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New 5-Alkenyl Resorcinols from <i>Lithraea molleoides</i>(Vell). Eng.
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作者 Alejandra Catalano Beatriz Lantaño +1 位作者 Lucas Fabián Paula López 《American Journal of Plant Sciences》 2020年第6期861-868,共8页
<i><span style="font-family:Verdana;">Lithraea</span></i><span style="font-family:;" "=""> <i><span style="font-family:Verdana;">m... <i><span style="font-family:Verdana;">Lithraea</span></i><span style="font-family:;" "=""> <i><span style="font-family:Verdana;">molleoides</span></i><span style="font-family:Verdana;"> (Anacardiaceae) is a tree that grows in South America including Southern Brazil, Southern, and Eastern Bolivia, Southern Paraguay, Northern, and Central Argentina. Infusions, decoctions, or tinctures from its aerial parts (leaves, buds, and young stems) are employed in ethnomedicine mainly against respiratory, and digestive inflammations and illnesses. Antibacterial, antiviral, antioxidant, anti-inflammatory, and antinociceptive activities, among others, have been reported for </span><i><span style="font-family:Verdana;">L.</span></i> <i><span style="font-family:Verdana;">molleoides</span></i><span style="font-family:Verdana;">. Many of its biological activities have been associated with the reported presence of 5-alkenyl resorcinols. Alkyl/alkenyl catechols and alkyl/alkenyl resorcinols are very common in members of the Anacardiaceae family and several activities have been attributed to them. This work describes the isolation and the structural elucidation of three new 5-alkenyl resorcinols isolated from </span><i><span style="font-family:Verdana;">Lithraea</span></i> <i><span style="font-family:Verdana;">molleoides</span></i><span style="font-family:Verdana;"> reported in nature for the first time.</span></span> 展开更多
关键词 Lithraea molleoides 5-Alkenyl resorcinol (Z Z)-5-(Pentadeca-6 9-Dienyl)-resorcinol (Z Z)-5-(Trideca-5 8-Dienyl)-resorcinol (Z)-5-(Heptadec-6-enyl)-resorcinol
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A New Halogenated Biindole and A New Apo-carotenone from Green Alga Chaetomorpha basiretorsa Setchell 被引量:6
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作者 DaYongSHI LiJunHAN +5 位作者 JieSUN ShuaiLI SuJuanWANG YongChunYANG XiaoFAN JianGongSHI 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第6期777-780,共4页
A new halogenated biindole and a new apo-carotenone have been isolated from the ethanolic extract of the green alga Chaetomorpha basiretorsa Sethcell. On the basis of chemical and spectroscopic methods including 2D NM... A new halogenated biindole and a new apo-carotenone have been isolated from the ethanolic extract of the green alga Chaetomorpha basiretorsa Sethcell. On the basis of chemical and spectroscopic methods including 2D NMR technique, their structures have been elucidated as 4,4′-dichloro-5,5′-dibromo-7,7′-dimethoxy-2,2′-bi-1H-indole and 1′S*,4′R*-8-(4′-hydroxy-2′,6′,6′- trimethylcyclohex-2-enyl)-6-methyloct-3E,5E,7E-trien-2-one, respectively. 展开更多
关键词 Green alga Chaetomorpha basiretorsa Sethcell 4 4′-dichloro-5 5-dibromo-7 7′-di- methoxy-2 2′-bi-1H-indole 1′S* 4′R*-8-(4′-hydroxy-2′ 6′ 6′-trimethylcyclohex-2-enyl)-6-methyl- oct-3E 5E 7E-trien-2-one.
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Stereoselective Synthesis of (Z)-5-(Trideca-4-enyl)resorcinol and Gibbilimbols A—D
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作者 周岭 李洋 曹小平 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2004年第11期1344-1349,共6页
Z)-5-(Trideca-4-enyl)resorcinol (1) and gibbilimbols AD (25) were synthesized in 47%60% yields over 6 steps from commercially available starting materials. The Wittig reaction of various alkyl phosphonium bromides wit... Z)-5-(Trideca-4-enyl)resorcinol (1) and gibbilimbols AD (25) were synthesized in 47%60% yields over 6 steps from commercially available starting materials. The Wittig reaction of various alkyl phosphonium bromides with appropriate aldehydes in the presence of potassium tert-butoxide (t-BuOK) in anhydrous THF solution at room temperature served as the key step, and the result showed that only (Z)-configuration olefins were formed by this procedure. The synthesis of the (Z)-5-(trideca-4-enyl)resorcinol (1) was reported for the first time. 展开更多
关键词 (Z)-5-(trideca-4-enyl)resorcinol gibbilimbol SYNTHESIS Wittig reaction
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尾叶紫金牛化学成分研究Ⅱ
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作者 庞亚 邓赟 +3 位作者 但小梅 李秀茹 毛艳苹 伍红英 《中药与临床》 2013年第4期4-6,共3页
目的:对尾叶紫金牛的化学成分进行研究。方法:应用正相硅胶、Sephadex LH-20、MCI gel、ODS等填料进行分离纯化,运用MS、1H-NMR、13C-NMR结合理化性质鉴定结构。结果:从尾叶紫金牛的乙酸乙酯萃取部位及正丁醇萃取部位共分离鉴定了5个化... 目的:对尾叶紫金牛的化学成分进行研究。方法:应用正相硅胶、Sephadex LH-20、MCI gel、ODS等填料进行分离纯化,运用MS、1H-NMR、13C-NMR结合理化性质鉴定结构。结果:从尾叶紫金牛的乙酸乙酯萃取部位及正丁醇萃取部位共分离鉴定了5个化合物,分别为射干醌G(Ⅰ),5-(顺-8-十七碳烯基)间苯二酚(Ⅱ),射干醌H(Ⅲ),山奈酚-3-O-α-L-鼠李糖苷(Ⅳ),槲皮素-3-O-α-L-鼠李糖苷(Ⅴ)。结论:所有化合物均为首次从该植物中分离得到。 展开更多
关键词 尾叶紫金牛 射干醌 5-(顺-8-十七碳烯基)间苯二酚 黄酮苷
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