Biological activity and a modified synthesis of 8-amino-3-.beta.-D-ribofuranosyl-1,2,4-triazolo[4,3-.alpha.]pyrazine, an isomer of formycin
作者:Stewart W. Schneller、Robert D. Thompson、Joseph G. Cory、Ray A. Olsson、Erik De Clercq、In Kyung Kim、Peter K. Chiang
DOI:10.1021/jm00373a020
日期:1984.7
A two-step synthesis of 8-amino-3-beta-D-ribofuranosyl-1,2,4-triazolo[4,3-a]pyrazine (3), which is an isomer of formycin that resembles 3-deazaadenosine, is reported. Compound 3 is also described as as being a very poor substrate for adenosine deaminase and to be both a competitive and an irreversible inhibitor of S-adenosylhomocysteinase in the synthesis direction. L1210 cell growth in culture was
分两步合成8-氨基-3-β-D-呋喃呋喃糖基-1,2,4-三唑并[4,3-a]吡嗪(3),它是类似于3-脱氮杂腺苷的甲霉素的异构体,报告。化合物3也被描述为是腺苷脱氨酶的非常差的底物,并且在合成方向上既是S-腺苷同型半胱氨酸酶的竞争性抑制剂又是不可逆抑制剂。L1210细胞在培养物中的生长受到3的抑制。化合物3没有转化为红细胞中的核苷酸水平,但是发现它既抑制了核酸前体的细胞摄取,也抑制了它们掺入L1210细胞的核酸中。最后,发现3种药物是弱抗病毒药和冠脉血管扩张药。