Neoflavonoids from the heartwood of Dalbergia melanoxylon

Neoflavonoids from the heartwood of Dalbergia melanoxylon
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来自 Dalbergia melanoxylon 心材的新黄酮类化合物

DOI:
10.1080/14786419.2020.1800692
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发表时间:
2020-08
影响因子:
2.2
通讯作者:
Xiao-wei Meng
Xiao-wei Meng
中科院分区:
化学3区
文献类型:
--
作者:
Meng-fei Wang;Guang-qiang Ma;Feng Shao;Rong-hua Liu;Lan-ying Chen;Yang Liu;Li Yang;Xiao-wei Meng

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摘要从黄檀心材中分离得到3个新的黄酮类化合物,分别命名为(1S,8R,9S)-1,5-dihydroxy-4,12-dimethoxy-8-vinyl-tricyclo[7.3.1.02,7]trideca-2,4,6,11-tetraen-10-one(1),2,5,2‘,5’-四羟基-4-甲氧基二苯甲酮(2)和2,5,3‘-三羟基-4-甲氧基二苯甲酮(3)。通过UV、IR、HRMS、1 D和2 D核磁共振等波谱方法确证了它们的结构。用肉汤稀释法测定了化合物1-3对白色念珠菌、分枝毛霉、发酵酵母菌和7株志贺氏菌、肠沙门氏菌、蜡状芽孢杆菌、表皮葡萄球菌、球形芽孢杆菌、金黄色葡萄球菌、大肠埃希菌的抑制活性。然而,化合物1-3在体外都没有表现出潜在的抗菌活性。图形摘要
Abstract Three new neoflavonoids, named (1S,8R,9S)-1,5-dihydroxy-4,12-dimethoxy-8-vinyl-tricyclo[7.3.1.02,7]trideca-2,4,6,11-tetraen-10-one (1), 2,5,2',5'-tetrahydroxy-4-methoxybenzophenone (2) and 2,5,3'-trihydroxy-4-methoxybenzophenone (3), were isolated from the heartwood of Dalbergia melanoxylon. Their structures were established by spectroscopic methods, including UV, IR, HRMS, 1 D and 2 D-NMR. Compounds 1-3 were evaluated for inhibitory activity against three fungal strains Candida albicans, Mucor ramosissimus, Saccharomycopsis fermentans and seven bacterial strains Shigella dysenteriae, Salmonella enteri, Bacillus cereus, Staphylococcus epidermidis, Bacillus sphaericus, Staphylococcus aureus, Escherichia coli using the broth dilution method. However, none of compounds 1–3 showed potential antimicrobial activities in vitro. Graphical Abstract
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