A rapid nucleophilic displacement reaction of 6-chloropurine, 2-amino-6-chloropurine and 5-bromocytosine with various nucleophiles under focusedmicrowaveirradiation is described. Using this method, the desired products were obtained with the yields up to 99% in a short reaction time.
Convenient and Efficient Syntheses of<i>N</i><sup>6</sup>- and<i>N</i><sup>4</sup>- Substituted Adenines and Cytosines and their 2′-Deoxyribosides
作者:Ewelina Adamska、Jan Barciszewski、Wojciech T. Markiewicz
DOI:10.1080/15257770.2012.742198
日期:2012.12
Convenient and efficient methods of the synthesis of N6- and N4-substituted derivatives of adenine and cytosine and their 2′-deoxyribosides were developed. The reactions of either unprotected nucleobases (adenine, cytosine) or unprotected 2′-deoxyribosides with aryl or alkyl aldehydes give corresponding Schiff bases that can be reduced to the target title compounds with high overall yields. In the
Compounds of formula (I) wherein A represents a nucleobase or a derivative thereof, n is equal to 0 or 1 and R', R" are carbonic chain, and R10 is hydrogen or a carbonic chain for their use as antiviral agents.
式(I)中A代表核碱基或其衍生物,n等于0或1,R'、R"为碳链,R10为氢或碳链,用作抗病毒剂。
[EN] QUINDOLINE COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS DE QUINDOLINE ET LEURS UTILISATIONS
申请人:UNIV ARIZONA
公开号:WO2020160175A1
公开(公告)日:2020-08-06
This invention is in the field of medicinal chemistry. In particular, the invention relates to a new class of small-molecules having a quindoline (or similar) structure which function as stabilizers of G-quadruplex (G4) formation, and their use as therapeutics for the treatment of cancer (e.g., castration-resistant prostate cancer), and other conditions mediated by G4 stabilization.
The Scope and Mechanism of Phosphonium-Mediated S<sub>N</sub>Ar Reactions in Heterocyclic Amides and Ureas
作者:Zhao-Kui Wan、Sumrit Wacharasindhu、Christopher G. Levins、Melissa Lin、Keiko Tabei、Tarek S. Mansour
DOI:10.1021/jo7020373
日期:2007.12.1
An efficient “one-step” synthesis of cyclic amidines and guanidines has been developed. Treatment of cyclic amides and ureas with benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (BOP), base, and nitrogen nucleophiles leads to the formation of the corresponding cyclic amidines and guanidines, typically in good to excellent yields. This method has also been used to prepare heteroaryl