ypsilandra yunnanensis/saponine

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Two New Steroidal Saponins from Ypsilandra thibetica.

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Two new monosaccharide steroidal saponins, named ypsilandroside S (1) and ypsilandroside T (2), have been isolated from the whole plants of Ypsilandra thibetica. Their structures were elucidated as heloniogenin 3-O-β-D-apiofuranoside (1) and pregna 5,16-dien-3β,12α-diol-20-one-3-O-β-D-apiofuranoside

Rapid and Sensitive Determination of the Major Steroidal Saponins of Ypsilandra thibetica Franch by Ultra High-Performance Liquid Chromatography Coupled with Triple Quadrupole Mass Spectrometry.

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A rapid and validated method using ultra high-performance liquid chromatography coupled with a triple quadrupole mass spectrometry (UHPLC-QQQ MS) was developed for simultaneous determination of four active steroidal saponins, i.e., dichotomin ( 1: ), pennogenin

Ypsilandrosides C-G, five new spirostanol saponins from Ypsilandra thibetica.

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A further phytochemical investigation on the whole plants of Ypsilandra thibetica yielded one sapogenin and 12 spirostanol saponins. Five of these are new compounds, designated as ypsilandrosides C-G (2-6). Their structures were determined by detailed spectroscopic analysis, including extensive 1D

Transcriptome analyses of Paris polyphylla var. chinensis, Ypsilandra thibetica, and Polygonatum kingianum characterize their steroidal saponin biosynthesis pathway.

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Steroidal saponins, one of the most diverse groups of plant-derived natural products, elicit biological and pharmacological activities; however, the genes involved in their biosynthesis and the corresponding biosynthetic pathway in monocotyledon plants remain unclear. This study aimed to identify

Spirostanol saponins from Ypsilandra parviflora induce platelet aggregation.

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Phytochemical investigation on the whole plants of Ypsilandra parviflora led to the isolation of seven new spirostanol saponins, named ypsiparosides A-G, together with 14 known saponins. Their structures were unambiguously established based on extensive spectroscopic evidence and chemical methods.

Five new steroidal compounds from Ypsilandra thibetica.

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Five new steroids, including the four new steroidal saponins ypsilandroside B (1), ypsilandroside A (2), isoypsilandroside A (4), and isoypsilandroside B (5), as well as the new steroidal sapogenin isoypsilandrogenin (3), were isolated from the whole plant of Ypsilandra thibetica Franch. Their

Spirostanol tetraglycosides from Ypsilandra thibetica.

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Phytochemical reinvestigation on the whole plants of Ypsilandra thibetica obtained five new spirostane glycosides, ypsilandrosides H-L (1-5), and a known saponin polyphylloside III (6). Among them, 1 and 2 are the first spirostane glycosides which possess novel 5(6-->7) abeo-steroidal aglycones.

[Research progress of Ypsilandra thibetica, a medicinal plant of Liliaceae].

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Ypsilandra thibetica belongs to the family Liliaceae. Its whole plant has the medicinal functions of heat-clearing and detoxifying, relieving congestion and other effects, and is used as the folk medicine to cure scrofula, dysuria embolism and other symptoms. Previous chemical studies revealed that

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