Results 181 to 190 of about 6,172 (217)

Iridoid glycoside biosynthesis in Penstemon secundiflorus. Another H-5, H-9 trans-iridoid glycoside

Phytochemistry, 1998
Isolation and characterization of the new iridoid 10-hydroxy-(5 alpha H)-6-epidihydrocornin from Penstemon secundiflorus (Scrophulariaceae) is described. In biosynthetic experiments, deoxyloganic acid was incorporated into the trans-fused iridoid glycosides (5 alpha H)-6-epidihydrocornin and 10-hydroxy-(5 alpha H)-6-epidihydrocornin in P. secundiflorus.
R E, Krull, F R, Stermitz, H, Franzyk, S R, Jensen   +3 more
openaire   +2 more sources

ChemInform Abstract: IRIDOIDS. VIII. STEREOSELECTIVE SYNTHESIS OF IRIDOID GLYCOSIDES

Chemischer Informationsdienst, 1977
AbstractSynthesen und Spaltreaktionen an Iridoidglykosiden sowie entsprechenden Aglykonen (I)‐(III) werden diskutiert.
L. F. TIETZE, U. NIEMEYER, P. MARX
openaire   +1 more source

Iridoid Glycosides from Hedyotis corymbosa

Helvetica Chimica Acta, 2007
AbstractThree new iridoid glycosides, hedycorysides A–C (1–3, resp.), were isolated from the whole plant of Hedyotis corymbosa (Linn.) Lam., along with four known compounds. Their structures were elucidated by extensive 1D‐ and 2D‐NMR analysis, as well as by HR‐ESI‐MS experiments. The three new compounds are the first benzoylated geniposide derivatives
Wei Jiang, Li‐Sha Kuang, Ai‐Jun Hou, Min Qian, Ji‐Zong Li   +4 more
openaire   +1 more source

Iridoid Glycosides from Barleria lupulina

Journal of Natural Products, 2015
Phytochemical investigation of an extract of the aerial part of Barleria lupulina resulted in the identification of four new iridoid glycosides (1-4), together with 14 known analogues (5-18). The structures of 1-4 were determined through 1D and 2D NMR spectroscopic data analysis, HRMS, and acid hydrolysis. This is the first report of iridoid glycosides
Ki Hyun, Kim, Yong Joo, Park, Kyu Hyuck, Chung, M L Richard, Yip, Jon, Clardy, Donald, Senger, Shugeng, Cao   +6 more
openaire   +2 more sources

Iridoid and phenolic glycosides from Morinda coreia

Phytochemistry, 2002
From the leaves and branches of Morinda coreia, six compounds [yopaaosides A-C, 10-O-acetylmonotropein, 6-O-acetylscandoside and 3,4,5-trimethoxyphenyl 1-O-beta-apiofuranosyl (1"-->6')-beta-glucopyranoside] have been isolated together with five known compounds. Structural elucidations were based on analyses of physical and spectroscopic data.
Tripetch, Kanchanapoom, Ryoji, Kasai, Kazuo, Yamasaki   +2 more
openaire   +2 more sources

Non-glycosidic iridoids from Cymbaria mongolica

Phytochemistry, 2002
Six non-glycosidic iridoids, i.e. (1R,4S,4aS,7S,7aS)-7-hydroxyl-4-hydroxy- methyl-7-methyl-1-methoxyl-1,4,4a,7a-tetrahydrocyclopenta[e]pyran-3-one (1), (1S,4R,4aS,7S,7aS)-7-hydroxyl-4-hydroxymethyl-7-methyl-1-methoxyl-1,4,4a,7a-tetrahydrocyclopenta[e]pyran-3-one (2), (1R,4R,4aS,7S,7aS)-7-hydroxyl-4-hydroxy-methyl-7-methyl-1-methoxyl-1,4,4a,7a ...
Jing Qiu, Dai, Zhong Li, Liu, Li, Yang
openaire   +2 more sources

Cardioactive iridoid glycosides from Eremophila species

Phytomedicine, 1997
Four iridoid glycosides isolated from different species of Eremophila (Myoporaceae) were tested for their effects on the Langendorff rat heart. Melampyroside (1), verminoside (2), ferruloylajugol (3) and catalpol (4) all significantly decreased contractile force in the isolated rat heart test.
M, Pennacchio, Y M, Syah, E L, Ghisalberti, E, Alexander   +3 more
openaire   +2 more sources

THE OCCURRENCE OF IRIDOID GLYCOSIDES IN THE SCROPHULARIACEAE

Acta Botanica Neerlandica, 1970
SUMMARY A study was made of the occurrence of iridoid glycosides (giving a colour reaction with anisidine) in the Scrophulariaceae. Aucuboside, catalpol and antirrhinoside were found in many species: in addition some hitherto unknown, presumably iridoid glycosides were found.
openaire   +1 more source

Iridoid Glycosides fromSaprosma ternatum

Planta Medica, 2010
Three new iridoid glycosides, epiasperuloside (1), epipaederosidic acid (2), and epipaederoside (3), together with 7 known compounds, were isolated from the 85% ethanol extract of the leaves of Saprosma ternatum Hook. f. Their structures were determined by application of spectroscopic (NMR, MS) and chemical methodologies.
Xiao-Ling, Lu, Xin, Cao, Xiao-Yu, Liu, Cong, Long, Jun-Hua, Liu, Qiang-Zhi, Xu, Bing-Hua, Jiao   +6 more
openaire   +2 more sources

Phenylpropanoid and iridoid glycosides from Pedicularis striata

Phytochemistry, 1991
A new phenylpropanoid glycoside, pedicularioside A, and five known glycosides, acteoside, isoacteoside, decaffeoylacteoside, echinacoside and 8-acetylharpagide, were isolated from whole plants of Pedicularis striata. On the basis of spectral and chemical evidence, pedicularioside A was shown to be 1'-O-beta-D-(3,4-dihydroxy-beta-phenyl)-ethyl-4'-O ...
Z M, Liu, Z J, Jia
openaire   +2 more sources