The title compound N,N,N’,N’-tetra[(diphenylphosphine)methyl]-1,4-phenylenediamine is synthesized by reaction of [Ph2P(CH2OH)2]Cl and 1,4-phenylenediamine.It is characterized by elemental analysis,IR,31PNMR,1HNMR.Si...The title compound N,N,N’,N’-tetra[(diphenylphosphine)methyl]-1,4-phenylenediamine is synthesized by reaction of [Ph2P(CH2OH)2]Cl and 1,4-phenylenediamine.It is characterized by elemental analysis,IR,31PNMR,1HNMR.Single crystal X-ray diffraction analysis reveals that it is centro-symmetric with the inversion center at the centroid of phenylene.Intermolecular π–π stacking interactions between phenyl rings make molecules arrange along the b axis into one-dimensional chains,while these chains are further extended by intermolecular C-H…π interactions into three-dimensional supramolecular structure.The crystal is orthorhombic system with space group Pbca,Mr: 900.90,a=12.215(1),b=14.460(2),c=27.821(3),β=90°,v=4914.0(9)3,z=4,Dc=1.218 mg·m-3,F(000)=1896,R=0.0487,wR=0.1245.展开更多
脑小血管病(cerebral small vessel disease,CSVD)指脑内小血管及微小血管出现病变所导致的临床、影像和病理综合征^([1])。CSVD是一种年龄相关的高患病率疾病,是认知障碍最常见的原因之一,但起病隐匿,缺乏有效早期诊断标志物。已经发现...脑小血管病(cerebral small vessel disease,CSVD)指脑内小血管及微小血管出现病变所导致的临床、影像和病理综合征^([1])。CSVD是一种年龄相关的高患病率疾病,是认知障碍最常见的原因之一,但起病隐匿,缺乏有效早期诊断标志物。已经发现的CSVD发病机制有年龄、高血压所致慢性脑缺血与低灌注、内皮细胞功能障碍、血脑屏障破坏和炎性反应,不同机制之间相互影响^([2-3])。真核生物中普遍的RNA修饰方式是N6-甲基腺苷(N6-methyladenosine,m^(6)A)甲基化修饰,m^(6)A相关蛋白在大脑中广泛表达和高度富集,不仅影响神经发生、轴突生长、突触可塑性等生理过程,还与神经变性病的发展有关,如帕金森病、阿尔茨海默病^([4])。展开更多
文摘The title compound N,N,N’,N’-tetra[(diphenylphosphine)methyl]-1,4-phenylenediamine is synthesized by reaction of [Ph2P(CH2OH)2]Cl and 1,4-phenylenediamine.It is characterized by elemental analysis,IR,31PNMR,1HNMR.Single crystal X-ray diffraction analysis reveals that it is centro-symmetric with the inversion center at the centroid of phenylene.Intermolecular π–π stacking interactions between phenyl rings make molecules arrange along the b axis into one-dimensional chains,while these chains are further extended by intermolecular C-H…π interactions into three-dimensional supramolecular structure.The crystal is orthorhombic system with space group Pbca,Mr: 900.90,a=12.215(1),b=14.460(2),c=27.821(3),β=90°,v=4914.0(9)3,z=4,Dc=1.218 mg·m-3,F(000)=1896,R=0.0487,wR=0.1245.
文摘脑小血管病(cerebral small vessel disease,CSVD)指脑内小血管及微小血管出现病变所导致的临床、影像和病理综合征^([1])。CSVD是一种年龄相关的高患病率疾病,是认知障碍最常见的原因之一,但起病隐匿,缺乏有效早期诊断标志物。已经发现的CSVD发病机制有年龄、高血压所致慢性脑缺血与低灌注、内皮细胞功能障碍、血脑屏障破坏和炎性反应,不同机制之间相互影响^([2-3])。真核生物中普遍的RNA修饰方式是N6-甲基腺苷(N6-methyladenosine,m^(6)A)甲基化修饰,m^(6)A相关蛋白在大脑中广泛表达和高度富集,不仅影响神经发生、轴突生长、突触可塑性等生理过程,还与神经变性病的发展有关,如帕金森病、阿尔茨海默病^([4])。
