Results 171 to 180 of about 73,444 (214)

Steroidal saponins from Tribulus terrestris

Phytochemistry, 2014
Sixteen steroidal saponins, including seven previously unreported compounds, were isolated from Tribulus terrestris. The structures of the saponins were established using 1D and 2D NMR spectroscopy, mass spectrometry, and chemical methods. They were identified as: 26-O-β-d-glucopyranosyl-(25R)-furost-4-en-2α,3β,22α,26-tetrol-12-one (terrestrinin C), 26-
Kang, Li-Ping, Wu, Ke-Lei, Yu, He-Shui, Pang, Xu, Liu, Jie, Han, Li-Feng, Zhang, Jie, Zhao, Yang, Xiong, Cheng-Qi, Song, Xin-Bo, Liu, Chao, Cong, Yu-Wen, Ma, Bai-Ping   +12 more
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Steroid saponins from Polygonatum kingianum

Phytochemistry, 1992
Four new steroid saponins, kingianosides A-D, were isolated from the rhizome of Polygonatum kingianum, together with two known steroid saponins. On the basis of chemical and spectral evidence, the structures of kingianosides A-D were established as gentrogenin 3-O-beta-D-glucopyranosyl (1-->4)-beta-D-galactopyranoside, gentrogenin 3-O-beta-D ...
X C, Li, C R, Yang, M, Ichikawa, H, Matsuura, R, Kasai, K, Yamasaki   +5 more
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Glucosylation of Steroidal Saponins by Cyclodextrin Glucanotransferase

Planta Medica, 2010
It is known that the sugar chains of steroidal saponins play an important role in the biological and pharmacological activities. In order to synthesize steroidal saponins with novel sugar chains in one step for further studies on pharmacological activity, we here describe the glucosylation of steroidal saponins, and 5 compounds, timosaponin AIII (1 ...
Yong-ze, Wang, Bing, Feng, Hong-zhi, Huang, Li-ping, Kang, Yue, Cong, Wen-bin, Zhou, Peng, Zou, Yu-wen, Cong, Xin-Bo, Song, Bai-ping, Ma   +9 more
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Steroidal saponins of Asparagus curillus

Phytochemistry, 1982
Abstract Three spirostanol and two furostanol glycosides were isolated from a methanol extract of the roots of Asparagus curillus and characterized as 3- O -[α- l -arabinopyranosyl (1→4)- β- d -glucopyranosyl]-(25 S )-5β-spirostan-3β-ol, 3- O -[{α- l -rhamnopyranosyl (1→2)} {α- l -arabinopyranosyl (1→4)}-β- d -glucopyranosyl]-(25 S )-5β-spirostan ...
S.C. Sharma, O.P. Sati, R. Chand
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Steroid saponins and steroid alkaloid saponins: pharmacological and biological properties

1995
A large number of steroid saponins and glycoalkaloids exhibit the foaming and haemolytic properties typical of saponins. They also share a large number of the biological activities of triterpene saponins, such as expectorant and diuretic effects. Furostanol glycosides are responsible for the bitter taste of asparagus (Kawano et al. 1975), tomato seed
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Steroidal saponins from Asparagus dumosus

Phytochemistry, 1999
A new steroidal saponin, dumoside, characterized as (20S)-3 beta, 16 beta-dihydroxy pregn-5-ene-22-carboxylic acid (22, 16)-lactone-3-O-beta-chacotrioside, was isolated from the whole plant of Asparagus dumosus Baker and the structure was deduced from spectral data. In addition to dumoside three more steroidal saponins characterized as 3 beta-dihydroxy
V U, Ahmad, S M, Khaliq-uz-Zaman, S, Shameel, S, Perveen, Z, Ali   +4 more
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Steroidal Saponins from Tribulus terrestris

Planta Medica, 2001
Three new steroidal saponins were isolated from the fruits of Tribulus terrestris, and their structures were elucidated as (25R,S)-5 alpha-spirostane-12-one-3 beta-ol-3-O-beta-xylopyranosyl(1-->2)- [beta-xylopyranosyl(1-->3)]-beta-glucopyranosyl(1-->4)-[alpha-rhamno- pyranosyl(1-->2)]-beta-galactopyranoside; 26-O-beta-glucopyranosyl-(25S)-5 alpha ...
L, Cai, Y, Wu, J, Zhang, F, Pei, Y, Xu, S, Xie, D, Xu   +6 more
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Steroidal Saponins of Yucca schidigera Roezl.

Journal of Agricultural and Food Chemistry, 2001
Eight steroidal saponins have been isolated from Yucca schidigera Roezl. trunk, and their structures were established by spectral (MS and NMR) techniques. These included three novel furostanol glycosides including 3-O-beta-D-glucopyranosyl-(1-->2)-[beta-D-xylopyranosyl-(1-->3)]-beta-D-glucopyranosyl-5 beta(25R)-furostan-3 beta,22 alpha,26-triol 26-O ...
OLESZEK WIESLAW, SITEK MAGDALENA, STOCHMAL ANNA, PIACENTE, Sonia, PIZZA, Cosimo, CHEEKE PETER   +5 more
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Steroidal Saponins From Fritillaria pallidiflora Schrenk

Fìtoterapìâ, 2012
Five new steroidal saponins, Pallidifloside D (1), Pallidifloside E (2), Pallidifloside G (5), Pallidifloside H (6) and Pallidifloside I (7), together with seven other steroidal saponins (3, 4, 8-12) were isolated from the dry bulbs of Fritillaria pallidiflora Schrenk. Their structures were established by spectroscopic techniques (IR, MS, 1D and 2D NMR)
Guoyu Li
exaly   +3 more sources

Steroidal saponins from the rhizomes of Polygonatum orientale

Phytochemistry, 1991
Abstract Two steroidal compounds were isolated from the fresh rhizomes of Polygonatum orientale and their structures elucidated as sceptrumgenin 3-O-β- d -lycotetraoside, akyrogenin 3-O-β- d -glucopyranosyl-(1→3)-[β- d -glucopyranosyl-(1→2)]-β- d -glucopyranosyl-(1→4)-β- d -galactopyranoside (spiroakyroside), on the basis of physical and chemical ...
YESILADA, E, HOUGHTON, PJ
openaire   +3 more sources