Tetrahedron p. 8661 - 8670 (1998)
Update date:2022-08-11
Topics:
Chae, Whi-Gun
Chan, Thomas C. K.
Chang, Ching-Jer
5'-Deoxy-6-thioguanosine, 2',5'-dideoxy-6-thioguanosine, 5'-deoxy-6- mercaptopurine riboside and 2',5'-dideoxy-6-mercaptopurine riboside were synthesized enzymatically from thiopurine bases and corresponding ribosyl donors using nucleoside phosphorylase. This is the first report of trans-5'- deoxyribosylation to thiopurine bases by nucleoside phosphorylase. 5'-Deoxy- 6-thioguanosine selectively blocked the growth of v-ras-transformed human bronchial epithelial cells. In addition, the in vitro antitumor cytotoxicity data for 5'-deoxy- and 2',5'-dideoxy-6-thiopurine nucleosides were comparable to those for the corresponding thiopurine bases.
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