Synthesis, in vitro α-amylase inhibitory, and radicals (DPPH & ABTS) scavenging potentials of new N-sulfonohydrazide substituted indazoles
作者:Rafaila Rafique、Khalid Mohammed Khan、Arshia、Sridevi Chigurupati、Abdul Wadood、Ashfaq Ur Rehman、Uzma Salar、Vijayan Venugopal、Shahbaz Shamim、Muhammad Taha、Shahnaz Perveen
DOI:10.1016/j.bioorg.2019.103410
日期:2020.1
used to treat type-II diabetes mellitus, but also linked to several harmful effects. Therefore, it is essential to explore new and nontoxic antidiabetic agents with additional antioxidant properties. In this connection, a series of new N-sulfonohydrazide substituted indazoles 1-19 were synthesized by multistep reaction scheme and assessed for in vitro α-amylase inhibitory and radical (DPPH and ABTS)
Palladium-Catalyzed Regio- and Stereoselective Coupling–Addition of Propiolates with Arylsulfonyl Hydrazides: A Pattern for Difunctionalization of Alkynes
A new pattern for difunctionalization of alkynes via a palladium-catalyzed regio- and stereoselective coupling–addition of propiolates with arylsulfonylhydrazides is disclosed. The approach enables the synthesis of various highly functionalized (E)-vinylsulfones in satisfactory yields. Arylsulfonylhydrazides act as both aryl and sulfonyl sources via selective cleavage of Ar(C)–S and S–N bonds, which
Catalyst-free radical fluorination of sulfonyl hydrazides in water
作者:Lin Tang、Yu Yang、Lixian Wen、Xingkun Yang、Zhiyong Wang
DOI:10.1039/c5gc02755a
日期:——
The first catalyst-free fluorination of sulfonyl hydrazides for the synthesis of sulfonyl fluorides via a free-radical process has been developed.
对磺酰基腙进行的首次无催化氟化反应,通过自由基过程合成磺酰氟化物。
Catalyst-free thiolation of indoles with sulfonyl hydrazides for the synthesis of 3-sulfenylindoles in water
作者:Yu Yang、Sheng Zhang、Lin Tang、Yanbin Hu、Zhenggen Zha、Zhiyong Wang
DOI:10.1039/c6gc00313c
日期:——
A catalyst-free thiolation of indoles with sulfonyl hydrazides was efficiently developed in water under mild conditions without any ligand or additive. The reaction provided a variety of 3-sulfenylindoles with good...
An atom-economic sulfonylation of unsaturated benzylic alcohols in water is described. In this transformation, dual roles of sulfonyl hydrazides serving as both sulfonyl source and reductant have been demonstrated, which enabled a facile and green method to synthesize alkyl sulfones from unsaturated benzylic alcohols. Moreover, this approach provides a practical access to deuterated alkanes from the