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. 1994 Jul;57(7):934-8.
doi: 10.1021/np50109a009.

Alectosarmentin, a new antimicrobial dibenzofuranoid lactol from the lichen, Alectoria sarmentosa

S R Gollapudi  1 , H Telikepalli, H B Jampani, Y W Mirhom, S D Drake, K R Bhattiprolu, D Vander Velde, L A Mitscher
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Alectosarmentin, a new antimicrobial dibenzofuranoid lactol from the lichen, Alectoria sarmentosa

S R Gollapudi et al. J Nat Prod. 1994 Jul.

Abstract

From the alcoholic extract of the lichen Alectoria sarmentosa, four compounds showing antimicrobial activity were isolated. Of these, (-)-usnic acid and physodic acid are well known lichen products, 8'-O-ethyl-beta-alectoronic acid [2] is believed to be an artifact formed during isolation and fractionation, and alectosarmentin [1] is a new natural product whose structure was shown, by spectroscopy and chemical transformations, to be that of a dibenzofuranoid lactol. The antimicrobial activity of these substances accounts for the activity of the lichen.

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