Rhuschalcones II−VI, Five New Bichalcones from the Root Bark of <i>Rhus </i><i>p</i><i>yroides</i>
作者:Ladislaus K. Mdee、Samuel O. Yeboah、Berhanu M. Abegaz
DOI:10.1021/np020138q
日期:2003.5.1
(rhuschalcone IV, 4), 4,2',4',4' ',2' ",4' "-hexahydroxy-3,5' "-dihydrochalcone-chalcone (rhuschalcone V, 5), and 4,2',4',4' ',2' ",4' "-hexahydroxy-3,5' "-bichalcone (rhuschalcone VI, 6), repectively. Also obtained was the known compound rhuschalcone I (1). Their structures were determined by spectroscopic and chemical methods, and for 1-3 by total synthesis. All the bichalcones (1-6) tested exhibited selective
早在对Rhus pyroides的细枝进行调查时,就已经在该物种的根皮中发现了痕量的双黄酮。这些新的类黄酮属于稀有的Bichalcone类,并已被鉴定为2',4',4'',2'“,4'”-五羟基-4-O-5'“-比卡康尼(rhuschalcone II,2), 2',4',4'',2'“-四羟基-4'”-甲氧基-4-O-5'“ -bichalcone(rhuschalcone III,3),4,2',4'',2'” -四羟基-4'-甲氧基-4'-O-5'-二氟代(rhuschalcone IV,4),4,2',4',4'',2'“,4'”-六羟基-3, 5'“-二氢查耳酮-查耳酮(rhuschalcone V,5)和4,2',4',4'',2'”,4'“-六羟基-3,5'” -bichalcone(rhuschalcone VI,6) ,分别。还获得了已知的化合物曲沙考酮I(1)。通过光谱