Albach Dirk C, Grayer Renée J, Jensen Søren Rosendal, Ozgökce Fevzi, Veitch Nigel C
Department of Higher Plant Systematics, Institute of Botany, University of Vienna, Austria.
Phytochemistry. 2003 Dec;64(7):1295-301. doi: 10.1016/j.phytochem.2003.08.012.
A survey of the flavonoid glycosides of selected taxa in the genus Veronica yielded two new acylated 5,6,7,3',4'-pentahydroxyflavone (6-hydroxyluteolin) glycosides and two unusual allose-containing acylated 5,7,8,4'-tetrahydroxyflavone (isoscutellarein) glycosides. The new compounds were isolated from V. liwanensis and V. longifolia and identified using NMR spectroscopy as 6-hydroxyluteolin 4'-methyl ether 7-O-alpha-rhamnopyranosyl(1"'-->2")[6"-O-acetyl-beta-glucopyranoside] and 6-hydroxyluteolin 7-O-(6"-O-(E)-caffeoyl)-beta-glucopyranoside, respectively. Isoscutellarein 7-O-(6"'-O-acetyl)-beta-allopyranosyl(1"'-->2")-beta-glucopyranoside was obtained from both V. intercedens and V. orientalis and its 4'-methyl ether from V. orientalis only. Complete 1H and 13C NMR spectral assignments are presented for both isoscutellarein glycosides. Two iridoid glucosides new to the genus Veronica (melittoside and globularifolin) were also isolated from V. intercedens.
对婆婆纳属选定分类群的黄酮苷进行的一项调查产生了两种新的酰化5,6,7,3',4'-五羟基黄酮（6-羟基木犀草素）苷和两种不寻常的含阿洛糖的酰化5,7,8,4'-四羟基黄酮（异野黄芩素）苷。这些新化合物从立碗婆婆纳和长叶婆婆纳中分离得到，并通过核磁共振光谱鉴定为6-羟基木犀草素4'-甲基醚7-O-α-鼠李糖吡喃糖基(1"'→2")[6"-O-乙酰基-β-葡萄糖吡喃糖苷]和6-羟基木犀草素7-O-(6"-O-(E)-咖啡酰基)-β-葡萄糖吡喃糖苷。异野黄芩素7-O-(6"'-O-乙酰基)-β-阿洛糖吡喃糖基(1"'→2")-β-葡萄糖吡喃糖苷从居间婆婆纳和东方婆婆纳中均获得，而其4'-甲基醚仅从东方婆婆纳中获得。给出了两种异野黄芩素苷的完整1H和13C NMR光谱归属。还从居间婆婆纳中分离出了两种婆婆纳属新的环烯醚萜苷（蜜里苷和球花苷）。
