Papuabalanols A and B, New Tannins from Balanophora papuana
作者:Takahiro Hosoya、Asami Nakata、Kazumasa Zaima、Jalifah Latip、Laily Bin Din、Noramly Muslim、Hiroshi Morita
DOI:10.1248/cpb.58.738
日期:——
Two new dehydrohexahydroxydiphenoyl (DHHDP) esters of dihydrochalcone glycosides, papuabalanols A (1) and B (2) were isolated from the ethyl acetate extract of Balanophora papuana. Their structures were elucidated on the basis of spectroscopic data and chemical evidences. Papuabalanol A (1) showed moderate vasodilator effect on rat aorta and papuabalanol B (2) showed potent inhibition of mushroom tyrosinase