Bu<sub>4</sub>NI-Catalyzed, Radical-Induced Regioselective <i>N</i>-Alkylations and Arylations of Tetrazoles Using Organic Peroxides/Peresters
作者:Suresh Rajamanickam、Chitranjan Sah、Bilal Ahmad Mir、Subhendu Ghosh、Garima Sethi、Vinita Yadav、Sugumar Venkataramani、Bhisma K. Patel
DOI:10.1021/acs.joc.9b02875
日期:2020.2.21
using tert-butyl hydroperoxide (TBHP) as the methyl source, alkyl diacyl peroxides as the primary alkyl source, alkyl peresters as the secondary and tertiaryalkyl sources, and aryl diacyl peroxides as the arylating source. These reactions proceed without pre-functionalization of tetrazole and in the absence of any metal catalysts. Here, peroxides serve the dual role of oxidants as well as alkylating or
Palladium- and copper-catalyzed selective arylation of 5-aryltetrazoles by diaryliodonium salts
作者:Irina P. Beletskaya、Dmitri V. Davydov、Matvey S. Gorovoy
DOI:10.1016/s0040-4039(02)01325-4
日期:2002.8
Palladium(0)-catalyzed arylation of 5-aryltetrazoles in t-BuOH at 80°C with diaryliodoniumsalts proceeds in the presence of copper(II) phenylcyclopropyl carboxylate regioselectively at the N2 position.
Various N-sulfonylamino acid derivatives were synthesized and evaluated for their in vitro and in vivo activities to inhibit type IV collagenase (MMP-9 and MMP-2). When the amino acid residue and the sulfonamide moiety were modified, their inhibitory activities were greatly affected by the structure of the sulfonamide moiety. A series of aryl sulfonamide derivatives containing biaryl, tetrazole, amide, and triple bond were found to be potent and highly selective inhibitors of MMP-9 and MMP-2 In addition, these compounds were orally active in animal models of tumor growth and metastasis. These results revealed the potential of the N-sulfonylamino acid derivatives as a new type of candidate drug for the treatment of cancer.