نتایج جستجو برای: isolation and structure elucidation

تعداد نتایج: 16988364  

Journal: :Planta medica 2010
Arlene Sy-Cordero Tyler N Graf Yuka Nakanishi Mansukh C Wani Rajesh Agarwal David J Kroll Nicholas H Oberlies

The gram-scale isolation of the major flavonolignan diastereoisomers from milk thistle ( Silybum marianum) extract provided an entree into the isolation of two related analogues that are present in extremely minute quantities. The isolation and structure elucidation of these two new compounds, which we have termed isosilybin C and isosilybin D due to their structural similarities to isosilybin ...

2014
Philipp Fruhmann Hannes Mikula Gerlinde Wiesenberger Elisabeth Varga Daniel Lumpi Berthold Stöger Georg Häubl Marc Lemmens Franz Berthiller Rudolf Krska Gerhard Adam Christian Hametner Johannes Fröhlich

Pentahydroxyscirpene, a novel trichothecene-type compound, was isolated from Fusarium-inoculated rice. The structure of pentahydroxyscirpene was elucidated by 1D and 2D NMR spectroscopy and X-ray single-crystal diffraction. The conformation in solution was determined by NOESY experiments supported by quantum chemical calculations. In vitro toxicity tests showed that pentahydroxyscirpene inhibit...

Journal: :The Journal of antibiotics 1977
K H Michel P V Demarco R Nagarjan

The isolation, biological properties and structure elucidation of a sixteen-membered macrocyclic lactone antibiotic, designated A26771B (1), obtained from Penicillium turbatum are discussed.

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید