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Ursolic acid
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This study is the first report on antioxidant activities and chemical composition of S. cambodianum Baill. ethanolic leaf extract. The results showed that ethanolic extract had potent in vitro antioxidant activities in DPPH, ABTS•+ assays (the low concentrations of IC50 were 19.51 ± 0.78 μg/mL and 4.89 ± 0.07 μg/mL, respectively), and in RP, TAC methods (the Abs0.5 were 20.80 ± 0.26 μg/mL and 36.15 ± 1.03 μg/mL).
7p
dianmotminh02
03-05-2024
5
1
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This study would like to point out the potential compounds as inflammatory agents. Herein, we displayed the isolation and structural identification of thirteen compounds including ten flavonoids, one tannin, one triterpenoid, and one derivative of benzoic acid from the methanolic extract. Furthermore, all of them were evaluated the anti-inflammatory activity.
12p
dianmotminh02
03-05-2024
1
1
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In this paper, we present the isolation and structural elucidation of five known triterpenes from the stems and leaves of M. smilacifolium including, ursolic acid (1), uvaol (2), oleanolic (3), betulinic acid (4) and betulin (5) (Figure 1).
6p
vidoctorstrange
06-05-2023
5
1
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Eriobotrya angustissima Hook.F. (Son tra hep) belongs to the family Rosaceae. Its leaves were collected at National Garden Bi Dup in Lam dong province. The research showed that, many triterpenes are very difficult to be separated from each other so that they can be obtained only as acetylated products.
3p
vilexus
30-09-2022
6
3
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Bạch hoa xà thiệt thảo (Hedyotis diffusa Willd) là một loại dược liệu thiên nhiên thường được sử dụng trong các bài thuốc chủ trị các loại sưng đau do ung thư, các loại nhiễm trùng như nhiễm trùng đường tiểu, viêm hạnh nhân, viêm họng, viêm phế quản cấp và mãn tính, viêm ruột thừa, viêm gan thể vàng da và không vàng da cấp tính, rắn độc cắn...
11p
vistephenhawking
20-04-2022
19
3
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The essential oil, obtained from the aerial parts of the plant, exhibited high AChE inhibitory activity, consisting of mainly 1,8-cineol (58.89%). The antioxidant activity according to 6 complementary tests and anticholinesterase potential of the methanol extracts and triterpenoids α-amyryltetracosanoate, oleanolic acid, ursolic acid, and sitosterol acetate were also investigated, and methanol extract exhibited the highest antioxidant and anticholinesterase activity, surpassing the other tested extracts and pure compounds.
14p
langthannam
29-12-2021
12
0
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Obesity is a serious disease that can be due to genetic and environmental reasons and is defined by the World Health Organization as abnormal or excessive fat accumulation that may impair health. There is an increasing trend towards herbal slimming products in obesity treatment. The quality control analysis of these products is important for public health.
10p
tudichquannguyet
29-11-2021
11
1
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Antiinfective properties of ursolic acid-loaded chitosan nanoparticles against Staphylococcus aureus
The present study aimed to synthesize ursolic acid-loaded chitosan nanoparticles (UA-Ch-NPs) as an antiinfective agent against 21 Staphylococcus aureus isolates. The UA-Ch-NPs were synthesized by a simple method and then characterized by TEM, FTIR, DLS-zeta potential, and XRD analyses. According to the characterization results, highly dispersed spherical nanoparticles with a mean diameter of 258 nm and a zeta potential of + 40.1 mV were developed. The antibacterial properties of UA-Ch-NPs were investigated and their inhibitory effect on biofilm formation was demonstrated by AFM.
9p
tudichquannguyet
29-11-2021
9
2
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Phytochemical data of Sterculia foetida Linn. are scarce. The leaves of Sterculia foetida Linn. collected in Binh Thuan Province were chemically investigated using multiple chromatographic methods. Three compounds, hesperidin (1), kaempferol (2) and ursolic acid (3) were isolated and elucidated. Their chemical structures were elucidated by comparing their spectroscopic data with those in previous studies. These compounds were found for the first time from the leaves of Sterculia foetida Linn. Compounds 1 was obtained for the first time in Sterculia genus.
6p
angicungduoc11
18-04-2021
18
1
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This study assessed the effects of ursolic acid (UA) on airway-vessel remodeling and muscle atrophy in cigarette smoke (CS)-induced emphysema rats and investigated potential underlying mechanisms.
11p
vimaine2711
26-03-2021
14
2
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From the methanol extract of dried powders of Hedyotis diffusa Willd. (Rubiaceae) plant growing in Tuyen Quang Province, three compounds were isolated and identified: B-sitosterol, daucosterol and ursolic acid. Their structures were confirmed by various spectral methods (IR, NMR, MS, 1H-NMR, 13C-NMR, etc.) and by comparison with those of references.
5p
larachdumlanat127
20-12-2020
27
2
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Four compounds as B-sitosterol, 1,8-dihydroxy-3-methoxy- 6-methylanthraquinone (physcion), ursolic acid and 2α,3α,19- trihydroxyurs-12-ene-28-oic acid (euscaphic acid) were isolated from the ethanolic extract of the Rubus alceaefolius leaves growing in Vietnam. Their chemical structures were identified by IR, ESI-MS, 1D and 2D NMR spectral.
7p
larachdumlanat127
20-12-2020
17
1
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Five metabolites, scopoletin 1, ursolic acid 2, 5-(hydroxymethyl)furan-2-carbaldehyde 3, B-sitosterol 4 and daucosterol 5, were isolated from the fruit of the Morinda citrifolia Linn. plant, collected in Ho Chi Minh City. Their structures were elucidated by spectroscopic analysis.
6p
tamynhan8
04-11-2020
15
1
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Ursolic acid (UA) is an important bioactive component in many traditional medicinal plants including pomegranate (Punica granatum L.) flower.
7p
vijiraiya2711
27-05-2020
9
0
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Ocimum sanctum L. or “Tulsi” or Holy basil is a plant well known for its medicinal properties. This plant is rich in essential oil sequestered in peltate glands. The Tulsi is rich source of eugenol, methyl eugenol, chavicol, ursolic acid, rosmerinic acid and other phenolics and terpenes. Aloe barbadensis and Plantago ovata are plants rich in polysaccharides. These plants are very important medicinal plants. A. barbadensis is source of aloin which is used in various cosmetic products and P. ovata is the main source of Isabgol-Husk.
7p
nguaconbaynhay4
22-03-2020
13
0
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Five triterpene acids (1–5) were isolated from ethyl acetate extract of Docynia indica fruits. Their structures were determined to be pomolic acid (1), maslinic acid (2), ursolic acid (3), 23- hydroxyursolic acid (4) and euscaphic acid (5) by comparison of physicochemical, NMR and mass spectral data with those reported in the literatures.
6p
viuzumaki2711
08-05-2019
12
1
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Trong nghiên cứu này chúng tôi đã tiến hành phân tích hàm lượng một số hoạt chất trong thân, lá cây Râu mèo phân bố tại tỉnh Thái Nguyên. Với phương pháp định tính bằng máy sắc kí lớp mỏng và định lượng bằng máy sắc ký lỏng hiệu năng cao (HPLC), đã xác định được một số hợp chất hóa học của cây Râu mèo, bao gồm: sinensetin, acid ursolic, acid rosmarinic.
5p
comamngo1902
30-03-2019
78
3
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This work was aimed at determining the possible antimicrobial potential of asiatic acid (AA) and ursolic acid (UA) against clinical uropathogenic Escherichia coli strains (UPECs). Phylogenetic affiliations of UPECs and virulence-associated gene carriage have been identified.
9p
sony2711
01-02-2019
26
1
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In this assay, ursolic acid displayed an IC50 value of 3.42 ± 0.25 μM. This is indicated that 3,3′-dihydroxy-5,7,4′-trimethoxyflavone (4) may be useful for discovery of PTP1B inhibitors as antidiabetic agent.
7p
dannisa
16-12-2018
12
0
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Borreria là một chi thuộc họ Cà phê phổ biến ở vùng nhiệt đới và cận nhiệt Châu Mỹ, Châu Phi, Châu Á và Châu Âu. Ở Việt Nam, cây Borreria alata (Aubl.) DC được xem là loài cỏ dại và chưa có nghiên cứu nào về thành phần hóa học cũng như hoạt tính sinh học của cây. Mời các bạn cùng tìm hiểu về loại cây này.
6p
bautroibinhyen17
13-02-2017
45
3
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