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Guanosine analogs. Synthesis of nucleosides of certain 3-substituted 6-aminopyrazolo[3,4-d]pyrimidin-4(5H)-ones as potential immunotherapeutic agents

✍ Scribed by Bontems, Roger J.; Anderson, Jack D.; Smee, Donald F.; Jin, Ai; Alaghamandan, Hassan A.; Sharma, Brahma S.; Jolley, Weldon B.; Robins, Roland K.; Cottam, Howard B.


Book ID
120032750
Publisher
American Chemical Society
Year
1990
Tongue
English
Weight
736 KB
Volume
33
Category
Article
ISSN
0022-2623

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## Abstract magnified image The thienopyridine derivative **2**, obtained from reaction of acetoacetic ester with **1** in the presence of tin tetrachloride, was treated with triphenylphosphine in hexachloroethane and Et~3~N to give iminophosphorane **3**. Iminophosphorane **3** reacted with pheny