豆甾醇

Animal sterol mainly contains cholesterol; plant sterol mainly contains sitosterol, stigmasterol and compesterol etc, which exist in the plant seeds.

动物性甾醇以胆固醇为主，植物性甾醇主要为谷甾醇，豆甾醇和菜油甾醇等，存在与植物种子之中。

After examination of their structures, stigmasterol was used as starting material for the synthesis.

通过审查它们的结构特征，我们选择较易得的豆甾醇作为合成起始原料。

In addilion, it was found that stigmasterol had strong cytotoxic action on 〓 and Hela cells.

此外，还首次发现豆甾醇体外对〓和Hela细胞有较强的细胞毒活性。

The hemisuccination process and reaction kinetics of stigmasterol with succinic anhydride using toluene as a solvent,pyridine as a catalyst were studied.

研究了甲苯为溶剂，吡啶为催化剂，豆甾醇与琥珀酸酐的酯化反应工艺和反应动力学。

Results β-Stigmasterol (1), quercetin (2), myricetin 3'-methyl ether (3), syringetin-3-0-α-L-arabinofuranosid (4), ardicrenin (5) and ardisiacrispin A (6) were isolated and identified.

结果 分离并鉴定出6个化合物：β-豆甾醇(1)、槲皮素(2)、3'-甲基杨梅黄酮(3)、丁香亭－3-O-α-L-阿拉伯呋喃糖苷(4)、ardicrenin(5)和ardisiacrispin A(6)。

The structures were elucidated by spectral analysis and chemical evidence.Result:Six compounds were isolated from the plant and identified as alpinumisoflavone,wighteone,daidzein,genistein,vittadinoside and stigmasterol.

结果 ：从该植物中分离得到6个化合物，分别鉴定为高山金链花素，4′，5，7 三羟基-6-异黄酮，大豆素，染料木素，维太菊苷和豆甾醇。

Free tryptophane, docosoic acid and methyl 14-methy pentadecanate were isolated and identified as monomeric compounds also for the first time from Panax plants. Malonyl-ginsenoside 〓, ginsenoside Ro,〓, Re,〓,〓,〓(8 saponins) and stigmasterol were isolated and identified for the first time from the fruits and molonyl- ginsenoside 〓 was also the first from the plant of panax quinquefolium.

游离色氨酸、二十二碳酸及14-甲基-十五碳酸甲酯是首次从人参属植物中分离鉴定的杂环α-氨基酸和脂肪羧酸类单体化合物；丙二酸单酰基人参皂甙〓、人参皂甙〓及豆甾醇是西洋参果中首次分离鉴定的8种单体皂甙和1种甾醇化合物，M-〓亦为西洋参中首次分离鉴定的皂甙化合物。

Their structures were identified by chemical and spectral analysis. RESULTS Five compounds were isolated and identified as stigmasterol 3-O-β-D-glucopyranoside, 20β-hydroxy-ecdysone,β-L-thymidine, pennogenin 3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside and pennogenin 3-O-α-L-rhamnopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→4)-[α-L-rhamnopyranosyl-(1→2)-]-β-D-glucopyranoiside.

结果 分离并鉴定了5个化合物，分别是Δ5，22-豆甾醇3-O-β-D-葡萄吡喃糖苷，20β-羟基蜕皮激素，β-L-脱氧胸腺嘧啶苷，偏诺皂苷元3-O-α-L-鼠李吡喃糖基－(1→2)-β-D-葡萄吡喃糖苷和偏诺皂苷元3-O-α-L-鼠李吡喃糖基－(1→4)-α-L-鼠李吡喃糖基－(1→4)-［α-L-鼠李吡喃糖基－(1→2)-］-β-D-葡萄吡喃糖苷。

The structures were identified by NMR, IRand MS.Results Three compounds were identified from its 80% alcohol extract as: 5,7,3'-trihydroxy- 4'-methoxyflavanone, 4',5, 7- trihydroxyflavanone, stigmaasterol.

结果 从紫茉莉种子的80%乙醇提取物中分离到3 化合物，它们的结构分别被鉴定： 5，7，3'-三羟基-4'-甲氧基黄酮(1)， 4'，5， 7-三羟基黄酮(2)，豆甾醇(3)。

The structures were identified by nmr, irand ms.results three compounds were identified from its 80% alcohol extract as: 5,7,3'-trihydroxy- 4'-methoxyflavanone, 4',5, 7- trihydroxyflavanone, stigmaasterol.

结果 从紫茉莉种子的80%乙醇提取物中分离到3个化合物，它们的结构分别被鉴定为： 5，7，3'-三羟基-4'-甲氧基黄酮(1)， 4'，5， 7-三羟基黄酮(2)，豆甾醇(3)。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。