title: Unusual compounds from exudates of Dionysia diapensifolia and D. gaubae var. megalantha (Primulaceae).
abstract: Exudates of Dionysia diapensifolia yielded (R)-(+)-3-acetoxy-3-phenyl-propiophenone as a new natural product with a basic dihydrochalcone structure, which was elucidated unequivocally by mass spectrometry and NMR spectroscopy. The sesquiterpenoidcarissone was found as the major compound in the exudate of D. gaubae var. megalantha. Sesquiterpenoids have so far not been described as exudate constituents of Primula and Dionysia. Structural identifications are discussed in detail, and the significance of the occurrence of these unusual compounds in exudates of Primulaceae is shortly addressed.
authors: Chemodiversity Research Group, Department of Systematic and Evolutionary Botany, University of Vienna, Rennweg 14, A-1030 Vienna, Austria. tshering.doma.bhutia@univie.ac.at
authors: Tshering Doma
authors: TD
authors: Bhutia
authors: Karin M
authors: KM
authors: Valant-Vetschera
authors: Eberhard
authors: E
authors: Lorbeer
authors: Lothar
authors: L
authors: Brecker