Synthetic approaches to the guanosine and xanthosine analogs 5-amino-3-.beta.-D-ribofuranosylpyrazolo[3,4-e][1,3]oxazin-7-one and 3-.beta.-D-ribofuranosylpyrazolo[3,4-e][1,3]oxazine-5,7-dione and studies of their antitumor potential
作者:Ruiming Zou、Vladimir G. Beylin、Michael P. Groziak、Linda L. Wotring、Leroy B. Townsend
DOI:10.1021/jm00111a005
日期:1991.7
5-Amino-3-beta-D-ribofuranosylpyrazolo[3,4-e][1,3]oxazin-7-o ne has been synthesized via cyclization of the appropriately protected pyrazofurin derivatives and subsequent transformations of the heterocyclic moiety. This guanosine analogue was marginally cytotoxic to L1210 cells in vitro. The xanthosine analogue 3-beta-D-ribofuranosylpyrazolo[3,4-e][1,3]oxazine-5,7-dione was also synthesized, and was