O 6-(Benzotriazol-1 H-yl) guanosine and its 2′-deoxy analogue are readily converted to the O 6-allyl derivatives that upon diazotization with t-BuONO and TMS-N3 yield the C-2 azido derivatives. We have previously analyzed the solvent-dependent azide· tetrazole ...
[Wacharasindhu, Sumrit; Bardhan, Sujata; Wan, Zhao-Kui; Tabei, Keiko; Mansour, Tarek S. Journal of the American Chemical Society, 2009 , vol. 131, p. 4174 - 4175]