查询词典 ursolic

After chemistry and ~1H-NMR,~(13)C-NMR、GC-MR、UV, IR Spectral analysis instrument synthesis appraisal compoundⅠ,Ⅱ,ⅢRespectively isβ-Sitosterol, oleanolic acid , ursolic acid; compoundⅣ,The structure is being appraised. CompoundⅠand compoundⅢare discovered for the first time from Radix Rosa davurica pall. Through pharmacognosy research and the chemical composition carries on the system to the root of Rosa davurica pall.

经化学及~1H-NMR、~(13)C-NMR、GC-MR、UV、IR等光谱分析仪器综合鉴定化合物Ⅰ、Ⅱ、Ⅲ分别为β-谷甾醇、齐墩果酸、熊果酸，其中化合物Ⅰ和化合物Ⅲ为首次从山刺枚根中发现。

Result: Seven compounds were obtained and they are identified as luteolin, 5,7,4′-trihydroxy-3′-methoxy flavone, luteolin-7-O-β-D-glucoside, apigenin,β-sitosterol, stigmasterol, ursolic acid.

结果：从乙醇提取物中分离并鉴定了7个化合物，分别为：5 ，7，3′，4′-四羟基黄酮，5 ，7，4′-三羟基- 3′-甲氧基黄酮，5 ，3′，4′-三羟基黄酮- 7- O-β- D-葡萄糖苷，5 ，7，4′-三羟基黄酮，β-谷甾醇，豆甾醇和熊果酸。

Results The identification method for ursolic acid was established; The calibration curves of unarm showed a good linearity in the range of 0.0448-0.448 μg (r=0.9999, n=6), the average recovery was 99.7%(n=6), with RSD of 1.2%.

结果 夏枯草的薄层鉴别方法快速、灵敏，阴性无干扰；蒙花苷在0.044 8~0.448 μg范围内呈良好线性(r=0.999 9， n=5)，平均回收率为99.7%(n=6)，RSD为1.2%。

ObjectiveTo determine the ursolic acid in the roots of Actinidia deliciosa in Guangxi province by HPLC.

目的测定广西产美味猕猴桃根中熊果酸的含量。

By chromatographic techniques. On the basis of physico-chemical properties and spectral data, they were identified as α-amyrin,α-amyrin acetate, 27-hydroxy-α-amyrin,β-amyrin,β-amyrin acetate, ursolic acid,β-sitosterol, dauricine, emodin.

中分离得到9个化合物，通过理化性质和光谱分析，分别鉴定为：α-香树脂醇，α-香树脂醇乙酸酯，27-羟基－α-香树脂醇，β-香树脂醇，β-香树脂醇乙酸醇，熊果酸，β-谷甾醇，β-胡萝卜甙，大黄素。

Objective The contents of ursolic acid and oleanolic acid in Callicarpa kwangtungenesis Chun was determined by RP - HPLC.

目的采用RP-HPLC法同时测定广东紫珠中熊果酸、齐墩果酸的含量。

A determination method of ursolic acid in Callicarpa macrophylla Vahl leaves by reversed- phase high performance liquid chromtograph was established. The chromatographic column (Symmetry Shield RP18), methanol-water mobile phase(88:12, V/V) with 1.0 ml/min flow rate, the detection wavelength (210nm) and the column temperature (25℃) were adopted.

建立反相高效液相色谱测定其含量的方法，色谱柱为Symmetry Shield RP18柱，流动相为甲醇-水（体积比88∶12），流速1.0 ml/min，检测波长210 nm，柱温25℃。

A determination method of ursolic acid in Callicarpa macrophylla Vahl leaves by reversed- phase high performance liquid chromtograph was established. The chromatographic column (Symmetry Shield RP18), methanol-water mobile phase(88:12, V/V) with 1.0 ml/min flow rate, the detection wavelength (210nm) and the column temperature (25℃) were adopted.

建立反相高效液相色谱测定其含量的方法，色谱柱 Symmetry Shield RP18柱，流动相为甲醇-水（体积比88∶12），流速1.0 ml/min，检测波长210 nm，柱温25℃。

RESULTS:12 compounds separated from Dendranthema nankingense were elucidated as cerotic acid,β-sitosterol,ursolic acid,chrysoeriol,luteolin,caffeic acid,daucosterol,chrysoeriol-7-O-glucoside,luteolin-7-O-glucoside,linarin,rutin and potassium nitrate.

结果：从菊花脑中分离得到12个化合物，即正二十六烷酸、β-谷甾醇、熊果酸、金圣草黄素、木犀草素、咖啡酸、胡萝卜苷、金圣草黄素-7-O--βD-葡萄糖苷、木犀草素-7-O--βD-葡萄糖苷、蒙花苷、芦丁、硝酸钾。

RESULTS: Sixteen compounds, ursolic acid (1), indole-3-carboxaldehyde (2), indole-3-carboxylic acid (3), p-coumaric acid (4), azelaic acid (5), N-trans-feruloyl tyramine (6), blumenol A (7), 2-hydroxy-3-methylanthraquinone (8), rubiadin l-methyl ether (9), rubiadin (10), quercetin (11), luteolin (12), chrysoeriol 6-C-β-boivinopyranosyl-7-O-β-glucopyranoside (13), alternanthin (14), stigmasta-5, 22-dien-3β-ol (15), and α-spinasterol (16) were obtained from the EtOAc extract of Alternanthera philoxeroides.

结果：得到并鉴定了16个化合物，分别为乌苏酸(1)、吲哚-3-甲醛(2)、吲哚-3-甲酸(3)、对-香豆酸(4)、壬二酸(5)、N-反式阿魏酰基酪胺(6)、布卢姆醇A(7)、2-羟基-3-甲基蒽醌(8)、甲基异茜草素-1-甲醚(9)、甲基异茜草素(10)、槲皮素(11)、木犀草素(12)、柯伊利素-6-C-β-波伊文糖基-7-O-β-吡喃葡萄糖苷(13)、莲子草素(14)、豆甾醇(15)和α-菠甾醇(16)。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷