Results 111 to 120 of about 1,184 (147)

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
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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
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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
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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).
Manh Heun, Kim, Kwan Hee, Park, Myeong Hwan, Oh, Han Hyuk, Kim, Kang In, Choe, Sang Hee, Park, Min Won, Lee   +6 more
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Rapid discovery and biomimetic syntheses of two unusual hemiterpene-quassinoid adducts from Brucea javanica

Chinese Chemical Letters
Zhi-Kang Duan, Mei-Ya Lian, Shu-Hui Dong, M. Bai, Xiao-Xiao Huang, Shao-Jiang Song   +5 more
semanticscholar   +2 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 ...
Sang Hee, Park, Kwan Hee, Park, Myeong Hwan, Oh, Han Hyuk, Kim, Kang In, Choe, So Ra, Kim, Kwang Jun, Park, Min Won, Lee   +7 more
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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
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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
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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
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Metabolomics and transcriptomics of pheromone biosynthesis in an aggressive forest pest Ips typographus.

Insect Biochemistry and Molecular Biology, 2021
Eurasian spruce bark beetle, Ips typographus, is a destructive pest in spruce forests. The ability of I. typographus to colonise host trees depends on its massive aggregation behaviour mediated by aggregation pheromones, consisting of 2-methyl-3-buten-2 ...
Rajarajan Ramakrishnan, J. Hradecký, A. Roy, B. Kalinová, Rya C. Mendezes, J. Synek, Jaromír Bláha, A. Svatoš, Anna Jirošová   +8 more
semanticscholar   +1 more source