Zur Cyclisierung von Dehydrolinalylacetat in Gegenwart von Zinkchlorid
作者:Hugo Strickler、John B. Davis、G�nther Ohloff
DOI:10.1002/hlca.19760590435
日期:1976.6.2
ZnCl2-catalysed cyclisation of dehydrolinalyl acetate.
ZnCl 2催化的乙酸脱氢芳基酯的环化。
Total Synthesis of ( ± )-α-Cubebene and ( ± )-β-Cubebene
作者:Edward Piers、Ronald W. Britton、William De Waal
DOI:10.1139/v71-003
日期:1971.1.1
An efficient totalsynthesis of the racemic forms of the novel tricyclic sesquiterpenes α-cubebene (1) and β-cubebene (2) is described. The key step of this synthesis involved the cupric sulfate catalyzed intramolecular cyclization of the olefinic diazoketone 3, which produced, in high yield, ( ± )-β-cubebene norketone (24) and ( ± )-1,6-epi-β-cubebene norketone (25), in a ratio of approximately 3:5
The chemistry of terpenes. Part II. The physical properties of some cis–trans substituted cyclohexanes
作者:W. Cocker、P. V. R. Shannon、P. A. Staniland
DOI:10.1039/j39660000946
日期:——
The preparation of the six racemic forms of menthane is described and their n.m.r. spectra discussed. Specific chemical routes to (–)-cis- and (+)-trans-carane are described; the properties of these isomers can be explained by their stereochemistry.
Abstract New sesquiterpenoids with 4,5-secoeudesmane and cyperolone carbon skeletons were isolated from Cyperusrotundus , and characterized by spectroscopic analysis. The structures were confirmed by synthesis from (+)-dihydrocarvone and (+)-cyperolone.