Results 161 to 170 of about 73,444 (214)

Steroidal Saponins From Sansevieria Trifasciata

Phytochemistry, 1996
The methanol extract of the whole plant of Sansevieria trifasciata has yielded 12 steroidal saponins, 10 of which are new constituents. The respective structures of the new compounds have been shown by the spectroscopic evidence, and alkaline- and acid-catalysed degradation.
Yoshihiro Mimaki, Minpei Kuroda, Yutaka Sashida   +2 more
exaly   +3 more sources

Steroidal saponins from Datura metel

Steroids, 2017
Datura metel L. (Solanaceae) is an annual herb that has been widely used in the traditional medicine for the treatment of coughs, bronchial asthma, and rheumatism. Chemical investigation of an acidic methanol extract of the whole plants of D. metel resulted in the isolation of five new steroidal saponins (1-3, 5, and 6), named metelosides A-E, and four
Nguyen Thi, Mai, Nguyen Thi, Cuc, Hoang Le Tuan, Anh, Nguyen Xuan, Nhiem, Bui Huu, Tai, Chau Van, Minh, Tran Hong, Quang, Kwan Woo, Kim, Youn-Chul, Kim, Hyuncheol, Oh, Phan Van, Kiem   +10 more
openaire   +2 more sources

The Bioactivity of Saponins: Triterpenoid and Steroidal Glycosides

Drug Metabolism and Drug Interactions, 2000
Triterpenoid and steroidal glycosides, referred to collectively as saponins, are bioactive compounds present naturally in many plants. They have considerable potential as pharmaceutical and/or nutraceutical agents in natural or synthetic form.
A V, Rao, D M, Gurfinkel
openaire   +2 more sources

Steroidal saponins from Chlorophytum deistelianum

Planta Medica, 2016
Phytochemical investigation of the aerial parts of Chlorophytum deistelianum led to the isolation of four previously undescribed steroidal saponins called chlorodeistelianosides A-D with five known ones. Their structures were established mainly by extensive 1D and 2D NMR spectroscopic techniques and mass spectrometry as (25R)-3β-[(β-D-glucopyranosyl-(1→
Tabopda, Turibio Kuiate, Mitaine-Offer, Anne-Claire, Paululat, Thomas, Delemasure, Stéphanie, Dutartre, Patrick, Ngadjui, Bonaventure Tchaleu, Lacaille-Dubois, Marie-Aleth   +6 more
openaire   +3 more sources

Steroidal saponins from Dioscorea preussii

Fitoterapia, 2014
Three new steroidal saponins, named diospreussinosides A-C (1-3), along with two known ones (4, 5) were isolated from rhizomes of Dioscorea preussii. Their structures were elucidated mainly by 1D and 2D NMR spectroscopic analysis and mass spectrometry as (25S)-17α,25-dihydroxyspirost-5-en-3β-yl-O-α-L-rhamnopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→4)-β-D ...
Turibio Kuiate, Tabopda, Anne-Claire, Mitaine-Offer, Chiaki, Tanaka, Tomofumi, Miyamoto, Jean-François, Mirjolet, Olivier, Duchamp, Bonaventure Tchaleu, Ngadjui, Marie-Aleth, Lacaille-Dubois   +7 more
openaire   +2 more sources

Steroid saponins from Solanum laxum

Phytochemistry, 1996
Two new steroid saponins, named laxumins A and B, were isolated from the ethanolic extract of the aerial parts of Solanum laxum. These compounds were characterized, using mainly NMR spectroscopy, mass spectrometry and chemical methods, as (23S,25S)-spirost-5-en-3 beta, 15 alpha, 23-triol 3-O-{beta-D-glucopyranosyl-(1-->2)- beta-D-glucopyranosyl-(1-->4)-
F, Ferreira, S, Soulé, A, Vazquez, P, Moyna, L, Kenne   +4 more
openaire   +2 more sources

Steroidal saponins from Smilax lebrunii

Phytochemistry, 1992
Two new steroidal saponins, (25 R)-spirostan-3 beta-ol-6-one-3-O-[alpha-L-arabinopyranosyl (1----6)]-beta-D-glucopyranoside and (25 R)-spirostan-3 beta-ol-6-one-3-O-[beta-D-glucopyranosyl(1---4)] [alpha-L-arabinopyranosyl(1----6)]-beta-glucopyranoside, were isolated from the rhizomes of Smilax lebrunii.
Z H, Jia, Y, Ju
openaire   +2 more sources

Steroidal saponins from Asparagus acutifolius

Phytochemistry, 2007
Six new steroidal saponins (1-6) were isolated from the roots of A. acutifolius L., together with a known spirostanol glycoside (7). Their structures were elucidated mainly by extensive spectroscopic analysis (1D and 2D NMR, FABMS and HRESIMS). Compounds 4-7 demonstrated antifungal activity against the human pathogenic yeasts C. albicans, C.
Marc, Sautour, Tomofumi, Miyamoto, Marie-Aleth, Lacaille-Dubois   +2 more
openaire   +2 more sources

Steroidal saponins from Tribulus terrestris

Steroids, 2009
Five new steroidal saponins were isolated from the fruits of Tribulus terrestris. Their structures were fully established by spectroscopic and chemical analysis as (23S,25S)-5alpha-spirostane-24-one-3beta,23-diol-3-O-{alpha-l-rhamnopyranosyl-(1-->2)-O-[beta-d-glucopyranosyl-(1-->4)]-beta-d-galactopyranoside} (1), (24S,25S)-5alpha-spirostane-3beta,24 ...
Lan, Su, Gang, Chen, Sheng-Guang, Feng, Wei, Wang, Zhi-Feng, Li, Huan, Chen, Ying-Xue, Liu, Yue-Hu, Pei   +7 more
openaire   +2 more sources

Steroidal Saponins From Smilax officinalis

Phytochemistry, 1996
Three new steroidal saponins were isolated from the rhizomes of Smilax officinalis. The structures of these saponins were established by extensive spectral data, hydrolysis and chemical correlation as sarsasapogenin 3-O-beta-D-glucopyranosyl-(1-->4)-[alpha-L-arabinopyranosyl-(1-->6 )-beta- D-glucopyranoside, neotigogenin 3-O-beta-D-glucopyranosyl-(1 ...
José Paz Parente, Robson Roney Bernardo, Antonio Ventura Pinto   +2 more
exaly   +3 more sources