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4-芳亚甲基-2-羟基-3-蒎酮类化合物的合成及其紫外吸收特征研究 被引量:7
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作者 魏柏松 徐徐 +2 位作者 杨益琴 曹晓琴 王石发 《有机化学》 SCIE CAS CSCD 北大核心 2012年第12期2287-2293,共7页
以(-)-α-蒎烯为原料合成了系列新型4-芳亚甲基-2-羟基-3-蒎酮类化合物.(-)-α-蒎烯经选择性氧化得到(+)-2-羟基-3-蒎酮;在碱催化作用下,(+)-2-羟基-3-蒎酮与苯甲醛、对甲基苯甲醛、对甲氧基苯甲醛、对羟基苯甲醛、对氯苯甲醛、对硝基... 以(-)-α-蒎烯为原料合成了系列新型4-芳亚甲基-2-羟基-3-蒎酮类化合物.(-)-α-蒎烯经选择性氧化得到(+)-2-羟基-3-蒎酮;在碱催化作用下,(+)-2-羟基-3-蒎酮与苯甲醛、对甲基苯甲醛、对甲氧基苯甲醛、对羟基苯甲醛、对氯苯甲醛、对硝基苯甲醛和糠醛等芳香醛缩合,得到系列光学活性4-芳亚甲基-2-羟基-3-蒎酮类化合物a~g.采用1H NMR,13C NMR,GC-MS和FT-IR等分析手段对合成所得4-芳亚甲基-2-羟基-3-蒎酮类化合物的结构进行了表征,考察了它们的紫外吸收特性及光稳定性.结果表明,化合物a,b,e对UVB具有良好的吸收性能;而化合物c,d,f,g兼具长波紫外线(UVA)和中波紫外线(UVB)的吸收性能.化合物a~g的光稳定性顺序为d>c>e>f>b>a>g. 展开更多
关键词 (-)- (+)-2-羟基-3- 4-芳亚甲基-2-羟基-3- 紫外吸收
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Comparison of Essential Oils in Aerial Parts of Artemisia Sieberi from Kashan Province of Iran
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作者 Reza Dehghani Bidgoli Mohammad Pessarakli Gholam Ali Heshmati 《Journal of Agricultural Science and Technology(A)》 2012年第3期392-396,共5页
Essential oils chemical composition of,4rtemisia sieberi leaves/stems and flowers/fruits (F/F) growing wild in Kashan, central Iran, have been analyzed using GC-MS technique. This study was conducted in order to ide... Essential oils chemical composition of,4rtemisia sieberi leaves/stems and flowers/fruits (F/F) growing wild in Kashan, central Iran, have been analyzed using GC-MS technique. This study was conducted in order to identify and compare essential oil compounds in different aerial parts of Artemisia sieberi. Plants sampled at random in full flowering stage in a CR (completely randomized) design with three replications. Analysis on leaves/stems revealed 55 identified compounds, representing 97.66% of the oil with a-pinene being the main component (34.33%); other significant components in the leaves/stems include: α-amorphene, β-pinene, δ-cadinene, α-cadinene, methyl cyclopentan. For flowers/fruits (F/F) 29 compounds were identified, representing 96.96% of the oil with the main component being α-amorphene (15.86%) and α-pinene (12.34%) being the second main component. A number of other significant components found in fiowers/fruits were α-campholene aldehyde, isopinocarveol, β-caryophylene, calarene, δ-cadinene. Several compounds (some with significant compositions) were found in this variety ofA. sieberi which are not reported in the previous literature. 展开更多
关键词 Essential oil Artemisia sieberi A-PINENE a-amorphene.
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