Irigermanone,a Noriridal with Unprecedented Methylketone Function,from Iris germanica |
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| Authors: | Olivier Potterat Carmela Herzog Melanie Raith Samad Nejad Ebrahimi Matthias Hamburger |
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| Affiliation: | 1. University of Basel, Division of Pharmaceutical Biology, Klingelbergstrasse 50, CH‐4056 Basel, (phone: +41‐61‐2671534;2. fax: +41‐61‐2671474);3. Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G.?C., Evin 1983963113, Tehran, Iran |
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| Abstract: | A new iridal, irigermanone ( 1 ) and nine known congeners, 2 – 10 , respectively, have been isolated from the dried rhizomes of German iris (Iris germanica). The structure of 1 was established by spectroscopic methods including HR‐ESI‐MS, 1D‐ and 2D‐NMR, and electronic circular dichroism (ECD) spectroscopy. Compound 1 is a structurally unique noriridal, and it possesses an unprecedented methylcarbonyl group instead of the α,β‐unsaturated aldehyde function typical for this group of triterpenes. |
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| Keywords: | Iris germanica Iridals Irigermanone Electronic circular dichroism (ECD) spectroscopy |
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