Results 181 to 190 of about 8,498 (225)

Iridoids from Pentas lanceolata

Journal of Natural Products, 2007
From the aerial parts of Pentas lanceolata, belonging to the family Rubiaceae, a series of iridoid glucosides was isolated by preparative HPLC. Seven iridoid glucosides were identified. Besides asperuloside and asperulosidic acid, characteristic iridoids for Rubiaceae, five new iridoids were isolated, namely, tudoside (1), 13R-epi-gaertneroside (2 ...
Jan, Schripsema, Geisa Paulino, Caprini, Rob, van der Heijden, Raoul, Bino, Ric, de Vos, Denise, Dagnino   +5 more
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Iridoids from Gentiana loureirii

Phytochemistry, 2009
Iridoid glycosides, 2',3',6'-tri-O-acetyl-4'-O-trans-p-(O-beta-d-glucopyranosyl)coumaroyl-7-ketologanin (1), 2'-O-caffeoylloganic acid (2), 2'-O-p-hydroxybenzoylloganic acid (3), 2'-O-trans-p-coumaroylloganic acid (4), and 2'-O-cis-p-coumaroylloganic acid (5), were isolated from whole plants of Gentiana loureirii along with six known iridoids, 7 ...
Min, Wu, Ping, Wu, Meifang, Liu, Haihui, Xie, Yueming, Jiang, Xiaoyi, Wei   +5 more
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Iridoids of Rauwolfia grandiflora☆

Phytochemistry, 1994
Abstract From the bark of Rauwolfia grandiflora a new monoterpenoid δ-lactone, isoboonein, was isolated together with boonein, loganin and loganic acid. The structure of isoboonein, established by spectroscopical methods, was confirmed by partial synthesis from loganic acid.
BIANCO, Armandodoriano, Angelo De Luca, Raffaele Antonio Mazzei, NICOLETTI, Marcello, PASSACANTILLI, Pietro, Roberto Alves De Lima   +5 more
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Iridoids from Lippia graveolens

Phytochemistry, 1998
An investigation of the leaves of Lippia graveolens from Guatemala provided 10 iridoid and secoiridoid glucosides as well as their ester derivatives. Minor constituents were loganin, secologanin, secoxyloganin, dimethylsecologanoside, loganic acid, 8-epi-loganic acid and caryoptoside.
RASTRELLI, Luca, A. Caceres, C. Morales, DE SIMONE, Francesco, AQUINO, Rita Patrizia   +4 more
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Iridoids from Dunnia sinensis

Phytochemistry, 2000
A plumieride type iridoid glucoside, dunnisinoside, and a non-glucosidic iridoid, dunnisinin, were isolated from the leaves of Dunnia sinensis. Their structures were established by 1D and 2D NMR and FABMS experiments.
X, Wei, H, Xie, X, Ge, F, Zhang
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Iridoids from Premna latifolia

Planta Medica, 1981
Two iridoids, 7-deoxyloganic acid also known as bisdesoxydihydromonotropein and geniposidic acid, from Premna latifolia Roxb. (Verbenaceae) have been reported.
C B, Rao, E K, Vijayakumar, K V, Vijayalakshmi   +2 more
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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
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Iridoids, iridoid-triterpenoid congeners and lignans from Desfontainia spinosa

Phytochemistry, 1986
Abstract The leaves of Desfontainia spinosa ; were found to contain the three known seco-iridoids secoxyloganin, dimethyl secologanoside and sweroside in addition to the three iridoids loganin, loganetin and loganic acid previously reported. In addition a novel loganin derivative 7- O -( p -coumaroyl)-loganin was isolated. The leaves were also found
Peter J. Houghton, Lu Ming Lian
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Iridoid compounds fromBoschniakia rossica

Archives of Pharmacal Research, 1999
Four iridoid compounds were isolated from methanol extract of Boschniakia rossica by repeated column chromatography. Their structures were determined as boschnaloside (1), boschnarol (2), bosnarol methylether (3), and 7-deoxy 8-epiloganic acid (4), respectively. Compound 2, 3, and 4 were isolated for the first time from this plant.
Z Z, Yin, H S, Kim, Y H, Kim, J J, Lee
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Iridoids from Crescentia alata

Journal of Natural Products, 2007
Four new 11-nor-iridoids, 6beta,7beta,8alpha,10-tetrahydroxy-cis-2-oxabicyclo[4.3.0]nonan-3-one (1), 6beta,7beta,8alpha,10-tetra-p-hydroxybenzoyl-cis-2-oxabicyclo[4.3.0]nonan-3-one (2), 1beta,6beta,7alpha,8alpha,10-pentahydroxy-cis-2-oxabicyclo[4.3.0]nonane (3), and 6beta-hydroxy-2-oxabicyclo[4.3.0]Delta8-9-nonen-1-one (4), were isolated from the pulp ...
María Guadalupe, Valladares, María Yolanda, Rios   +1 more
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