First Synthesis and Anticancer Activity of Phosmidosine and Its Related Compounds
作者:Tomohisa Moriguchi、Norio Asai、Kazuhisa Okada、Kohji Seio、Takuma Sasaki、Mitsuo Sekine
DOI:10.1021/jo016176g
日期:2002.5.1
the presence of 5-(3,5-dinitrophenyl)-1H-tetrazole. The successful synthesis of phosmidosine was achieved by use of a tert-butoxycarbonyl (Boc) group, which was found to be selectively introduced into the 7-NH function of 8-oxoadenosine and to serve as a pseudo-protecting group due to its steric effect in such manner that the unmasked 6-amino group was not phosphitylated. Final coupling reaction of the
本文描述了膦酰胺和膦嘧啶B的首次合成,即由8-氧代腺苷和L-脯氨酸组成的核苷酸抗生素,它们通过独特的N-酰基氨基磷酸酯键连接。膦酰胺在N-酰基氨基磷酸酯键的磷原子上具有尚未确定的手性中心。磷肌苷B是一种脱磷的磷肌苷衍生物,在磷上没有手性。在5-(3,5-二硝基苯基)-1H-四唑存在下,N-乙酰基-8-氧代腺苷5'-O-亚磷酰胺衍生物与N-保护的脯氨酰胺反应成功地合成了肌苷B。通过使用叔丁氧羰基(Boc)基团可以成功合成膦嘧啶 发现它被选择性地引入到8-氧代腺苷的7-NH官能团中,并由于其空间效应而以未保护的6-氨基未被磷酸化的方式用作假保护基团。8-氧代腺苷5'-亚磷酰胺衍生物与N-三苯甲基脯氨酰胺的最终偶联反应,然后完全脱保护,得到膦酰胺及其非对映异构体的混合物。非对映异构体的(13)C NMR光谱表明,缓慢洗脱的非对映异构体1b是天然存在的膦酰胺。通过MTT分析评价了膦肌苷1b,其非对