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Irigermanone, a Noriridal with Unprecedented Methylketone Function, from Iris germanica
Author(s) -
Potterat Olivier,
Herzog Carmela,
Raith Melanie,
Ebrahimi Samad Nejad,
Hamburger Matthias
Publication year - 2014
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.201300316
Subject(s) - chemistry , rhizome , terpene , circular dichroism , stereochemistry , aldehyde , iris (biosensor) , two dimensional nuclear magnetic resonance spectroscopy , organic chemistry , traditional medicine , medicine , computer security , biometrics , computer science , catalysis
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.