薯蓣

The second route firstly studied the tautomerization of the key intermediate from spirostane to cholestane 3-O-substituted kryptogenin,then formed a direct access used Zn/KI/HOAc reduction,which supplied a better synthetic method of MPD and other furostanol saponins.

第二条路线则首先研究了由螺甾到胆甾结构的关键中间体3-O-substituted kryptogenin的异构化现象，建立起以Zn/KI/HOAc还原反应直接合成该中间体的过程，这提供了一个更好的合成甲基原薯蓣皂苷及其他呋甾皂苷的方法。

Diosgenin was not detected in twining stem nor in leaf.

在地上的缠绕茎和叶中没有检测到薯蓣皂甙元。

The monophylies of nine clades of monocots (Alismatales s.l., Dioscoreales, Pandanales, Asparagales, Liliales, Arecales, Poales, Zingiberales, and Commelinales) and six clades of other angiosperms (Nymphaeales, eudicots, Magnoliales, Laurales, Piperales, and Canellales) were supported in the strict consensus tree of combined analyses.

联合分析鉴定出9个单子叶植物主要谱系（广义泽泻目Alismatales、薯蓣目Dioscoreales、露兜树目Pandanales、天门冬目Asparagales、百合目Liliales、棕榈目Arecales、禾本目Poales、姜目Zingiberales、鸭跖草目Commelinales）和6个其他被子植物主要谱系（睡莲目Nymphaeales、真双子叶植物、木兰目、樟目、胡椒目、林仙目）。

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。

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我公司主营产品：钩藤 Gouteng ·水飞蓟素·水飞蓟素·水飞蓟宾·白藜芦醇·大豆甙元·大黄素·大豆异黄酮·酸枣仁提取物·姜黄素，青蒿素松树皮提取物，连翘提取物，野菊花提取物，喜树碱，山楂提取物，熊果酸，玉米须提取物，麦冬提取物，大蒜提取物，人参总皂甙，枸杞提取物，问荆提取物，绿茶提取物，小白菊提取物，苦参提取物，缬草提取物，水杨甙，鬼臼毒素，红曲米提取物，葛根提取物，黄芪提取物，苦瓜提取物，刺蒺藜提取物，银杏叶提取物，枳实提取物，淫羊藿甙，葡萄籽提取物，丹参提取物，山药提取物，越橘提取物，穿心莲提取物，白柳皮提取物，五味子提起物，绞股蓝提取物，当归提取物，红车轴草提取物，红景天提取物，土贝母总皂甙，黄春菊提取物，黑升麻提取物，贯叶连翘提取物，虎杖甙，染料木素，利血平，辛弗林，青藤碱，刺五加甙，薯蓣皂素，葛根素，脱皮激素，卡瓦提取物，叶黄素，番茄红素，南瓜籽提取物，甘草提取物，荨麻提取物，黄芩提取物，蛇床子，细辛，锯叶棕提取物，水皂角提取物，芦丁提取物，紫甘蓝提取物，益母草提取物，延胡索提取物，啤酒花提取物，厚朴提取物，黄杨木提取物，板兰根提取物，生姜提取物，蒲公英提取物，番泻叶提取物，芦荟提取物，党参提取物，金银花提取物，槲皮素，等等

New taxa of Dioscoreaceae from China.

中国薯蓣科新分类群。

New taxa of Dioscoreaceae from China.

标题 中国薯蓣科新分类群。

The sister-group relationships are strongly supported between Petrosaviaceae and the remaining monocots (except for Acoraceae and Alismatales s.l.), between Dioscoreales and Pandanales, and between Commelinales and Zingiberales in the combined analyses of two genes and three genes.

继无叶莲科之后分化的类群形成两个大的分支：一支是由露兜树目和薯蓣目构成，二者形成姐妹群关系；另一支是由天门冬目、百合目和鸭跖草类复合群组成，三者之间的关系在单个序列分析和联合分析中不稳定，需要进一步扩大取样范围来确定。

The parasiticidal effect of ethanol extracts from a plant Dioscorea zingiberensis on dactylogyrid Dactylogyrus intermedius found in goldfish was studied to search for parasiticidal substances by standard laboratory procedures compared with the other four drugs mebendazole, abamectin, ivermectin and praziquantel.

以寄生在金鱼Carassius auratus鳃部的中型指环虫Dactylogyrus intermedius为指示寄生虫，采用活体感染、活体杀虫的方法，研究了用不同溶剂（石油醚（沸程60~90℃）、氯仿、乙酸乙酯、乙醇和水）分别对盾叶薯蓣Dioscorea zingiberensis进行提取，其5种提取物的杀虫活性。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。