first time. Finally, a total of 91 compounds, including 17 succinic acid ester glycosides, 9 stilbenes, 6 phenanthrenes, 19 alkaloids, 11 terpenoids and steroids, 20 phenolic acid derivatives, and 9 others, were identified in the tubers of G. conopsea based on the accurate mass within 3 ppm error. Furthermore, many alkaloids, phenolic acid derivates, and terpenes were reported from G. conopsea for the first time. This rapid method provides an important scientific basis for further study on the cultivation, clinical application, and functional food of G. conopsea.

scholarly journals Chemical Constituents and Antioxidant and Biological Activities of the Essential Oil from Leaves of Solanum spirale

2012 ◽  
Vol 7 (7) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Sukanya Keawsa-ard ◽  
Boonsom Liawruangrath ◽  
Saisunee Liawruangrath ◽  
Aphiwat Teerawutgulrag ◽  
Stephen G. Pyne
Keyword(s):  
Antioxidant Activity ◽  
Essential Oil ◽  
Biological Activities ◽  
Chemical Constituents ◽  
Radical Scavenging ◽  
Octadecanoic Acid ◽  
Small Cell Lung ◽  
Hexahydrofarnesyl Acetone ◽  
First Time ◽  
Mcf 7

The essential oil of the leaves Solanum spirale Roxb. was isolated by hydrodistillation and analyzed for the first time using GC and GC-MS. Thirty-nine constituents were identified, constituting 73.36% of the total chromatographical oil components. ( E)-Phytol (48.10%), n-hexadecanoic acid (7.34%), β-selinene (3.67%), α-selinene (2.74%), octadecanoic acid (2.12%) and hexahydrofarnesyl acetone (2.00%) were the major components of this oil. The antioxidant activity of the essential oil was evaluated by using the DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging assay. The oil exhibited week antioxidant activity with an IC50 of 41.89 mg/mL. The essential oil showed significant antibacterial activity against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus with MIC values of 43.0 μg/mL and 21.5 μg/mL, respectively. It also showed significant cytotoxicity against KB (oral cancer), MCF-7 (breast cancer) and NCI-H187 (small cell lung cancer) with the IC50 values of 26.42, 19.69, and 24.02 μg/mL, respectively.

scholarly journals Phytochemical Study of Stem and Leaf of Clausena lansium

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3124 ◽  
Author(s):  
Wenwen Peng ◽  
Xiaoxiang Fu ◽  
Yuyan Li ◽  
Zhonghua Xiong ◽  
Xugen Shi ◽  
...  
Keyword(s):  
Biological Activities ◽  
Healthcare Systems ◽  
Water Soluble ◽  
Phytochemical Analysis ◽  
Phytochemical Study ◽  
Spectroscopic Analyses ◽  
First Time ◽  
Local Healthcare ◽  
Carbazole Alkaloids ◽  
Aromatic Glycoside

Clausena lansium Lour. Skeels (Rutaceae) is widely distributed in South China and has historically been used as a traditional medicine in local healthcare systems. Although the characteristic components (carbazole alkaloids and coumarins) of C. lansium have been found to possess a wide variety of biological activities, little attention has been paid toward the other components of this plant. In the current study, phytochemical analysis of isolates from a water-soluble stem and leaf extract of C. lansium led to the identification of 12 compounds, including five aromatic glycosides, four sesquiterpene glycosides, two dihydrofuranocoumarin glycosides, and one adenosine. All compounds were isolated for the first time from the genus Clausena, including a new aromatic glycoside (1), a new dihydrofuranocoumarin glycoside (6), and two new sesquiterpene glycosides (8 and 9). The phytochemical structures of the isolates were elucidated using spectroscopic analyses including NMR and MS. The existence of these compounds demonstrates the taxonomic significance of C. lansium in the genus Clausena and suggests that some glycosides from this plant probably play a role in the anticancer activity of C. lansium to some extent.

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.

Chemical Constituents of the Aerial Parts of Scutellaria lateriflora and their α-Glucosidase Inhibitory Activities

2012 ◽  
Vol 7 (4) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Minpei Kuroda ◽  
Katsura Iwabuchi ◽  
Yoshihiro Mimaki
Keyword(s):  
Methyl Ester ◽  
Chemical Constituents ◽  
Meoh Extract ◽  
Aerial Parts ◽  
Screening Experiments ◽  
Data Analyses ◽  
Nmr Data ◽  
Scutellaria Lateriflora ◽  
Inhibitory Activities ◽  
First Time

MeOH extracts of 37 herbs were tested in screening experiments for rat intestinal α-glucosidase. The MeOH extract of the aerial parts of Scutellaria lateriflora L. (Lamiaceae) significantly inhibited sucrase and maltase activities, using sucrose and maltase as the substrates. Enzyme inhibition guided-fractionation of the MeOH extract of S lateriflora resulted in the isolation of a new diterpene glucoside, deacetylajugarin-IV 18- O-β-D-glucopyranoside (1), along with 20 known phenolics (2-21). The structures of 1-21 were elucidated on the basis of MS and NMR data analyses. Baicalein (4) and baicalin (10), a glycoside of 4, showed moderate sucrase inhibitory activities at IC50 values of 14.9 and 36.3 μM, respectively, whereas luteolin (3), acteoside (16), leucosceptoside A (18), and isoacteoside (20) showed weak inhibitory activities at IC50 values of 811, 522, 727, and 443 μM, respectively. This is the first report on mammalian α-glucosidase inhibitory activities of S lateriflora extract and identification of the constituents responsible for the activities. Apigenin (2), luteolin (3), 6-methoxyluteolin 4'-methyl ether (6), isoscutellarin 8- O-β-D-glucuronide (7), luteolin 7- O-β-D-glucuronide (9), wogonin 7- O-β-D-glucuronide methyl ester (12), eriodictyol (13), naringenin (14), naringenin 7- O-β-D-glucuronide (15), jionoside D (17), leucosceptoside A (18), and (+)-syringaresinol 4'- O-β-D-glucopyranoside (21) were isolated from this plant for the first time. The inhibitory properties of S lateriflora extract against α-glucosidase provide a prospect for its antidiabetic usage.

scholarly journals Phenylpropanoids and Furanocoumarins as Antibacterial and Antimalarial Constituents of the Bhutanese Medicinal Plant Pleurospermum amabile

2014 ◽  
Vol 9 (7) ◽  
pp. 1934578X1400900
Author(s):  
Phurpa Wangchuk ◽  
Stephen G. Pyne ◽  
Paul A. Keller ◽  
Malai Taweechotipatr ◽  
Sumalee Kamchonwongpaisan
Keyword(s):  
Antibacterial Activity ◽  
Plasmodium Falciparum ◽  
Bacillus Subtilis ◽  
Medicinal Plant ◽  
Antimalarial Activity ◽  
Biological Activities ◽  
Multidrug Resistant ◽  
Scientific Data ◽  
Methyl Eugenol ◽  
Weak Antibacterial Activity

With the objective of determining safety and verifying the traditional uses of the Bhutanese medicinal plant, Pleurospermum amabile Craib & W. W. Smith, we investigated its crude extracts and the isolated phytochemicals for their biological activities. Four phenylpropanoids [( E)-isomyristicin (1), ( E)-isoapiol (2), methyl eugenol (3) and ( E)-isoelemicin (4)] and six furanocoumarins [psoralen (5), bergapten (6), isoimperatorin (7), isopimpinellin (8), oxypeucedanin hydrate (9) and oxypeucedanin methanolate (10)] were isolated from this plant. Among the test samples, compound 10 showed weak antibacterial activity against Bacillus subtilis and best antimalarial activity against the Plasmodium falciparum strains, TM4/8.2 (chloroquine and antifolate sensitive) and K1CB1 (multidrug resistant). None of the test samples showed cytotoxicity. This study generated scientific data that support the traditional medical uses of the plant.

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