胆固醇是人体重要的脂质,胆固醇水平过高可引发高胆固醇血症等疾病,3-羟基-3-甲基戊二酰辅酶A还原酶(3-hydroxy-3-methylglutaryl coenzyme A reductase,HMGCR)是催化胆固醇生物合成中的限速酶,因此HMGCR是调节胆固醇稳态的关键因素,HM...胆固醇是人体重要的脂质,胆固醇水平过高可引发高胆固醇血症等疾病,3-羟基-3-甲基戊二酰辅酶A还原酶(3-hydroxy-3-methylglutaryl coenzyme A reductase,HMGCR)是催化胆固醇生物合成中的限速酶,因此HMGCR是调节胆固醇稳态的关键因素,HMGCR在体内的调控机制十分复杂。本文从HMGCR的转录表达、降解、活性方面总结了该酶调控机制的研究进展及与相关疾病的关系。展开更多
Pyridin-a-ylmethyl 3,5-bis(pyridin-a-ylmethoxy)benzoate(a=2,L1;a=3,L2;a=4,L3)were synthesized by reaction of 3,5-dihydroxybenzoic acid and a-chloromethyl pyridine(a=2,3,4).Their structures were characterized by IR,1H ...Pyridin-a-ylmethyl 3,5-bis(pyridin-a-ylmethoxy)benzoate(a=2,L1;a=3,L2;a=4,L3)were synthesized by reaction of 3,5-dihydroxybenzoic acid and a-chloromethyl pyridine(a=2,3,4).Their structures were characterized by IR,1H NMR,13C NMR,ESI-MS and elemental analysis.The effects of reaction temperature and reaction time on esterification and etherification were also studied,respectively.展开更多
N-(4-hydroxy-3-methoxyphenylmethylene)-p-methoxyaniline(C15H15NO3) was synthesized by the one step solid phase reactions of p-methoxyaniline with vanillin at room temperature without solvent.The reaction was completed...N-(4-hydroxy-3-methoxyphenylmethylene)-p-methoxyaniline(C15H15NO3) was synthesized by the one step solid phase reactions of p-methoxyaniline with vanillin at room temperature without solvent.The reaction was completed in 15 min and the yield was 93%.The product was characterized by elemental analysis,X-ray powder diffraction,IR and 1H NMR.展开更多
文摘胆固醇是人体重要的脂质,胆固醇水平过高可引发高胆固醇血症等疾病,3-羟基-3-甲基戊二酰辅酶A还原酶(3-hydroxy-3-methylglutaryl coenzyme A reductase,HMGCR)是催化胆固醇生物合成中的限速酶,因此HMGCR是调节胆固醇稳态的关键因素,HMGCR在体内的调控机制十分复杂。本文从HMGCR的转录表达、降解、活性方面总结了该酶调控机制的研究进展及与相关疾病的关系。
文摘Pyridin-a-ylmethyl 3,5-bis(pyridin-a-ylmethoxy)benzoate(a=2,L1;a=3,L2;a=4,L3)were synthesized by reaction of 3,5-dihydroxybenzoic acid and a-chloromethyl pyridine(a=2,3,4).Their structures were characterized by IR,1H NMR,13C NMR,ESI-MS and elemental analysis.The effects of reaction temperature and reaction time on esterification and etherification were also studied,respectively.
文摘N-(4-hydroxy-3-methoxyphenylmethylene)-p-methoxyaniline(C15H15NO3) was synthesized by the one step solid phase reactions of p-methoxyaniline with vanillin at room temperature without solvent.The reaction was completed in 15 min and the yield was 93%.The product was characterized by elemental analysis,X-ray powder diffraction,IR and 1H NMR.
