Planta Medica, Table of Contents Planta Med 1981; 43(9): 46-50DOI: 10.1055/s-2007-971471 Research Articles © Hippokrates Verlag Stuttgart Confirmation of Structures of Semecarpus Biflavanones A1 and A2 S. S. N. Murthy, N. S. Prakasa Rao, A. S. R. Anjaneyulu, L. Ramachandra Row Department of Chemistry, Andhra University, Waltair, India Recommend Article Abstract PDF Download Buy Article Abstract The biflavanone mixture from semecarpus anacardium L. was reisolated and dehydrogenated with I2/KOAc in AcOH to yield the corresponding, relatively more stable, biflavone mixture which was methylated using diazomethane. Two biflavone methyl ethers SA1 and SA2 were obtained which confirmed the structures proposed for the parent biflavanones A1 and A2 respectively. Key Word Index Semecarpus anacardium - Anacardiaceae - Semecarpus biflavanones A1 and A2 - 1HNMR and Mass spectra - Biflavones SA1 and SA2 PDF (71 kb)
