scholarly journals Secondary Metabolites From Different Extractives of Stereospermum suaveolens

2015 ◽  
Vol 13 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Fatema Begum ◽  
Mohammad Rashedul Haque ◽  
Kazi Sharmin Nahar ◽  
Mohammad Abdur Rashid
Keyword(s):  
Secondary Metabolites ◽  
Caffeic Acid ◽  
Chromatographic Separation ◽  
Methanol Extract ◽  
Separation And Purification ◽  
Nmr Studies

The methanol extract of leaves and bark of Stereospermum suaveolens has been subjected to repeated-chromatographic separation and purification processes to isolate the secondary metabolites. A total of seven compounds have been isolated from the plant, which were identified as fridelin (1), ?-sitosterone (stigmast-5- en-3-one) (2), stigmasterol (3), 3,4-dimethoxy cis-caffeic acid (4), 3?-friedelanol (5), ?-amyrone (6) and glyceryl tricaprate (7). The structures of the isolated compounds were elucidated by extensive NMR studies. DOI: http://dx.doi.org/10.3329/dujps.v13i1.21857 Dhaka Univ. J. Pharm. Sci. 13(1): 31-36, 2014 (June)

scholarly journals Chemical and Biological Investigations of Cerbera odollam Gaertn

2018 ◽  
Vol 16 (2) ◽  
pp. 179-186 ◽  
Author(s):  
Monica Sharfin Rahman ◽  
Adnan Faisal ◽  
Choudhury Mahmood Hasan ◽  
Monira Ahsan ◽  
Mohammad Mehedi Masud
Keyword(s):  
Carbon Tetrachloride ◽  
Secondary Metabolites ◽  
Petroleum Ether ◽  
Chromatographic Separation ◽  
Methanolic Extract ◽  
Scientific Basis ◽  
Separation And Purification ◽  
Isolation And Characterization ◽  
Soluble Fractions

The present article describes the isolation and characterization of secondary metabolites from the leaves of Cerbera odollam as well as bioactivities of the crude methanolic extract and its petroleum ether (PE), carbon tetrachloride (CTC), chloroform (CF) and aqueous (AQ) soluble fractions. In this investigation, successive chromatographic separation and purification yielded β-amyrin (CO-01), lupeol (CO-02), β-sitostenone (CO-03) and triticusterol (CO-04). The study also indicated the antioxidant, cytotoxic, antimicrobial, membrane stabilizing activities and poor thrombolytic activities. Thus, the present study endeavors to provide scientific basis to establish Cerbera odollam as a potential medicinal plant.Dhaka Univ. J. Pharm. Sci. 16(2): 179-186, 2017 (December)

scholarly journals Sterol and triterpenoids from Hygrophila schulli Buch.-Ham.

2018 ◽  
Vol 44 (2) ◽  
pp. 319-321
Author(s):  
Md Abu Suflan ◽  
Fatema Begum ◽  
Mohammad Rashedul Haque ◽  
Choudhury Mamood Hasan ◽  
Mohammad Abdur Rashid
Keyword(s):  
1H Nmr ◽  
Chromatographic Separation ◽  
Methanol Extract ◽  
Chemical Constituents ◽  
Published Data ◽  
Separation And Purification ◽  
First Report ◽  
Spectral Evidence ◽  
Whole Plants

The methanol extract of whole plants of Hygrophila schulli Buch.-Ham. was subjected to repeated chromatographic separation and purification processes to isolate its chemical constituents. A total of three compounds were isolated which have been characterized as stigmasterol, lupeol and lup-20(29)-ene-3β,23- diol on the basis of 1H NMR spectral evidence and confirmed by comparing with published data, as well as co-TLC in case of stigmasterol and lupeol. This is the first report of lup-20(29)-ene-3β,23-diol from this plant.

scholarly journals Steroid, Triterpenoid and Phenylpropanoid From Stereospermum Suaveolens (Roxb.) DC Growing in Bangladesh

2021 ◽  
Vol 50 (4) ◽  
pp. 1191-1194
Author(s):  
- Md Moniruzzaman ◽  
Md Ruhul Kuddus ◽  
Md Al Amin Sikder ◽  
AM Sarwaruddin Chowdhury ◽  
Mohammad A Rashid
Keyword(s):  
Physical Properties ◽  
Plant Species ◽  
Chromatographic Separation ◽  
Methanol Extract ◽  
Stem Bark ◽  
Separation And Purification ◽  
Chemical Structures ◽  
Nmr Data ◽  
Phytochemical Investigation ◽  
Methoxycinnamic Acid

The study was carried out to investigate the composition of natural compounds of methanol extract of leaf and stem bark of Stereospermum suaveolens (Roxb.) DC by repeated chromatographic separation and purification processes over silica gel. The phytochemical investigation resulted in the isolation of a total of three compounds, which were identified as stigmasterol (1), β-amyrin (2) and 4-methoxycinnamic acid (3). The chemical structures of the isolated compounds were elucidated by analyses of their physical properties, acquired 1H NMR data and comparison with published reports. Among these, compounds 2 and 3 are first report of their isolation from this plant species. Bangladesh J. Bot. 50(4): 1191-1194, 2021 (December)

scholarly journals Phytochemical Investigation of Calophyllum inophyllum L.

2019 ◽  
Vol 18 (2) ◽  
pp. 179-182
Author(s):  
Quazi Sufia Islam ◽  
Md Hossain Sohrab ◽  
Suraiya Sharmin ◽  
Choudhury Mahmood Hasan
Keyword(s):  
Secondary Metabolites ◽  
Chromatographic Separation ◽  
Stem Bark ◽  
Separation And Purification ◽  
Calophyllum Inophyllum ◽  
Nmr Data ◽  
Phytochemical Investigation

Repeated chromatographic separation and purification of the dichloromethane-methanol (1:1) extract of the stem bark of Calophyllum inophyllum led to the isolation of four secondary metabolites which were identified as β-friedelin (1), α-friedelan-3-ol (2), 4-hydroxyxanthone (3) and stigmast-5-en-3-one (4) by analysis of their NMR data and comparison with published values Dhaka Univ. J. Pharm. Sci. 18(2): 179-182, 2019 (December)

scholarly journals Roles of citrus secondary metabolites in tree and fruit defence against pests and pathogens

2021 ◽  
Vol 1 (2) ◽  
pp. 51-62
Author(s):  
Ibrahim Kahramanoglu ◽  
Serhat Usanmaz
Keyword(s):  
Secondary Metabolites ◽  
Human Health ◽  
Caffeic Acid ◽  
Positive Impact ◽  
Plant Defence ◽  
Background Information ◽  
Diverse Group ◽  
Coumaric Acid ◽  
Horticultural Crops ◽  
Potential Benefits

Plants have evolved several mechanisms to protect themselves from different biotic and abiotic challenges, including pest and pathogen attacks. One of the most important mechanisms is the secondary metabolites (SM) (terpenes, phenolics and nitrogen/sulphur-containing compounds). The plants have synthesised a diverse group of compounds in different concentrations (mostly in very small quantities) and have important roles in plant defence, survival, adaptation, and reproduction. Citrus crops are among the most essential cultivated fruit groups and are rich in terpenoids and phenolics. Besides the well-known benefits of these compounds on human health, they have a significant role in plant/fruit defence against biotic and abiotic challenges. This review aims to highlight the importance of these compounds (such as limonene, citral, saponin, hesperidin, quercetin, tangeritine, caffeic acid, p-coumaric acid, scoparone, etc.) and discuss their roles in tree and fruit defence against pests and pathogens. In today’s world, where there is an essential human impact on nature, a need is raised to reduce pesticides against pests and pathogens. Therefore, understanding the roles of these SM and their induction is believed to have a significant positive impact on the production and/or storage of horticultural crops and may help reduce the use of synthetic agrochemicals. In line with this information, present review was aimed to provide a background information for researchers, farmers, horticulturalists and technology developers about the potential benefits of SM on plant/fruit defence and a guideline about their induction.

scholarly journals Two Novel Iridoids from Morinda longifolia

2014 ◽  
Vol 9 (7) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Ninh Khac Ban ◽  
Vu Huong Giang ◽  
Tran My Linh ◽  
Le Quynh Lien ◽  
Ninh Thi Ngoc ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Methanol Extract ◽  
Fticr Ms ◽  
Chromatographic Methods ◽  
C Nmr

Six secondary metabolites, including two novel iridoids, longifolides A (1) and B (2), were isolated by various chromatographic methods from a methanol extract of branches and leaves of Morinda longifolia Craib. The structures of the compounds were determined on the basis of NMR spectroscopic (1H and 13C NMR, HSQC, HMBC, 1H-1H COSY, NOESY) and FTICR-MS data, as well as by comparison of them with literature values.

scholarly journals A New Cycloartane Glucoside from Rhizophora stylosa

2014 ◽  
Vol 9 (9) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Phan Thi Thanh Huong ◽  
Chau Ngoc Diep ◽  
Nguyen Van Thanh ◽  
Vu Anh Tu ◽  
Tran Hong Hanh ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Lung Adenocarcinoma ◽  
Cell Lines ◽  
Caspase 3 ◽  
Methanol Extract ◽  
Human Cancer ◽  
Human Cancer Cell ◽  
Rhizophora Stylosa ◽  
Human Cancer Cell Lines ◽  
C Nmr

Nine secondary metabolites, including a new cycloartane glucoside, rhizostyloside (1), were isolated from a methanol extract of Rhizophora stylosa leaves through several chromatographic experiments. The structures of the compounds were determined on the basis of NMR spectroscopic (1H and 13C NMR, HSQC, HMBC, 1H-1H COSY, NOESY) and HR-ESI-MS data and by comparison with literature values. Compound 1 exhibited significant cytotoxicity against three human cancer cell lines: KB (epidermoid carcinoma), LU-1 (lung adenocarcinoma), and SK-Mel-2 (melanoma). In addition, 1 strongly activated caspase-3/7 in LU-1 cells.

scholarly journals Flavonoid and Steroids from Polygonum viscosum

2016 ◽  
Vol 19 (2) ◽  
pp. 166-169 ◽  
Author(s):  
Bidyut Kanti Datta ◽  
Tahamina Iasmin ◽  
Mohammad A Rashid
Keyword(s):  
Ethyl Acetate ◽  
Chromatographic Separation ◽  
Pharmaceutical Journal ◽  
Published Data ◽  
Spectroscopic Techniques ◽  
Separation And Purification ◽  
Aerial Parts

Repeated chromatographic separation and purification of the n-hexane-ethyl acetate (3:1) extract of aerial parts of Polygonum viscosum provided a flavonoid- ternatin (1) and two steroids- stigmasterol (2) and stigmasta-4,22-dien-3-one (3). The structure of these compounds were determined on the basis of extensive NMR and other spectroscopic techniques and comparison with published data. The identity of steroids 2 and 3 was confirmed by co-TLC with authentic sample.Bangladesh Pharmaceutical Journal 19(2): 166-169, 2016

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