Synthesis and Evaluation of 2-Amino-9-(3-hydroxymethyl-4-alkoxycarbonyloxybut-1-yl)purines as Potential Prodrugs of Penciclovir
作者:Dae-Kee Kim、Namkyu Lee、Young-Woo Kim、Kieyoung Chang、Jae-Sun Kim、Guang-Jin Im、Won-Son Choi、Inho Jung、Taek-Soo Kim、Yong-Youn Hwang、Dong-Sun Min、Key An Um、Yong-Baik Cho、Key H. Kim
DOI:10.1021/jm980138g
日期:1998.8.1
fair to good yields. Of the prodrugs tested in mice, the isopropyl monocarbonate 6 achieved the highest mean urinary recovery of penciclovir (53%), followed in order by the propyl monocarbonate 5 (51%), the isopentyl monocarbonate 10 (51%), the ethyl monocarbonate 4 (50%), and famciclovir (48%). In rats, the methyl monocarbonate 3, 4, 6, the n-butyl monocarbonate 7, and 10 (39-41%) showed levels of mean
一系列2-氨基-9-(3-羟甲基-4-烷氧基羰基氧基丁-1-基)嘌呤(4-10)和2-氨基-9-(2-(2-oxo-1,3-dioxan-5合成了(yl)乙基)嘌呤(1)作为喷昔洛韦的潜在前药,并对其在小鼠和大鼠中口服喷昔洛韦的生物利用度进行了评估。在THF中用1,1'-羰基二咪唑处理2-(2-苄氧基乙基)丙烷-1,3-二醇(11),然后氢解除去所得环状碳酸酯12的苄基,得到5-(2-羟乙基) -1,3-二恶烷-2-酮(13)。醇13的甲磺酸化,然后使用无水Cs2CO3在DMF中将生成的甲磺酸酯14与2-氨基-6-氯嘌呤偶联反应,得到2-氨基-6-氯-9-(2-(2-氧代-1,3在硅胶上通过快速柱色谱纯化后,用EtOAc / MeCN / Et 3 N作为洗脱剂纯化-(二恶烷-5-基)乙基)嘌呤(16)。用活化的SiO 2作为路易斯酸将6-氯环状碳酸酯16氢化,然后在适当的醇和CHCl 3