In the course of development of factor Xa (FXa) inhibitors, we have found unique compounds containing an N,O- and an N,N-spiro acetal structure. It appeared that the difference in overall conformation due to the N,X-spiro acetal structure might be important for FXa inhibitory activity. Therefore, other N,X-spiro acetal structures, an N,S- and an N,SO2-spiro acetal, were developed as analogues of the N,X-spiro acetal structure. Compound 7b (N,S-spiro acetal structure) was found to have the strongest activity in these series of N,X-spiro acetal compounds, which had ever been synthesized.4,5)
在开发 Xa(FXa)因子
抑制剂的过程中,我们发现了含有 N,O-和 N,N-螺
缩醛结构的独特化合物。看来,N,X-螺
缩醛结构导致的整体构象差异可能对 FXa 抑制活性很重要。因此,我们开发了其他 N,X-螺
缩醛结构,即 N,S-和 N,SO2-螺
缩醛,作为 N,X-螺
缩醛结构的类似物。研究发现,化合物 7b(N,S-螺
缩醛结构)是迄今合成的 N,X-螺
缩醛化合物系列中活性最强的。)