79768-25-5Relevant academic research and scientific papers
Transannular cyclization of epoxycaryophyllenes catalyzed by Ti III: An efficient synthesis of tricyclo[6.3.0.02,5] undecanes
Barrero, Alejandro F.,Herrador, M. Mar,Quilez Del Moral, Jose F.,Arteaga, Pilar,Sanchez, Elena M.,Arteaga, Jesus F.,Piedra, Maria
, p. 3434 - 3441 (2007/10/03)
The transannular cyclization of epoxycaryophyllenes 2-7 catalyzed by TiIII has been investigated. This cyclization led to alcohols 8-15, all of them possessing a tricyclo[6.3.0.02,5]undecane skeleton. All of these compounds present pleasant aromatic properties. The cyclization takes place with high yields (> 80 %) and via the αα or ββ conformation of the intermediate radical I. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
Betulenols from Betula species
Demirci, Betuel,Huesnue Can Baser,Oezek, Temel,Demirci, Fatih
, p. 490 - 493 (2007/10/03)
The essential oils from buds of five Betula species growing in Turkey were investigated by GC-MS. A major component in the essential oils was shown to be 14-hydroxy-β-caryophyllene (6). The structure of β-betulenal (12) which was isolated from Betula essential oils was also confirmed by synthesis. Chemical reactions yielded 14-acetoxy-β-aryophyllene (15), 14- hydroxy-isocaryophyllene (10) and its acetate (14), giving evidence to the natural occurrence in Betula species of the formerly known α-betulenol acetate (3), β-betulenol (2) and β-betulenol acetate (4), respectively. Compounds 6, 9, 10, 12, and 15 were evaluated for antimicrobial activity.
Stereochemistry of 14-hydroxy-β-caryophyllene and related compounds
Barrero,Molina,Oltra,Altarejos,Barragan,Lara,Segura
, p. 3813 - 3822 (2007/10/02)
The isomerization of β-caryophyllene (3), under treatment with SeO2, is described. Chemical correlations, between 3 and 14-hydroxy-β-caryophyllene (6) from Juniperus oxycedrus, are established. High resolution 1H NMR spectra and analysis by molecular mechanics of 3, 6 and 14-acetoxy-β-caryophyllene (7) indicate the existence of two conformational isomers, βα and ββ, in each compound. At 25°C, the βα conformer predominates in 3 and 7 but the ββ conformer predominates in 6. The higher percentage of 6ββ possibly derives from an intramolecular hydrogen bond. The treatment of 3, 6 and 7 with m-CPBA generates, in each case, two diastereomeric 4,5-epoxi-derivatives. The epoxides obtained from 6 have been isolated and analysed separately.
CONFORMATIONAL ISOMERS OF 14-HYDROXY-9-EPI-β-CARYOPHYLLENE ISOLATED FROM THE WOOD OF JUNIPERUS OXYCEDRUS
Barrero, Alejandro F.,Snchez, Juan F.,Ferrol, Nuria
, p. 247 - 250 (2007/10/02)
A nwe sesquiterpene alcohol has been isolated from the essential oil of the wood of Juniperus oxycedrus L. and indetified through its spectroscopic properties as 14-hydroxy-9-epi-β-caryophyllene.Dynamic 1HNMR measurements have revealed two major conformational isomers in roughly equal amounts at room temperature, with an interconvertion barrier of 17.5 Kcal/mol.
179. New Carbonyl Compounds in the High-Boiling Fraction of Lavender Oil
Kaiser, Roman,Lamparsky, Dietmar
, p. 1843 - 1849 (2007/10/02)
In addition to the sesquiterpenoid compounds reported in (1) the in-depth analysis of lavender oil also led to the identification of new constituents with caryophyllane (1-6), cedrane (7 and 8) and other skeletons (9-12).Spectroscopic properties as well as partial syntheses of these compounds are discussed.
