One‐Pot Synthesis of α‐Formyloxy Ketones from Enolizable Ketones
摘要:
One-pot synthesis of alpha-formyloxy tones as well as alpha-acetoxy ketones from enolizable ketones and [hydroxy(tosyloxy)iodo] benzene (HTIB)/polymer supported [hydroxy(tosyloxy)iodo]benzene (PSHTIB) in N,N - dimethylformamide (DMF)/N,N - dimethylacetamide (DMA) in high yields is described.
Fast-Synthesis of α-Phosphonyloxy Ketones as Drug Scaffolds in a Capillary Microreactor
作者:Bandaru T. Ramanjaneyulu、Shinde Vidyacharan、Se Jun Yim、Dong-Pyo Kim
DOI:10.1002/ejoc.201901655
日期:2019.12.19
A fast single‐step synthesis of α‐phosphonyloxy ketones in continuous flow at r.t. has been developed. A wide range of highly reactive 1,2‐dicarbonyls readily reacts with trialkyl phosphites and formic acids to give the corresponding α‐phosphonyloxy ketones in moderate to good yields (50–82%) in continuous‐flow with the flow rate of 3 ml/min (tR = ∼4 s). The reaction products can be utilized to form
已开发出在室温连续流动的快速单步合成α-膦酰氧基酮的方法。各种各样的高反应性1,2-二羰基化合物易于与亚磷酸三烷基酯和甲酸反应,以3 ml / ml的流速连续流动,以中等至良好的收率(50-82%)得到相应的α-膦酰氧基酮。 min(t R =〜4 s)。反应产物可用于形成天然产物和活性药物成分的替代关键前体/支架。
Activity of 6-aryl-pyrrolo[2,3-d]pyrimidine-4-amines to Tetrahymena
作者:Svein Jacob Kaspersen、Eirik Sundby、Colin Charnock、Bård Helge Hoff
DOI:10.1016/j.bioorg.2012.06.003
日期:2012.10
and the para-bromo substituted derivatives had the lowest minimum protozoacidal concentrations (8–16 μg/mL). Surprisingly, both enantiomers were found to have high potency suggesting that this compound class could have several modes of action. No correlation was found between the compounds protozoacidal activity and the in vitro epidermal growth factor receptor tyrosine kinase inhibitory potency. This
测试了一系列的6-芳基-吡咯并[2,3- d ]嘧啶-4-胺(43种化合物),其中一些是表皮生长因子酪氨酸激酶抑制剂,使用环境四膜虫菌株作为模型生物对它们的原生动物毒性进行了测试。发现类似物的原酸活性高度依赖于6-芳基环上的4-羟基和4位上的手性1-苯基乙胺取代基。此外,效力受到苯基乙胺的芳族取代模式的影响。 :未取代的,间-氟和对位-溴取代的衍生物的最低原生动物酸浓度最低(8–16μg/ mL)。令人惊讶地,发现两种对映异构体均具有高效力,这表明该化合物类别可具有多种作用方式。化合物的原酸活性与体外表皮生长因子受体酪氨酸激酶抑制能力之间没有相关性。这表明观察到的抗菌作用与其他目标有关。对一组激酶的测试表明了几种替代的作用方式。