novel efficient tandem reaction of hydrazones and α-bromo ketones is reported for the preparation of 1,3,5-trisubstituted pyrazoles by visible light catalysis. In this system, the monosubstituted hydrazones show wonderful reaction activity with alkyl radicals, generated from α-bromo ketones. A radical addition followed by intramolecular cyclization affords the important pyrazole skeleton in good to
Preparation and Biological Activities of Novel Cuminaldehyde Derivatives
作者:Pardeep Kaur、Sunita Sharma、Jyoti Gaba
DOI:10.1080/00304948.2020.1871574
日期:2021.5.4
(2021). Preparation and Biological Activities of Novel Cuminaldehyde Derivatives. Organic Preparations and Procedures International: Vol. 53, No. 3, pp. 240-253.
Synthesis of novel 5-substituted phenyl-3-(p-isopropylphenyl)-1-phenylformazan and their biological activities
作者:Ayşe ŞAHİN YAĞLIOĞLU、Hülya ŞENÖZ
DOI:10.3906/kim-1612-42
日期:——
Novel 1-substituted 3-(p-isopropylphenyl)-5-phenylformazans (3a--g) were synthesized and characterized by elemental analysis, $^1}$H NMR, and FT-IR techniques and UV-visible spectroscopy. Antiproliferative activities of 3a--g against HeLa and C6 cells were determined using the BrdU cell proliferation ELISA assay. 5-Florouracil was used as the positive control. The effects of substituents (--H, --CH$_3}$, and --I) and their positions ($ortho$, $meta$, and $para$) on the antiproliferative activities were evaluated. The results of the assay indicate that I substituent exhibited higher activity against the cells at the $meta$ and $para$ positions than --CH$_3}$ and --H substituents. 3a--g exhibited both high antiproliferative activities against C6 cells and noncytotoxicity. 3a--g may be anticancer drug candidates.