报道了在四氯化碳和乙腈中作为溶剂的几种官能取代的有机锡化合物的溴代锡烷基化反应。四氯化碳中的反应在亲电取代所涉及的碳处高度保留构型,而在极性溶剂中,形成的转化产物数量增加。β-三烷基锡烷基酯中的亲电子裂解反应是完全颠倒了卤素对SnC键的正常裂解顺序;这可以通过锡协助来解释。指定了一些3-三烷基锡烷基丙烷腈,β-溴腈和β-溴酸酯的构型。给出了全部1 H,13 C和119 Sn NMR数据。
报道了在四氯化碳和乙腈中作为溶剂的几种官能取代的有机锡化合物的溴代锡烷基化反应。四氯化碳中的反应在亲电取代所涉及的碳处高度保留构型,而在极性溶剂中,形成的转化产物数量增加。β-三烷基锡烷基酯中的亲电子裂解反应是完全颠倒了卤素对SnC键的正常裂解顺序;这可以通过锡协助来解释。指定了一些3-三烷基锡烷基丙烷腈,β-溴腈和β-溴酸酯的构型。给出了全部1 H,13 C和119 Sn NMR数据。
[EN] PYRAZOLE DERIVATIVES AS PROTEIN KINASE MODULATORS<br/>[FR] DERIVES DE PYRAZOLE SERVANT DE MODULATEURS DE PROTEINE KINASE
申请人:ASTEX TECHNOLOGY LTD
公开号:WO2005061463A1
公开(公告)日:2005-07-07
The invention provides compounds of the formula: (I) having protein kinase B inhibiting activity: wherein A is a saturated hydrocarbon linker group containing from 1 to 7 carbon atoms, the linker group having a maximum chain length of 5 atoms extending between Rl and NR2R3 and a maximum chain length of 4 atoms extending between E and NR2R3, wherein one of the carbon atoms in the linker group may optionally be replaced by an oxygen or nitrogen atom; and wherein the carbon atoms of the inker group A may optionally bear one or more substituents selected from oxo, fluorine and hydroxy, provided that the hydroxy group when present is not located at a carbon atom a with respect to the NR2R3 group and provided that the oxo group when present is located at a carbon atom a with respect to the NR2R3 group; E is a monocyclic or bicyclic carbocyclic or heterocyclic group; Rl is an aryl or heteroaryl group; and R2, R3, R4 and R5 are as defined in the claims. Also provided are pharmaceutical compositions containing the compounds, methods for preparing the compounds and their use as anticancer agents.
Bromodestannylation reactions are reported for several functional substituted organotin compounds in carbon tetrachloride and acetonitrile as solvents. The reactions in carbon tetrachloride proceed with a high degree of retention of configuration at the carbon involved in the electrophilic substitution, while in a polar solvent there is an increase in the amount of inversion product formed. The electrophilic
报道了在四氯化碳和乙腈中作为溶剂的几种官能取代的有机锡化合物的溴代锡烷基化反应。四氯化碳中的反应在亲电取代所涉及的碳处高度保留构型,而在极性溶剂中,形成的转化产物数量增加。β-三烷基锡烷基酯中的亲电子裂解反应是完全颠倒了卤素对SnC键的正常裂解顺序;这可以通过锡协助来解释。指定了一些3-三烷基锡烷基丙烷腈,β-溴腈和β-溴酸酯的构型。给出了全部1 H,13 C和119 Sn NMR数据。