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Alternative Titlethe preparation, purity determination by hplc and structural elucidation of rupestonic acid
雍建平; 阿吉艾克拜尔·艾萨
Source Publication计算机与应用化学

从新疆一枝蒿中分离得到了一枝蒿酮酸,通过HPLC检测了其纯度(99.7%),色谱条件:VPODSC18(150 mm×4.6mm,5μL)色谱柱,流动相为甲醇-0.5%磷酸溶液(V/V,45/55),检测波长245 nm。并采用IR,1H NMR,13C NMR,ESI-MS进行了表征。应用XRD单晶衍射确定了其晶体结构,该晶体属于单斜晶系,P2/m空间群,实验化学式为C30H40O6(为双分子聚合体),实际化学式为C15H20O3,晶胞参数:a=9.5295(7)nm,b=9.4821(6)nm,c=15.0469(10),α=90°,β=98.361(2)°,γ=90°,V=1345.18(16)nm3,Z=2,Mr=496.62,Dc=1.226 g/cm3,F(000)=536,R1=0.0561,ωR2=0.1265。接着采用量子化学中的密度泛函理论(DFT),在B3LYP/6-311G(d,p)基组下计算了该化合物的优化结构参数、电荷分布、分子总能量及前线轨道能量。算得的键长、键角数据和单晶衍射数据相符合。结果表明计算得到的分子几何优化结构可靠,所用的计算方法可靠。

Other Abstract

The rupestonic acid was isolated from the Artemisia rupestris L.The purity(99.7%) was detected by HPLC on VP ODS C18(150 mm*4.6 mm, 5muL) column.The mobile phase was methanol -0.5%phosphoric acid(V/V, 45/55) and detection wavelength was 245 nm.It was confirmed by IR, ~1H NMR, ~(13)C NMR, ESI-MS and XRD.XRD showed that the rupestonic acid crystallizes with two independent molecules in the asymmetric unit and belongs to monoclinic space, group of P2/m, with a=9.5295(7) nm, b=9.4821(6) nm, c=15.0469(10), alpha=90degrees, beta= 98.361(2)degrees, gamma=90degrees, V=1345.18(16) nm~3, Z=2, Mr=496.62, Dc=1.226 g/cm~3, F(000)=536, mu=0.08 mm-1 and the final deviation factor R_1=0.0561, omegaR_2=0.1265.The optimized structure, charge distribution, molecular total energy, HOMO and LUMO energy were calculated by quantum chemical method at DFT-B3LYP/6-311G(d, p) basis.The result shows that the bond lengths and angles obtained by quantum chemical calculation were almost the same with those of the experiment, suggesting that the molecular geometry optimization of the structure was reliable, and the calulation method used was reliable.

Keyword一枝蒿酮酸 制备 纯度检测 结构表征 晶体结构 量子化学计算
Subject AreaChemistry (Provided By Thomson Reuters)
Indexed ByCSCD
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Document Type期刊论文
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GB/T 7714
雍建平,阿吉艾克拜尔·艾萨. 一枝蒿酮酸的制备、纯度检测及结构解析[J]. 计算机与应用化学,2011,28(5):535-539.
APA 雍建平,&阿吉艾克拜尔·艾萨.(2011).一枝蒿酮酸的制备、纯度检测及结构解析.计算机与应用化学,28(5),535-539.
MLA 雍建平,et al."一枝蒿酮酸的制备、纯度检测及结构解析".计算机与应用化学 28.5(2011):535-539.
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