C. Seo, J. H. Sohn, S. M. Park, J. H. Yim, H. K. Lee and H. Oh 2008: Usimines A–C, bioactive usnic acid derivatives from the Antarctic lichen Stereocaulon alpinum. - Journal of Natural Products71(4): 710-712. [RLL List # 212 / Rec.# 30341] Keywords: USNIC ACID DERIVATIVES/ BIOACTIVE COMPOUNDS/ ANTARCTIC REGION/ BARTON PENINSULA/ KING GEORGE ISLAND
Abstract: ["Compounds 1-4 showed moderate inhibitory activity against therapeutically targeted protein tryosine phosphatase 1B (PTP1B)." However, in issue 71(7) of the journal, the lichen identification was corrected to be Ramalina terebrata!]