Results 81 to 90 of about 1,047 (116)

Two New Hemiterpene Glycosides From the Leaves of Ilex rotunda. Thunb

Archives of Pharmacal Research, 2012
Chromatographic separation of the 80% MeOH extract of the leaves of Ilex rotunda (IR) led to isolation of two new hemiterpene glycosides, tentatively named as rotundarpenoside A (1) and rotundarpenoside B (2), along with five known caffeoyl derivatives (3-7).
Min Won Lee, Myeong Hwan Oh, Han Hyuk Kim   +2 more
exaly   +3 more sources

Anti-Oxidative and Anti-Inflammatory Activities of Caffeoyl Hemiterpene Glycosides From Spiraea prunifolia

Phytochemistry, 2013
Activity guided isolation of a Spiraea prunifolia extract yielded five caffeoyl hemiterpene glycosides: 4'-(6-O-caffeoyl-β-D-glucopyranosyl)-2'-methyl butyric acid, 1-O-caffeoyl-6-O-(4'-hydroxy-2'-methylene-butyroyl)-β-D-glucopyranoside, 1,2-O-dicaffeoyl-6-O-(4'-hydroxy-2'-methylene-butyroyl)-β-D-glucopyranoside, 1-O-caffeoyl-6-O-(4'-caffeoyl-2 ...
Min Won Lee, Myeong Hwan Oh, Han Hyuk Kim   +2 more
exaly   +3 more sources

Hemiterpene glucosides and other constituents from Spiraea canescens

Phytochemistry, 2009
Five glycosides, 2-(trans-cinnamoyloxy-methyl)-1-butene-4-O-beta-D-glucopyranoside (1), 4-(6'-O-trans-cinnamoyl)-(2-hydroxymethyl-4-hydroxy-butenyl-beta-D-glucopyranoside (2), 6''-O-trans-p-coumaroyl-(4-hydroxybenzoyl)-beta-D-glucopyranoside (3), 6'-O-(4-methoxy-trans-cinnamoyl) alpha/beta-D-glucopyranose (4) 6'-O-(4''-methoxy-trans-cinnamoyl ...
M Iqbal, Choudhary, Nadra, Naheed, Ahmed, Abbaskhan, Sajjad, Ali, , Atta-ur-Rahman   +4 more
openaire   +2 more sources

New Hemiterpene Glycosides in Vitis vinifera Wine

Journal of Natural Products, 1997
Two new hemiterpene glycosides were isolated from a Vitis vinifera cv. Gewurztraminer wine and were identified by mass spectrometry and NMR spectroscopy as O-β-d-apiofuranosyl-(1→6)-O-β-d-glucopyranosides of 3-methyl-2-butenol (1) and of 3-methyl-3-butenol (3).
Baltenweck-Guyot, R., Trendel, J.M., Albrecht, P., Schaeffer, Alex   +3 more
openaire   +2 more sources

Hemialboside, a hemiterpene glucoside from Lamium album

Phytochemistry, 1995
Abstract Hemialboside, (S)-1- hydroxy-3-methylbut-3-en-2-yl -β- d -glucopyranoside , was isolated from Lamium album and its structure elucidated from 1H and 13CNMR spectral data.
Søren Damtoft, Søren Rosendal Jensen
openaire   +1 more source

Coumarin-hemiterpene ethers from Artemisia species

Phytochemistry, 1985
Abstract In addition to a known derivative, five new coumarin-hemiterpene ethers were isolated from the leaves of Artemisia laciniata, A. armeniaca and A. tanacetifolia and identified by 1H NMR and, in part, by 13C NMR spectroscopy. The coumarin patterns are characterized particularly by compounds with a hydroxylated and saturated isoprenoid unit ...
Géza Szabó, Harald Greger, Otmar Hofer
openaire   +1 more source

A new class of mealybug pheromones: a hemiterpene ester in the sex pheromone of Crisicoccus matsumotoi

Naturwissenschaften, 2012
Mealybugs, which include several agricultural pests, are small sap feeders covered with a powdery wax. They exhibit clear sexual dimorphism; males are winged but fragile and short lived, whereas females are windless and less mobile. Thus, sex pheromones emitted by females facilitate copulation and reproduction by serving as a key navigation tool for ...
Jun, Tabata, Yutaka, Narai, Nobuo, Sawamura, Syuntaro, Hiradate, Hajime, Sugie   +4 more
openaire   +2 more sources

New hemiterpene and furolactone-type lignan glycosides from Securidaca inappendiculata Hassk

Phytochemistry Letters, 2020
Abstract One new hemiterpene glycoside, securiterpenoside G (1), one new furolactone-type lignan glycoside, (7R,8R,8′S)-glaberide I 4-O-β-D-glucopyranosyl-(1‴→4″)-O-β-D-glucopyranoside (2), along with two known lignan glycosides, (7R,8R,8′S)-glaberide I 4-O-β-D-glucopyranoside (3) and (7S,7′S,8R,8′R)-4,4′-dihydroxy-3,5,3′,5′tetramethoxy-7,9′:7′,9 ...
Can Yang, Zhi Wang, Yan Qiu, Haiyan Zha, Xuedong Yang   +4 more
openaire   +1 more source

Hepatoprotective hemiterpene glycosides from the rhizome of Cibotium barometz (L.) J. Sm

Phytochemistry, 2017
Five previously undescribed hemiterpene glycosides, cibotiumbarosides E-I, and two known hemiterpene glucosides, were isolated from the rhizome of Cibotium barometz (L.) J. Sm. The structures of cibotiumbarosides E-I were established by 1D and 2D NMR spectroscopic analyses and HRMS.
Mei-Ping, Xie, Lan, Li, Hua, Sun, An-Qi, Lu, Bo, Zhang, Jian-Gong, Shi, Dan, Zhang, Su-Juan, Wang   +7 more
openaire   +2 more sources

6-Prenyloxy-7-methoxycoumarin, a coumarin-hemiterpene ether from Carduus tenuiflorus

Phytochemistry, 1992
Abstract From the acetone extract of Carduus tenuiflorus , a new coumarin-hemiterpene ether was isolated, which was identified as 6-(3,3-dimethylallyloxy)-7-methoxycoumarin. The synthesis of this coumarin and that of its positional isomer 7-(3,3-dimethylallyloxy)-6-methoxycoumarin were carried out from esculetin.
Luz Cardona, Begoña García, Pedro José R., José Pérez   +3 more
openaire   +1 more source