Synthesis and γ-radiolysis of 2′-deoxy-5-fluorouridine and 5-fluorouridine derivatives
作者:Tokuyuki Kuroda、Koji Hisamura、Ikuo Matsukuma、Hiroshi Nishikawa、Makoto Morimoto、Tadashi Ashizawa、Nobuhiro Nakamizo、Yoshio Otsuji
DOI:10.1002/jhet.5570290516
日期:1992.8
Seventeen compounds having a variety of substituents at the 3- and 5′-positions of 2′-deoxy-5-fluorouridine (5-FUdR) and 5-fluorouridine (5-FUR) were synthesized, and their γ-radiolysis in aqueous solutions were studied. The compounds having thioureido (RNHCSNH, R H, PhCH2, acyl) and thiocarbonylamino (XCSNH, X PhCH2S, PhO) groups at the 3-position of 5-FUdR were efficiently cleaved to give 5-FUdR
合成了17种在2'-脱氧-5-氟尿苷(5-FUdR)和5-氟尿苷(5-FUR)的3-和5'-位置具有多种取代基的化合物,并将其在水溶液中进行γ辐解被研究了。在5-FUdR的3-位上具有硫脲基(RNHCSNH,R H,PhCH 2,酰基)和硫代羰基氨基(XCSNH,X PhCH 2 S,PhO)基团的化合物经有效裂解后生成具有高G值的5-FUdR对其水溶液进行γ射线辐照。这些裂解反应的活性物质是水合电子(e - aq),H •和HO •。但是,在5-FUdR和5-FUR的3-位具有二甲基亚磺酰亚氨基的化合物仅在其中e - aq成为主要活性物质的辐射分解条件下才提供5-FUdR和5-FUR 。在5-FUdR的3-位具有2-苯甲酰基噻唑基硫代羰基氨基的化合物显示出对HO的最高反应性。。讨论了这些γ-辐射分解反应的机理。对在5-FUdR的3位具有硫代羰基氨基的γ辐照化合物的抗细胞活性的研究表明,它