derivatives of hydroxyurea 5a-o were prepared by aminolysis of N-(1-benzotriazolecarbonyl)amino acid amides 4a-o with hydroxylamine. The hydantoin derivatives 6a-e,m,p were synthesized by base-catalyzed cyclization of amides 4, common precursors for 5 and 6. X-ray crystal structure analysis shows that the C5 atom in 6e possesses the S configuration, which is consistent with the configuration of the starting
羟基
脲5a-o的新型L-和D-
氨基酸衍
生物是通过将N-(1-
苯并三唑羰基)
氨基酸酰胺4a-o与
羟胺氨解而制备的。乙内
酰胺4的碱催化环化反应合成了乙内酰
脲衍
生物6a-e,m,p。X射线晶体结构分析表明6e中的C5原子具有S构型,与起始试剂l-亮
氨酸的构型。在羟基
脲的L-
氨基酸衍
生物中,5h和5i特别抑制鼠白血病和人T淋巴细胞(IC(50)= 10-19 microM),并且相对于正常人成纤维细胞具有选择性(WI 38)。羟基
脲5m和5o的d-
氨基酸衍
生物抑制所有肿瘤
细胞系的生长(IC(50)= 4.8-83.9 microM),但不抑制正常成纤维细胞的生长(WI 38; IC(50)> 100 microM)。抗病毒评估结果显示,N-(1-
苯并三唑羰基)
氨基酸酰胺4m和乙内酰
脲6m对CMV的Davis菌株具有显着活性(4m,
EC(50)= 3.2 microg / mL; 6m,
EC(50)=