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Synthesis of 5′-amino- and 5′-azido-2′,5′-dideoxy nucleosides from thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione

✍ Scribed by A. A. El-Barbary; N. R. El-Brollosy; E. B. Pedersen; C. Nielsen

Publisher
Springer Vienna
Year
1995
Tongue
English
Weight
467 KB
Volume
126
Category
Article
ISSN
0026-9247

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## Abstract magnified image An efficient one‐pot access for the synthesis of the previously unreported tetracyclic fused pyrimido‐[4″,5″:4′,5′]thieno[3′,2′:4,5]thieno[3,2‐__d__]pyrimidine (**3**) and 1,2,3‐triazine[4″,5″:4′,5′]thieno‐[3′,2′:4,5]thieno‐[3,2‐__d__]‐1,2,3‐triazine (**5**) heteroaroma