Results 221 to 230 of about 46,895 (288)

Carlina species as a new source of bioactive pentacyclic triterpenes

Industrial Crops and Products, 2016
Maciej Strzemski, Magdalena Wôjciak, Ireneusz Sowa   +2 more
exaly   +2 more sources

Triterpene Biosynthesis in Plants

Annual Review of Plant Biology, 2014
The triterpenes are one of the most numerous and diverse groups of plant natural products. They are complex molecules that are, for the most part, beyond the reach of chemical synthesis. Simple triterpenes are components of surface waxes and specialized membranes and may potentially act as signaling molecules, whereas complex glycosylated triterpenes ...
Ramesha Thimmappa, Katrin Geisler, Thomas Louveau, Paul OMaille, Anne Osbourn   +4 more
openaire   +2 more sources

Triterpenes and triterpene glycosides from Paradrymonia macrophylla

Phytochemistry, 1996
Abstract Seven pentacyclic triterpenes and triterpene glycosides have been isolated from the stems and roots of Paradrymonia macrophylla and their structures elucidated by means of 1H and 13C NMR spectroscopy. Three of them are described for the first time as natural products, namely: 2α,3β,19α-trihydroxy-24-oxo-urs-12-en-28-oic acid (24-epi ...
Christian Terreaux, Marc P. Maillard, Mahabir P. Gupta, Kurt Hostettmann   +3 more
openaire   +1 more source

A Reinvestigation of Maprounea Triterpenes

Journal of Natural Products, 1995
Anti-HIV activity and the inhibition of phorbol ester receptor binding activity in two species of Maprounea were traced to small amounts of highly potent phorbol esters of the daphnane type. The triterpenes previously isolated from this genus were found to be devoid of biological activity when scrupulously purified.
J A, Beutler, Y, Kashman, M, Tischler, J H, Cardellina, G N, Gray, M J, Currens, M E, Wall, M C, Wani, M R, Boyd   +8 more
openaire   +2 more sources

Triterpene und Triterpen-Saponine

1955
Triterpene sind Naturstoffe mit 30 C-Atomen. Der Aufbau ihres Molekuls folgt der „Isoprenregel“, d. h. das Kohlenstoffskelet last sich in 6-Isoprenreste zerlegen (s. die Formeln I, III, IV, V). Die Mannigfaltigkeit der Korperklasse wird durch die Abanderungen des Kohlenstoffskelets, durch Zahl und Stellung der Doppelbindungen und der ...
M. Steiner, H. Holtzem
openaire   +1 more source

Protective effect of triterpenes of Ganoderma lucidum on lipopolysaccharide-induced inflammatory responses and acute liver injury.

Cytokine, 2019
Ganoderma lucidum is a popular medicinal mushroom, which has been used as therapeutic for centuries in traditional Chinese medicine. Although G. lucidum showed strong protective effects in prevention or treatment of a variety of inflammatory diseases ...
Zhongpeng Hu, R. Du, L. Xiu, Z. Bian, Chao-Mei Ma, N. Sato, M. Hattori, Haochi Zhang, Yanchen Liang, Shuixing Yu, Xiao Wang   +10 more
semanticscholar   +1 more source

The potential of click reactions for the synthesis of bioactive triterpenes.

Bioorganic & Medicinal Chemistry Letters, 2019
Click reactions between alkynes and azides using the privileged scaffold of triterpenes have been of interest for biological chemistry. Many publications deal with the synthesis of novel bioactive molecules; these conjugates have also been used for ...
R. Csuk, H. Deigner
semanticscholar   +1 more source

Analysis and determination of phytosterols and triterpenes in different inbred lines of Djulis (Chenopodium formosanum Koidz.) hull: A potential source of novel bioactive ingredients.

Food Chemistry, 2019
Djulis (Chenopodiun formosaneum Koidz.,), pseudo-cereal crop emerged as a potential source of functional ingredients, was used to identify phytosterols and triterpenes from seven inbred lines of Djulis hull using GC-MS.
Chin-yuan Huang, Y. Chu, K. Sridhar, P. Tsai   +3 more
semanticscholar   +1 more source

Pentacyclic triterpenes: New tools to fight metabolic syndrome.

Phytomedicine, 2018
BACKGROUND Metabolic syndrome is a combination of dysregulated cardiometabolic risk factors characterized by dyslipidemia, impaired glucose tolerance, insulin resistance, inflammation, obesity as well as hypertension.
H. Sharma, P. Kumar, R. Deshmukh, A. Bishayee, Sunil Kumar   +4 more
semanticscholar   +1 more source

Triterpenes and triterpene glycosides from the leaves of Ilex rotunda

Phytochemistry, 1993
Abstract Two new triterpenes, ilexolic acid A and B, and seven new saponins, ilexosides XXXIII–XXXIX, together with the known saponin rotungenoside were isolated from the fresh leaves of Ilex rotunda , and their structures elucidated on the basis of chemical and physicochemical evidence.
Kayoko Amimoto, Kazuko Yoshikawa, Shigenobu Arihara   +2 more
openaire   +1 more source