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논문 기본 정보

자료유형
학술저널
저자정보
Hermann Marius Feumo Feusso (University of Douala) Jean de dieu Dongmo (University of Douala) Hermine Laure Maza Djomkam (University of Douala) Carine Mvot Akak (University of Yaounde) Mehreen Lateef (Bahria University Medical and Dental College) Ayaz Ahmed (University of Karachi) Anatole Guy Blaise Azebaze (University of Douala) Alain François Kamdem Waffo (University of Douala) Muhammad Shaiq Ali (University of Karachi) Juliette Catherine Vardamides (University of Douala)
저널정보
한국생약학회 Natural Product Sciences Natural Product Sciences Vol.26 No.4
발행연도
2020.12
수록면
311 - 362 (52page)
DOI
10.20307/nps.2020.26.4.311

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초록· 키워드

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The chemical investigation of the methanolic crude extract of leaves of Diospyros iturensis gave us 15 known secondary metabolites identified as mixture of α-amyrenone (1) and β-amyrenone (2), β-amyrin (3), mixture of β-sitosterol (4) and stigmasterol (5), betulin (6), uvaol (7), betulinic acid (8), ursolic acid (9), corosolic acid (10), actinidic acid (11),11-O-p-hydroxybenzoylbergenin (12), bergenin (13) and mixture of stigmasterol glucoside (14) and β-sitosterol glucoside (15) respectively. The structures of secondary metabolites were elucidated with the help of NMR and mass spectral data and by comparison of their spectral data with literature. Among the fifteen isolated compounds, four compounds were identified for the first time in Diospyros genus. These included uvaol (7), corosolic acid (10), actinidic acid (11) and 11-O-p-hydroxybenzoylbergenin (12). Crude methanolic extract of leaves and four isolated compounds including betulin (6), betulinic acid (8), 11-O-p-hydroxybenzoylbergenin (12) and bergenin (13) were evaluated for their antiproliferative activity against two cancer cell lines CAL-27 and NCI-H460 by the MTT assay, antioxidant potential and inhibitory activity against the lipoxygenase and urease enzymes, respectively. The results indicated that the methanolic crude extract of leaves exhibited moderate antioxidant activity and was inactive against the two cancer cell lines. Betulin (6), 11-O-p-hydroxybenzoylbergenin (12) and bergenin (13) exhibited moderate antioxidant and lipoxygenase inhibition with IC<SUB>50</SUB> = 65.8, 85.6, 82.5 μM and IC<SUB>50</SUB> = 58.5, 95.2, 76.2 μM, respectively. Furthermore, 11-O-p-hydroxybenzoylbergenin (12) and bergenin (13) exhibited moderate urease inhibition activity with IC<SUB>50</SUB> values of 45.6 μM and 49.8 μM, respectively.

목차

Abstract
Introduction
Experimental section
Results and discussion
References

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