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■ (-)-Padocin: A Novel Epoxylignan from Haplophyllum Cappadocicum

Belkis Gözler, Bijen Kivçak, Gökay Arar, Tekant Gözler, and Manfred Hesse*

*Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland

Abstract

Haplophyllum cappadocicum (Rutaceae) of Turkish origin yielded a novel lignan, incorporating an unusual 6,9’ fusion in a 9,9’-epoxylignan structure. Extensive 2D nmr experiments and catalytic hydrogenolysis are undertaken for the elucidation of structure with the relative configuration given in 1.