For the first time, several pentacyclic E-ring-free lamellarin analogues were prepared using a new facile and straightforward synthetic method based on [3+2] cycloaddition. Their cytotoxicity was assessed in a panel of cancer cell lines in comparison with several hexacyclic lamellarins. E-ring-free lamellarins were devoid of cytotoxicity due to their poor solubility in cellular environment.
首次使用基于 [3+2] 环加成的简便易行的新合成方法制备了几种无五环 E 环的片状多
糖类似物。他们的细胞毒性在一组癌
细胞系中进行了评估,并与几种六环层状蛋白进行了比较。无 E 环层状蛋白由于其在细胞环境中的溶解度差而没有细胞毒性。