Diarylheptanoids from Myrica gale var. tomentosa and Revised Structure of Porson

Abstract

From the stems of Myrica gale var. tomentosa (Myricaceae), two new diarylhyptanoids (3 and 4) were isolated together with myricanone, porson, gallic acid and myricetin 3-O-(6"-galloyl)-β-D-galactopyranoside. On the basis of spectroscopic and chemical evidence, the structures of 3 and 4 have been determined as 12-dehydroporson and 12-hydroxymyricanone, respectively. The structure of porson was reinvestigated, and a revised structure, 12-hydroxy-5-O-methylmyricanone, was proposed.