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Floral organogenesis of Delavaya toxocarpa (Sapindaceae;Sapindales)

Journal of Systematics and Evolution 2009年第3期47卷 237-244页

作者： 1,2,3Li-Min CAO 1Nian-He XIA 1(Institute of Economic Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China) 2(Department of Life Sciences, Hengyang Normal University, Hengyang 421008, China) 3(Graduate University of Chinese Academy of Sciences, Beijing 100049, China) (Institute of Economic Botany South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China) (Department of Life Sciences Hengyang Normal University Hengyang 421008 China) (Graduate University of Chinese Academy of Sciences Beijing 100049 China)

The floral organogenesis and development of Delavaya toxocarpa Franch. (Sapindaceae) were studied under scanning electron microscope and light microscope to determine its systematic position within Sapindaceae. Flowers arise in terminal thyrses. The sepal primordia initiate in a spiral (2/5) sequence, which are not synchronous. The flve petal primordia initiate almost synchronously and alternate with sepal primordia. Eight stamens initiate almost simultaneously and their differentiation precedes that of the petals. The last formed petal and one stamen initiate from a common primordium. Mature stamens curve inwards and cover the ovary in bud. The gynoecium begins as a hemispheric primordium on which two carpellary lobes arise simultaneously. Later in development a single gynocium is formed with two locules and two ovules per locule. Floral morphology suggests a closer affinity with Sapindaceae, although certain features of floral ontogenesis are similar to those observed in certain members of the former hippocastanaceae, such as Handeliodendron.

关键词： Delavaya toxocarpa Franch. floral organogenesis hippocastanaceae Sapindaceae.

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Three New Triterpenoid Saponins from the Seeds of Aesculus chinensis

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Chinese Chemical Letters 1999年第12期10卷 0-0,0-0页

作者： Xiu Wei YANG Jing ZHAO Yu Xin CUI(National Laboratory of Natural and Biomimetic Drugs, Beijing Medical University,Beding 100083) Natl. Lab. Nat. and Biomimetic Drugs Beijing Medical University Beijing 100083 China

Three new triterpenoid saponins, escins IVg (1), IVh (2) and VIb (3) were isolatedfrom the seeds of Aesculus chinensis along with two known saponins, escin IIIa (4) anddesacylescin I (5). Their structures were elucida... 详细信息

关键词： Aesculus chinensis hippocastanaceae escins Ⅲ4 IVg IVh and Vib desacylescin I.

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A New Triterpenoid Oligoglycoside Escin IVe from the Seeds ofAesculus Chinensis

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Chinese Chemical Letters 1999年第6期10卷 473-476页

作者： Jing ZHAO Xiu Wei YANGI Yu Xin CUl Xue Hut LIU Shun He OUYANGZ(National Laboratory of Natural and Biomimetic Drugs, Beijing Medical University.Beijing 100083Yantai Luye Pharmaceutical Co. Ltd.. 43 Yingbin Road. Yantai. Shandong 264001) Natl. Lab. Nat. and Biomimetic Drugs Beijing Medical University Beijing 100083 China Yantai Luye Pharmaceutical Co. Ltd. Yantai Shandong 264001 43 Yingbin Road China

A new triterpenoid saponin named escin IV e was isolated from the seeds of Aesculus chinensis. Its structure was established as 28-tigloylprotoaescigenin-3 beta-O- [beta-D-glucopyranosyl (1-2)] [beta-D-glucopyranosyl ... 详细信息

关键词： Aesculus chinensis hippocastanaceae triterpenoid saponins escin IVe

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Four Triterpene Oligoglycosides from the seeds of Aesculus Chinensis

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Chinese Chemical Letters 1999年第4期10卷 291-294页

作者： Jing ZHAO Xiu Wei YANG Yu Xin CUI Xue Hui LIU Shu Yan LIU Hong Ying ZHI Ji Yong CHEN Fa Bing ZHU Yun Li XUE and Dian Bo LIU (National Laboratory of Natural and Biomimetic Drugs, Beijing Medical University ,Beijing 1 00083)(Yantai Luye Pharmaceutical Natl. Lab. Nat. and Biomimetic Drugs Beijing Medical University Beijing 100083 China Yantai Luye Pharmaceutical Co. Ltd. Yantai Shandong 264001 43 Yingbin Road China

A pair of novel geometrically isomeric triterpenoid saponins named escins IVa and IVb, together with known escins Ia and Ib. were isolated from the seeds of Aesculus chinensis. Their structures were determined on the ... 详细信息

关键词： Aesculus chinensis hippocastanaceae escins Ia Ib IVa Ivb X-ray analysis

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