A series of lipoamino acids were synthesized and their neuroprotective effect against brain ischemia induced by oxygen-glucose deprivation (OGD) on rat cerebral slices was evaluated. Among these compounds, N-stearoyl-L-tyrosine (4), N-stearoyl-L-serine (5) and N-stearoyl-L-threonine (6) exhibited good neuroprotective activity. We found that the neuroprotective activity of lipoamino acids depended on the acyl group, the presence of a free carboxylic function and a free hydroxyl group at the branched chain of the amino acids. The results also showed that 5 was the most active compound, protecting rat brain slices against OGD as well as hydrogen peroxide (H2O2) insult at the range of 1–10 M.
一系列脂
氨基酸被合成,并评估了它们对大鼠脑片由氧
葡萄糖剥夺(OGD)诱导的脑缺血的神经保护作用。在这些化合物中,N-硬脂酰基-
L-酪氨酸(4)、N-硬脂酰基-
L-丝氨酸(5)和N-硬脂酰基-
L-苏氨酸(6)表现出了良好的神经保护活性。我们发现,脂
氨基酸的神经保护活性依赖于酰基团、
氨基酸支链上自由羧基和自由羟基的存在。结果还显示,5是最活跃的化合物,在1-10 M的范围内保护大鼠脑片免受OGD和
过氧化氢(
H2O2)的损伤。