Preparation, characterization, antioxidant properties of novel Schiff bases including 5-chloroisatin-thiocarbohydrazone
Yazarlar (2)
Prof. Dr. Temel Kan BAKIR Kastamonu Üniversitesi, Türkiye
Jamal Basir Lawag
Kastamonu Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Research on Chemical Intermediates
Dergi ISSN 0922-6168 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 01-2020
Kabul Tarihi 14-02-2020 Yayınlanma Tarihi 28-02-2020
Cilt / Sayı / Sayfa 46 / 5 / 2541–2557 DOI 10.1007/s11164-020-04105-y
Makale Linki http://link.springer.com/10.1007/s11164-020-04105-y
UAK Araştırma Alanları
Fiziksel Kimya
Özet
Thanks to its pharmaceutical properties, the Schiff group of isatin has recently had a wide range of uses. In this study, seven new Schiff bases of isatin and its derivatives were prepared from thiocarbohydrazide, isatin and substituted aldehydes in the presence of ethanol under reflux. The chemical structures of the products were confirmed by 1H NMR, 13C NMR, IR and elemental analysis. The in vitro antioxidant features of all the compounds were evaluated by 1,1-diphenyl-2-picrylhydrazyl free radical scavenging method. The antioxidant effect was evaluated separately in two different stages: monosubstituted products synthesized with aldehyde groups and disubstituted products bound with isatin group. Accordingly, the compounds 3 and 4 showed the highest antioxidant activity and the isatin group suppressed the antioxidant effect of the disubstituted Schiff bases products.
Anahtar Kelimeler
5-chloroisatin | Antioxidant evaluation | DPPH | Schiff bases | Thiocarbohydrazone