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C12 stereochemistry of α- and β-levantenolide carbon-13 NMR spectra of labdanolic diterpenes

AuthorsGonzález, Antonio G.; Freire, Raimundo ; Francisco, Cosme G. ; Salazar, José A.; Hernández, Rosendo ; Suárez, Ernesto
Issue DateMay-1976
CitationTetrahedron Letters 17(22): 1897-1898 (1976)
AbstractFrom Turkish tobacco Giles and Schumacher (1) isolated the two diterpene lactones β- and α-levantenolide, for which they proposed structures 1 and 2 respectively on the basis of chemical degradative work and spectral data.
As shown below, the stereochemistry of these compounds at C12 must be revised in the light of spectroscopic studies.
Description2 pages, 1 table, 1 scheme.
Publisher version (URL)http://dx.doi.org/10.1016/S0040-4039(00)92957-5
Appears in Collections:(IPNA) Artículos
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