New 1-hydroxy-1,1-bisphosphonates derived from 1H-pyrazolo[3,4-b]pyridine: synthesis and characterization

C., Teixeira,Fátima; Teresa, Duarte,M; Teixeira, Fátima C.; Lucas, Carla; Lucas,Carla,; Curto, M. João M.; M., Curto,M João; Neves, M.; Neves,M,; Duarte, M. Teresa; André, Vânia; André,Vânia,; S., Teixeira,António P.; Teixeira, António P. S.

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New 1-hydroxy-1,1-bisphosphonates derived from 1H-pyrazolo[3,4-b]pyridine: synthesis and characterization

Journal article published in 2013 by Teixeira,Fátima C., Duarte,M Teresa, Fátima C. Teixeira, Carla Lucas, Lucas,Carla, M. João M. Curto, Curto,M João M., M. Neves, Neves,M, M. Teresa Duarte

, Vânia André

, André,Vânia, Teixeira,António P. S., António P. S. Teixeira

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Abstract

A number of 1H-pyrazolo[3,4-b]pyridine derivatives, starting from 2-chloro-3-formyl pyridine, was synthesized to obtain new 1-hydroxybisphosphonates, a class of compounds with potential biological interest. Spectroscopic data were used to characterize all compounds and to identify N-1 and N-2 regioisomers, and mono-and bisphosphonates derivatives. X-ray diffractometry studies of compound 7a confirmed the proposed structure.