Studies in the thymelaeaceae, V. 2'-Hydroxyflavone from Daphnopsis sellowiana: isolation and synthesis

From the leaves of Daphnopsis sellowiana (Thymelaeceae), 2'-hydroxyflavone [1], a rare natural product, has been isolated and characterized through its spectroscopic properties. Confirmation of the structure was achieved through total synthesis, which also afforded adequate material for complete 13C-nmr analysis.