Assessment and use of two silicon carbide multi-well plates for library synthesis and proteolytic digests using microwave heating
作者:Lauren M. Stencel、Chad M. Kormos、Keri B. Avery、Nicholas E. Leadbeater
DOI:10.1039/b902112d
日期:——
The use of two silicon carbide plates is reported for the preparation of three libraries of organic molecules using microwave heating. In addition, a preliminary study has been carried out, showing that one of the plates can also be used in a proteomics setting. Both the 24-position and 48-position plates heated evenly when irradiated with microwave energy. The 48-position plate was used to prepare a library of N-aryl functionalized β-amino esters via an aza-Michael reaction between anilines and Michael acceptors. The 24-position plate was used to prepare a library of biaryls via a Suzuki coupling methodology and a library of 1,4-dihydropyridines via a Hantzsch synthesis. The 48-position plate was also used to perform the proteolytic digestion of insulin chain B by trypsin.
One-Pot Synthesis and Aromatization of 1,4-Dihydropyridines in Refluxing Water
作者:Guan-Wu Wang、Jing-Jing Xia
DOI:10.1055/s-2005-870022
日期:——
A series of 1,4-dihydropyridines were synthesized in an environmentally benign method, by reacting aldehydes with acetoacetate esters or acetylacetone and ammonium acetate in refluxing water. The thus formed 1,4-dihydropyridines was subsequently oxidized in one-pot to the corresponding pyridine derivatives by either ferric chloride or potassium permanganate.
A facile and efficient synthesis of new 1,4‐dihydropyridine derivatives was reported via Hantzsch three‐component condensation reaction of aldehydes or formylphenylboronic acids, ethyl acetoacetate, and ammonium acetate in the presence of a catalytic amount of triethylamine under solvent‐free conditions. The method described here offers several advantages including high yields, short reaction times
Revisiting ageless antiques; synthesis, biological evaluation, docking simulation and mechanistic insights of 1,4-Dihydropyridines as anticancer agents
作者:Peter A. Sidhom、Eman El-Bastawissy、Abeer A. Salama、Tarek F. El-Moselhy
DOI:10.1016/j.bioorg.2021.105054
日期:2021.9
antitumor activity against lungcancerA549 (GI%= 83.02%), more powerful than both cisplatin and doxorubicin. Compound 11b exhibited an exceptional anticancer activity against lungcancercell line (A549) as its GI50 in nanomolar was (540 nM) with a 9-fold increase greater than cisplatin (GI50 = 4.93 µM) and with a selectivity index = 131 to cancercells over normal cells. Further mechanistic investigations
Design, synthesis and evaluation of dialkyl 4-(benzo[d][1,3]dioxol-6-yl)-1,4-dihydro-2,6-dimethyl-1-substituted pyridine-3,5-dicarboxylates as potential anticonvulsants and their molecular properties prediction
作者:G. Prasanthi、K.V.S.R.G. Prasad、K. Bharathi
DOI:10.1016/j.ejmech.2013.06.006
日期:2013.8
dialkyl 4-(benzo[d][1,3]dioxol-6-yl)-1,4-dihydro-2,6-dimethyl-1-substituted pyridine-3,5-dicarboxylate derivatives as isosteric analogues of isradipine and nifedipine, by the replacement of benzofurazanyl and 2-nitrophenyl groups respectively with benzo[d][1,3]dioxo-6-yl group, as potentialanticonvulsants. Fivfteen new derivatives (8a–8o) were synthesized and tested for anticonvulsantactivity using maximal
本研究是关于4-(苯并[ d ] [1,3]二氧杂-6-基)-1,4-二氢-2,6-二甲基-1-取代的吡啶-3,5-二羧酸二烷基酯的开发衍生物作为伊拉地平和硝苯地平的等排类似物,通过分别用苯并[ d ] [1,3]二氧代-6-基团取代苯并呋喃氮基和2-硝基苯基,作为潜在的抗惊厥药。合成了15种新的衍生物(8a – 8o),并使用最大的电击和皮下戊四氮诱发的癫痫发作方法测试了其抗惊厥活性。化合物8f在1,4-二氢吡啶环上具有游离NH基,在3和5位的二乙酯官能团显示出显着的抗惊厥和抗氧化活性。分子特性预测数据也支持这一点。在辣椒素诱导的伤害感受测定中以10 mg / kg体重评估了所选化合物的抗伤害感受活性,但在测试剂量下未显示出明显的活性。