An efficient and versatile strategy for the synthesis of polyhydroxycyclohexanes and related compounds 3-6 is reported. The successful synthesis of these analogues has been achieved from a common intermediate, quinic acid derived lactone 2, rapidly accessible from cheap and commercially available (-)-quinic acid (1) as a chiral template. A practical route involving stereocontrolled epoxide formation
Antibacterial effect of 3-<i>p-trans</i>-coumaroyl-2-hydroxyquinic acid, a phenolic compound from needles of<i>Cedrus deodara</i>, on cellular functions of<i>Staphylococcus aureus</i>
A natural phenolic compound, 3-p-trans-coumaroyl-2-hydroxyquinic acid (CHQA) from needles of Cedrusdeodara, has been reported to exhibit strong antibacterial activity. In this study, the molecular structural requirements of CHQA for the antibacterial activity and its effect on the cellular functions of Staphylococcus aureus were investigated. The structure–activity relationship analysis revealed that
据报道,来自雪松针叶的天然酚类化合物 3-对反-香豆酰-2-羟基奎尼酸 (CHQA)具有很强的抗菌活性。在本研究中,研究了 CHQA 对抗菌活性的分子结构要求及其对金黄色葡萄球菌细胞功能的影响。构效关系分析表明,CHQA 的对香豆酸部分对抗菌活性至关重要,而对-香豆酸和2-羟基奎尼酸是不利的。对细胞代谢的研究表明,CHQA 诱导细胞内 ATP 浓度显着降低,但细胞外 ATP 没有成比例增加。还发现CHQA略微增加了金黄色葡萄球菌的呼吸活性和琥珀酸脱氢酶活性。同时,CHQA降低了金黄色葡萄球菌的DNA合成,并通过凹槽结合模式直接与DNA相互作用。