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Journal Articles Helvetica Chimica Acta Year : 2016

Two New Retigerane-Type Sesterterpenoids from the Lichen Leprocaulon microscopicum

Abstract

Two new sesterterpenes, 1 and 2, have been isolated from the lichen Leprocaulon microscopicum. In addition to classic chromatographic methods, a liquid-liquid chromatography technique, namely centrifugal partition chromatography (CPC) was applied for the purification of compound 2. The structures were determined by analyses of mass spectrometry and 1D- and 2D-NMR data. The relative configuration of the isolated compounds was assigned on the basis of 2D-NOESY experiments. The two compounds possess a rare pentacyclic carbon skeleton typical for lichen metabolism, and quite unusual in the vegetal kingdom.
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Dates and versions

hal-01274108 , version 1 (20-05-2016)

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Marion Millot, Marie Martin-De-Lassalle, Marylene Chollet-Krugler, Yves Champavier, Lengo Angèle Mambu, et al.. Two New Retigerane-Type Sesterterpenoids from the Lichen Leprocaulon microscopicum. Helvetica Chimica Acta, 2016, 99 (2), pp.169--173. ⟨10.1002/hlca.201500225⟩. ⟨hal-01274108⟩
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