使用基于蒽二脒二膦酸和单-膦酸衍生物的荧光检测1进行了研究。的二脒1种形式1:1和1:2个络合物分别与二膦酸和单-膦酸衍生物,并呈现出蓝色荧光(λ EM 中的DMSO溶液= 432-442纳米)。脒鎓膦酸酯(复合物形成)和离解amidinum的形成(λ EM = 468纳米作为宽带)通过在荧光波长的差异区分,并且通过DOSY NMR光谱和TD-DFT计算证实。与二am 1形成1:2络合物 提出了在甲基膦酸之间具有另外的分子间氢键的甲基膦酸。
[EN] FLAVIN DERIVATIVES<br/>[FR] DÉRIVÉS DE LA FLAVINE
申请人:BIORELIX PHARMACEUTICALS INC
公开号:WO2010019208A1
公开(公告)日:2010-02-18
The present invention relates novel flavin derivatives and other flavin derivatives, their use and compositions for use as riboswitch ligands and/or anti-infectives. The invention also provides method of making novel flavin derivatives.
Diethylphosphonates and tetraethyl alkyldiphosphonates were efficiently and rapidly prepared via the Michaelis–Becker reaction, under microwave irradiation. These compounds were then hydrolyzed to phosphonic and diphosphonic acids or selectively monodealkylated to give monoesters of phosphonic acids and symmetrical diethyl esters of diphosphonic acids. These reactions were also achieved rapidly in
Diphosphonictetrachlorides of general type Cl2PO(CH2)xPOCl2 were prepared and characterised, completing the series with x= 1–10. Periodicity of melting points of these substances was noted for the first time, this phenomenon being similar to that observed in several series of organic compounds devoid of phosphorus.