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|Title:||Tricyclic and spirobicyclic norsesquiterpenes from the endophytic fungus Pseudolagarobasidium acaciicola|
Chulabhorn Graduate Institute
Chulabhorn Research Institute
South Carolina Commission on Higher Education
|Citation:||European Journal of Organic Chemistry. Vol.2014, No.19 (2014), 3976-3980|
|Abstract:||The new tricyclic and spirobicyclic norsesquiterpenes 1 and 2 and the new nor-chamigrane endoperoxide 3, together with the known sesquiterpenes steperoxide A (4), merulin B (5), and merulin C (6), were isolated from the endophytic fungus Pseudolagarobasidium acaciicola. The structures and absolute configurations of 1-3 were determined by analysis of spectroscopic data, as well as by single-crystal X-ray analysis. Compound 1 has a previously unobserved 6/5/5 fused tricyclic ring system, in which the five-membered (middle) ring is, as revealed by X-ray analysis, perpendicular to a six-membered ring. Compound 2 possesses a hitherto unknown 5/6 fused spirobicyclic ring system. The cytotoxic activities of the isolated compounds 1-6 were evaluated. Tricyclic and spirobicyclic norsesquiterpenes 1 and 2 were isolated from the endophytic fungus Pseudolagarobasidium acaciicola. The absolute configurations of 1 and 2 were addressed by single-crystal X-ray analysis. Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.|
|Appears in Collections:||Scopus 2011-2015|
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