Massarigenin A (1) and papyracillic acids A (2) and B (3) were isolated from the endophytic fungus Microsphaeropsis sp. Their structures were elucidated by multidimensional nuclear magnetic resonance spectroscopy; the structure of massarigenin A (1) was also confirmed by X-ray crystallography. The absolute configuration of massarigenin A (1) was established by means of circular dichroism (CD) spectroscopy and time-dependent density functional theory (TDDFT) calculations. The impact of intermolecular hydrogen bonds detected in the crystal packing of 1 on CD spectra measured in the solid state was also investigated.
|Autori interni:||PESCITELLI, GENNARO|
|Autori:||Hussain H; Ahmed I; Schulz B; Draeger S; Floerke U; Pescitelli G; Krohn K|
|Titolo:||Solid-State Circular Dichroism and Hydrogen Bonding: Absolute Configuration of Massarigenin A from Microsphaeropsis sp.|
|Anno del prodotto:||2011|
|Digital Object Identifier (DOI):||10.1002/chir.20985|
|Appare nelle tipologie:||1.1 Articolo in rivista|