Results 351 to 360 of about 92,534 (385)

Structure and stability of common sesquiterpenes

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2002
We present data on the electronic structure, polarity and relative stability of 14 common sesquiterpenes. The data were obtained by a combination of spectroscopic and high-level theoretical analysis. The discussion also includes comments on possible implication of molecular properties for physiological behaviour.
Novak, I., Kovač, B., Kovačevi, G.
openaire   +3 more sources

Sesquiterpenes—IV

Tetrahedron, 1963
Abstract A simple qualitative procedure is outlined for the conformational analysis of cycloheptane derivatives with particular attention to the natural perhydroazulenes. The procedure allows discrimination amongst different configuration and conformational isomers on grounds of thermodynamic stability.
openaire   +2 more sources

Anti-inflammatory sesquiterpenes and sesquiterpene dimers fromChloranthus fortunei

Journal of Asian Natural Products Research, 2012
A novel lindenane sesquiterpene with an unprecedented 18-membered triester ring, named chlorafortulide (1), along with one known lindenane sesquiterpene (2) and nine known lindenane sesquiterpene dimers (3-11), was isolated from the whole plant of Chloranthus fortunei.
Masayoshi Oyama, Mi Zhang, Ling-Yi Kong, Jun Luo, Munekazu Iinuma, Jun-Song Wang, Tetsuro Ito, Chao Guo   +7 more
openaire   +3 more sources

Lessons from 1,3-Hydride Shifts in Sesquiterpene Cyclizations.

Angewandte Chemie, 2016
Stereospecifically labelled precursors were subjected to conversion by seven bacterial sesquiterpene cyclases to investigate the stereochemistry of their initial 1,10-cyclisation-1,3-hydride shift cascades.
Jan Rinkel, P. Rabe, P. Garbeva, Jeroen S. Dickschat   +3 more
semanticscholar   +1 more source

Sesquiterpene Lactone Mix

2003
The sesquiterpene lactone mix (SL mix) consists of 3 allergens: alantolactone, costunolide, dehydrocostus lactone.
Paulsen, E., Andersen, K.E.
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Sesquiterpene Phenylpropanoid and Sesquiterpene Chromone Derivatives from Ferula pallida

Journal of Natural Products, 2000
Four novel compounds-two sesquiterpene phenylpropanoid derivatives, pallidones G (1) and H (2), and two sesquiterpene chromone derivatives, pallidones I (3) and J (4)-have been isolated from the roots of Ferula pallida. Their structures were determined on the basis of NMR and HREIMS evidence.
Gisho Honda, Yoshihisa Takaishi, Michiho Itoh, Olimjon K. Kodzhimatov, Bao-Ning Su, Ozodbek Ashurmetov, Yoshio Takeda   +6 more
openaire   +3 more sources

Recent studies on sesquiterpenes

Pure and Applied Chemistry, 1970
Abstract
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ChemInform Abstract: Sesquiterpene Lactones of the Umbelliferae

ChemInform, 1986
Abstract A survey of sesquiterpene lactones from the species of Umbelliferae is presented. The structures based on predominantly undescribed stereostructural types were derived for the majority of these lactones.
M. Budesinsky, M. Holub
openaire   +3 more sources

Diterpenes, Sesquiterpenes, and a Sesquiterpene−Coumarin Conjugate from Jatropha integerrima

Journal of Natural Products, 2009
Five new compounds, 2alpha-hydroxyjatropholone (1), 2beta-hydroxyjatropholone (2), 1,5-dioxo-2,3-dihydroxyrhamnofola-4(10),6,11(18),15-tetraene (3), 2-keto-5-hydroxyguai-3,11-diene (4), and a sesquiterpene-coumarin conjugate, jatrophadioxan (5), and nine known compounds have been isolated from the roots of Jatropha integerrima.
Somyote Sutthivaiyakit, Wantana Mongkolvisut, Palangpon Kongsaeree, Samran Prabpai   +3 more
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Sesquiterpenes of the liverwort Scapania undulata

Phytochemistry, 2004
The essential oil of the liverwort Scapania undulata, collected in the Harz mountains, Northern Germany, was analysed by gas chromatography (GC), GC-mass spectrometry (MS) and several new components were isolated and investigated by various NMR techniques.
Claudia Paul, Adewale M. Adio, Petra Kloth, Wilfried A. König   +3 more
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