Lu Y, Sun Y, Foo L Y, McNabb W C, Molan A L
Industrial Research, Gracefield Research Centre, Lower Hutt, New Zealand.
Phytochemistry. 2000 Sep;55(1):67-75. doi: 10.1016/s0031-9422(00)00143-6.
A chemical examination of the extractives of the leaves of sainfoin was undertaken as part of a programme directed at understanding the factors which may contribute to its nutritive value as animal feed. Among the low molecular weight phenolic compounds characterized were seven cinnamic acid derivatives and nine flavonoid glycosides all of which were identified by NMR spectroscopy. Included among these compounds were two new natural hydroxycinnamic esters namely methyl 6-O-p-trans-coumaroyl-beta-D-glucopyranoside and methyl 6-O-p-cis-coumaroyl-beta-D-glucopyranoside and a novel flavonoid chrysoeriol-4'-O-(6''-O-acetyl)-beta-D-glucopyranoside.
作为旨在了解可能影响红豆草作为动物饲料营养价值的因素的项目的一部分，对红豆草叶片提取物进行了化学分析。在所鉴定的低分子量酚类化合物中，有七种肉桂酸衍生物和九种黄酮苷，所有这些化合物均通过核磁共振光谱法鉴定。这些化合物包括两种新的天然羟基肉桂酸酯，即6-O-对-反式香豆酰基-β-D-吡喃葡萄糖苷甲酯和6-O-对-顺式香豆酰基-β-D-吡喃葡萄糖苷甲酯，以及一种新型黄酮类化合物白杨黄素-4'-O-(6''-O-乙酰基)-β-D-吡喃葡萄糖苷。
