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Article Abstract
Three unusual sesterterpenoids featuring unprecedented rearranged colquhounane (C) and tetranorcolquhounane (C) frameworks, colquhounoids E () and F () and norcolquhounoid F (), were isolated from a Lamiaceae medicinal plant var. . Their structures were elucidated by spectroscopic analysis and quantum chemical calculations. A biomimetic inspired regioselective cyclopropane cleavage was achieved under acidic conditions. The immunosuppressive activities of these new sesterterpenoids were also evaluated.
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| http://dx.doi.org/10.1021/acs.jnatprod.3c00553 | DOI Listing |
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