This review covers and summarizes comprehensive data reported within the period from 2017 to 2021 on the synthetic strategies and approaches to 1H-pyrazolo[3,4-b]pyridine derivatives. Methods for the synthesis are systematized according to the method to assemble the pyrazolopyridine system, whereas their advantages and drawbacks are considered.

中文翻译：

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1H-吡唑并[3,4-b]吡啶衍生物的合成方法

本综述涵盖并总结了 2017 年至 2021 年期间报告的关于 1 H-吡唑并[3,4-b]吡啶衍生物的合成策略和方法的综合数据。根据吡唑并吡啶体系的组装方法对合成方法进行了系统化，同时考虑了它们的优缺点。