63224-35-1Relevant articles and documents
A more sustainable isothiocyanate synthesis by amine catalyzed sulfurization of isocyanides with elemental sulfur
Nickisch,Conen,Gabrielsen,Meier
, p. 3134 - 3142 (2021/01/28)
Isothiocyanates (ITCs) are typically prepared using amines and highly toxic reagents such as thiophosgene, its derivatives, or CS2. In this work, an investigation of a multicomponent reaction (MCR) using isocyanides, elemental sulfur and amines revealed that isocyanides can be converted to isothiocyanates using sulfur and catalytic amounts of amine bases, especially DBU (down to 2 mol%). This new catalytic reaction was optimized in terms of sustainability, especially considering benign solvents such as Cyrene or γ-butyrolactone (GBL) under moderate heating (40 °C). Purification by column chromatography was further optimized to generate less waste by maintaining high purity of the product. Thus, E-factors as low as 0.989 were achieved and the versatility of this straightforward procedure was shown by converting 20 different isocyanides under catalytic conditions, while obtaining moderate to high yields (34-95%). This journal is
Novel thiosemicarbazone derivatives containing indole fragment as potent and selective anticancer agent
He, Zhangxu,Qiao, Hui,Yang, Feifei,Zhou, Wenjuan,Gong, Yunpeng,Zhang, Xinhui,Wang, Haojie,Zhao, Bing,Ma, Liying,Liu, Hong-min,Zhao, Wen
, (2019/10/14)
Potent and safe anticancer drugs research and development are still on the way to human health. In this report, a series of novel thiosemicarbazone derivatives containing indole fragment were designed and synthesized. Most compounds exhibited excellent antiproliferative activity against PC3, MGC803 and EC109 cell lines with low micromolar IC50 (0.14–12μM). Especially, compound 5j can selectively inhibit PC3 cells in three tested tumor cells with IC50 value of 0.14 μM, which may be attributed to a synergistic effect after introducing indole fragment into the TSC structure. Meanwhile, compound 5j displayed more selectivity in PC3 cells toward two normal WPMY-1 and GES-1 cell lines, compared to those of 3-AP and DPC. We also found that 5j can effectively inhibit PC3 cell proliferation, colonization and induce apoptosis. What's more, 5j may significantly suppress migration and invasion by blocking the EMT process but had no effect on cell cycle. Collectively, our findings indicate that 5j with structure of thiosemicarbazone containing indole may serve as a useful anticancer lead for further optimization and development.
Synthesis of new alkylaminoalkyl thiosemicarbazones of 3-acetylindole and their effect on DNA synthesis and cell proliferation
Siatra-Papastaikoudi,Tsotinis,Raptopoulou,Sambani,Thomou
, p. 107 - 114 (2007/10/02)
The preparation of a number of thiobemicarbazones of 3-acetylindole is described. These compounds were evaluated in vitro for their effect on proliferation and cell-division delays in cultured human peripheral blood lymphocytes, and their effect on DNA synthesit in T-cell leukemia Molt-4 cells.
