Synthetic studies on flavone derivatives. XIV. Synthesis of 2',4',5'-trioxygenated flavones.
作者:MUNEKAZU IINUMA、KIYOSHI IWASHIMA、SHIN MATSUURA
DOI:10.1248/cpb.32.4935
日期:——
Seven naturally occurring flavones oxygenated at C-2', C-4' and C-5' in ring B were synthesized, together with their isomers, to confirm the proposed structures. The synthesized flavones 1, 2, 3a, 5, 7 and 8 were identical with the corresponding natural flavones, but 4a was not. The spectral properties of these flavones are discussed.
为了证实所提出的结构,我们合成了 B 环中 C-2'、C-4'和 C-5' 含氧的七种天然黄酮及其异构体。合成的黄酮 1、2、3a、5、7 和 8 与相应的天然黄酮相同,但 4a 不相同。本文讨论了这些黄酮的光谱特性。