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Wang X, Xiang J, Wang J, Yu Z, Tang ZL, Xiao J. H3PO3/I2 mediated formation of N-benzyl benzo heterocyclic ketones from aromatic aldehydes and benzyl alcohol derivatives. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Krawczyk P, Bratkowska M, Wybranowski T, Hołyńska-Iwan I, Cysewski P, Jędrzejewska B. Experimental and theoretical insight into spectroscopic properties and bioactivity of 4-(4-formylbenzylidene)-2-phenyloxazol-5(4H)-one dye for future applications in biochemistry. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113632] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Wahid S, Versiani MA, Jahangir S, Jawaid K, Shafique M, Khan H, Faizi S. Phytochemical and Biological Activities of Pseudocalymma elegans: A False Garlic. Chem Biodivers 2017; 14. [PMID: 28672060 DOI: 10.1002/cbdv.201700222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 06/29/2017] [Indexed: 11/09/2022]
Abstract
Evaluation of phytochemical constituents and antioxidant and antimicrobial activities of hexane (PELH), dichloromethane (PELDCM), ethyl acetate (PELEA), and MeOH (PELM) extracts of young leaves of Pseudocalymma elegans have been carried out. Moreover, extracts have also been explored for the presence of sulphur containing compounds, 1,2-dithiolane (33), diallyl disulfide (35), 3-vinyl-1,2-dithiacyclohex-5-ene (37), and diallyl trisulfide (38) responsible for the garlic like smell of P. elegans. All the extracts were found to be antioxidant and showed potent inhibition with IC50 values of 0.168 ± 0.001, 0.128 ± 0.002, 0.221 ± 0.011, and 0.054 ± 0.001, respectively, as compared to standard drugs ascorbic acid (AA) and butylated hydroxytoluene (BHT). The ethyl acetate extract (PELE) showed excellent activities against few Gram-positive and Gram-negative bacteria and some fungi as compared with standard drug ceftriaxone (3rd generation cephalosporin) and nystatin, respectively. Chemical constituents of hexane, dichloromethane, and ethyl acetate extracts were identified by gas chromatography-mass spectrometry and mass spectral library search. Over all 55 chemical constituents were first time identified from the leaves which included branched and n-hydrocarbons, fatty acids, fatty acid methyl esters, fatty alcohols, terpenes, alkaloid, vitamins, glycosides, aromatic compounds, and sulfur containing compounds. Two known chemical constituents, ursolic acid (1) and β-amyrin (2), were also purified for the first time from the MeOH extract. To elucidate the structures of these compounds, UV, IR, EI-MS, 1 H- and 13 C-NMR spectroscopy were used.
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Affiliation(s)
- Sana Wahid
- Department of Chemistry, Federal Urdu University of Arts, Sciences and Technology, Science Campus, Gulshan-e-Iqbal, Karachi, 75300, Pakistan
| | - Muhammad Ali Versiani
- Department of Chemistry, Federal Urdu University of Arts, Sciences and Technology, Science Campus, Gulshan-e-Iqbal, Karachi, 75300, Pakistan
| | - Sajid Jahangir
- Department of Chemistry, Federal Urdu University of Arts, Sciences and Technology, Science Campus, Gulshan-e-Iqbal, Karachi, 75300, Pakistan
| | - Khurshid Jawaid
- Department of Microbioloy, Federal Urdu University of Arts, Science and Technology, Ghulshan-e-Iqbal, Karachi, Sind, 75300, Pakistan
| | - Maryam Shafique
- Department of Microbioloy, Federal Urdu University of Arts, Science and Technology, Ghulshan-e-Iqbal, Karachi, Sind, 75300, Pakistan
| | - Huma Khan
- Department of Chemistry, Federal Urdu University of Arts, Sciences and Technology, Science Campus, Gulshan-e-Iqbal, Karachi, 75300, Pakistan
| | - Shaheen Faizi
- HEJ Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
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