A method for the condensation of boroxazolidones derived from L-valine with aromatic aldehydes, catalysed by 1,5,7-triazabicyclo[4.4.0]dec-5-ene was developed. The preparation and isolation of a series of highly functionalised stable ketimines derived from the reaction of 2,2-diaryl-1,3,2-oxazaborolidin-5-ones with aryl aldehydes is herein described. Several unreported boroxazolidones were prepared
开发了一种由1,5,7-三
氮杂双环[4.4.0] dec-5-ene催化的
L-缬氨酸衍生的
硼唑烷酮与
芳香族醛的缩合方法。本文描述了由2,2-二芳基-1,3,2-氧杂
硼硼烷-5-酮与芳基醛反应衍生的一系列高度官能化的稳定酮
亚胺的制备和分离。通过四芳基
硼酸三乙
铵与
L-缬氨酸的缩合反应制备了几种未报道的
硼恶唑烷酮,收率高达98%。确定新合成的化合物对结肠直肠腺癌细胞具有中等细胞毒性,该系列中最好的化合物的IC 50为为76μM。简短检查相同化合物对人脑星形细胞瘤细胞的作用,发现IC 50为268μM。