鼠李

It was found that OTPS 2-1 was a trinal compound of polysaccharide containing rich uronic acid and little protein by using methods of UV, IR, GC, HPLC and GPC-LLS.

经GC，HPLC，UV，IR和GPC-LLS证实OTPS 2-1是富含糖醛酸和少量蛋白质的三元糖复合物，相对重均分子量为8.877×10^4，糖基由半乳糖、葡萄糖、阿拉伯糖、岩藻糖和鼠李糖组成，其摩尔比为

Compound 9 is glycosylated in the presence of TMSOTf with rhamose-derived trichloroacetimidates to provide target trisaccharide Saponin 1, oleanolic acid 3-yl-2,4-di-O-a-L-rhamnopyranosyl -p-D-glucopyranosideCoumpond 18 is prepared with oleanic acid and Bromide 11 through phase-thansfer catalysis glycosylation manner.

三糖皂苷Saponin 1是以葡萄糖齐墩果酸皂苷为起始原料，用BBTZ(1-苯甲酰苯并噻唑)选择性保护葡萄糖3′，6′-羟基得到化合物9，然后以化合物9为糖基受体，进行一步糖苷化可以在化合物9的2′，4′-羟基上同时引入两分子鼠李糖，最后脱掉所有的保护基得到目标化合物Saponin1。

Branchlets spreading, often virgate, purple-red or dark purple, smooth, shiny; leaf blade subleathery, oblanceolate or obovate-elliptic, apex obtuse or emarginate, glabrous or subglabrous; seeds abaxially with broad furrow.

小枝开展，经常是棒状，紫红色或者深紫色，光滑，发亮；叶片近革质，倒披针形的或倒卵形椭圆形，先端钝的或微缺，无毛或近无毛；种子背面具宽的棱槽。 41 R。 leptacantha 纤花鼠李

New plants of Rhamnaceae and Anacardiaceae from Guizhou.

贵州鼠李科、漆树科的新植物。

Anthocyanidin extract in methanol showed 3 absorption peaks, at 270, 340 and 520 nm, in the UV-vis spectrum, with bathochromic and hypsochromic shift with methanol+AlCl3 and methanol+AlCl3+HCl, respectively; the ratio of the absorbance at 440 nm to that at 520 nm was 0.29. No fluorescence occurred under UV irradiance, and 5 absorption peaks occurred at 270 nm after HPLC. Five molecular ion peaks occurred on MS: 595, 381, 611, 587 and 571, respectively, and monosaccharides in the extract were identified as rhamuose and glucose on HPLC.

一品红花色素的甲醇溶液分别在270、340 和520 nm 处有 3 个吸收峰；在 440 nm 吸光度与可见光最大吸收波长 520 nm 吸光度的比值为0.29；花色素的甲醇溶液中加入AlCl3后发生红移，再加入HCl后发生蓝移；色素溶液在紫外光下无荧光；色素样品经液相色谱分离后在 270 nm检测有 5 个比较明显的吸收峰；质谱中得到 595、611、381、571 和 589 等对应的分子离子峰；花色素酸解液高效液相色谱图谱和鼠李糖、葡萄糖的出峰时间一致。

In order to reduce side effects of anthrone L-rhamnopyranosides, the introduction of Ac group into methylene proton at C-10 of anthrone was carried out.

为有效地降低蒽酮鼠李糖糖苷的心脏毒性，设计合成了系列在其C-10亚甲基引入Ac的衍生物。

Evergreen trees or shrubs; young branches glabrous; leaves leathery, abaxially glabrous or barbellate in axils of leaves.

常绿的乔木或灌木；幼枝无毛；叶革质，背面无毛或在叶腋。 6 R。 hemsleyana 亮叶鼠李

Sixteen compounds were separated from 80% ethanol extract of Plant A, they were:-lariciresinol,-isolariciresinol,-isolariciresinol 9-O-β-D-glucopyranoside, tanegoside B, apiginin, apigenin 7-O-β-D-glucoside, apigenin 7-O-β-neospheroside, quercetin 3-O-β-D-glucopyranoside, 1, 7-dihydroxy-3, 4-dimethoxyxanthone, 3-O- [α-L-rhamnopyranosyl (1-4 ] -β-D-glucopyranoside-(25S)-5β-spirostan-3β-ol , 3β-O-D-glucopyranoside quinovic acid, mangiferin , 3'-p-hydroxybenzoyl-mangiferin, physcion, benzenyl methanol β-D-glucopyranoside and Vanillic acid.

结果： 1。从植物A的80％乙醇提取物中共分离得到16个化合物，分别为：-落叶松脂醇、-异落叶松脂醇、异落叶松脂醇9-O-β-D-吡喃葡萄糖苷、tanegoside B、芹菜素、芹菜素7-O-β-葡萄糖苷、芹菜素7-O-β-新橙皮糖苷、槲皮素3-O-β-D-吡喃葡萄糖苷、1，7-二羟基-3，4-二甲氧基-口山酮、菝葜皂苷元-3-O-[α-L-吡喃鼠李糖基（1-4）]-β-D-吡喃葡萄糖苷、喹诺酸3β-O-D-葡萄糖苷、知母宁、3′-对羟基苯甲酸-知母宁、大黄素甲醚、苯甲醇-β-D-吡喃葡萄糖苷、香草酸。

The common building block of them was synthesized by firstly glycosylation of an appropriately protected glucose with diosgenin, then introduction of a rhamnosyl residue to the 2-OH at Glu, finally freeing the 4-OH at Glu by selectively benzoylation of 6-OH.

我们先将适当保护的葡萄糖接在薯蓣甙元上，然后选择性地保护葡萄糖的 3 位羟基，在 2 位上引入一个鼠李糖，接下来选择性地保护葡萄糖的 6 位羟基，得到了上面三个皂甙的共同合成子。

The common building block of them was synthesized by firstly glycosylationof an appropriately protected glucose with diosgenin, then introduction of a rhamnosyl residue to the 2-OH at Glu, finally freeing the 4-OH at Glu by selectively benzoylation of 6-OH.

我们先将适当保护的葡萄糖接在薯蓣甙元上，然后选择性地保护葡萄糖的3位羟基，在2位上引入一个鼠李糖，接下来选择性地保护葡萄糖的6位羟基，得到了上面三个皂甙的共同合成子。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。