Koegl; Boer, Recueil des Travaux Chimiques des Pays-Bas, 1935, vol. 54, p. 779,788
作者:Koegl、Boer
DOI:——
日期:——
Reaction mechanism change in the Lewis acid catalyzed perezone-pipitzol transformation
作者:I. H. Sanchez、R. Yanez、R. Enriquez、P. Joseph-Nathan
DOI:10.1021/jo00326a052
日期:1981.6
A new approach to the cedrane ring system via intramolecular [4 + 2] tropone-olefin cycloaddition. Total synthesis of (.+-.)-.alpha.- and .beta.-pipitzol
α and β-pipitzols isolated from the roots of Perezia cuernavacana and obtained by thermal rearrangement of perezone, (II), have been shown to be sesquiterpenes with structures IIIa and IVa related to cedrene (XXIII). The structure of perezinone has been revised and established as shown in formula XXVI.