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Relevant academic research and scientific papers

Synthesis and biological evaluation of nitric oxide-releasing hybrids from gemcitabine and phenylsulfonyl furoxans as anti-tumor agents

A series of novel hybrids 10a-m were designed and synthesized by coupling phenylsulfonyl furoxans with gemcitabine through various diols or alcohol amine linkers, and their biological activities were evaluated in vitro. Most of the hybrids exhibited good to moderate anti-tumor activities, which are associated with NO release. In particular, hybrid 10e showed excellent anticancer activities which were more potent than or comparable to gemcitabine. However, inhibition of nucleoside transport only significantly decreased the inhibitory rates of gemcitabine against HepG2 cells but not 10e, and the inhibitory rates of 10e were partially reduced by pre-treatment with hemoglobin, demonstrating that the anti-tumor activity of 10e might result from the synergic effect of high levels of NO production and gemcitabine fragment. In addition, compound 10ecould apparently induce cell apoptosis by regulating apoptotic relative proteins. Therefore, our novel findings provide a proof of principle in the design of new furoxan/gemcitabine hybrids for the intervention of human cancers.

Furoxan azoxyNO donor type tadine derivative and preparation method thereof (by machine translation)

The invention discloses a furoxan azoxyNO donor type tadine derivative and a preparation method, and belongs to the technical field of chemical synthesis of medicines: the invention has the following structural formula shown in the general formula. Wherein. In addition, coumaric acid is selected as a connecting base, so that the curative effect; in addition, the compound disclosed by the invention can effectively release NO, and beneficial attempts are made for development of NO donor anti-atherosclerotic drugs in an external mode, and the method has the advantages of effectively improving the curative effect of drugs. 4 - R1 R2 (by machine translation)

Design, synthesis and biological evaluation of nitro oxide donating N-hydroxycinnamamide derivatives as histone deacetylase inhibitors

Novel nitro oxide (NO)-donating N-hydroxycinnamamide derivatives 12a-j were designed and synthesized by coupling the carboxyl group of N-hydroxycinnamamides with phenylsulfonylfuroxan through various diols or alkylol amines, and their in vitro biological activities were evaluated. It was discovered that most of target compounds showed good histone deacetylases (HDACs) inhibition and anti-tumor activities, particularly for 12j, which had great HDACs inhibitory activities (IC50s=0.15-0.26 μm) and antiproliferative effects (IC50s=3.21-7.12 μm) comparable to suberoylanilide hydroxamic acid (SAHA) (IC50s=0.16-1.41 μm for HDACs, IC50s=3.15-7.45 μm for cancer cell inhibition). Furthermore, compound 12j with strong antitumor activities produced high levels of NO (up to 8.0 μm of nitrites/nitrates) in colon cancer cells, and its antiproliferative activity was nearly half-diminished by hemoglobin (10 μm), an NO scavenger. These results suggest that the strong antiproliferative activity of 12j could be attributed to the additive effects of high levels of NO production and inhibition of HDAC in the cancer cells.

Synthesis and bioactivity of furoxan-based nitric oxide-releasing colchicine derivatives as anticancer agents

A series of novel nitric oxide-donating colchicine derivatives (9a-j) were synthesized by coupling furoxan with N-methyl colchiceinamide through an appropriate spacer arm and their cytotoxicity against four human cancer cell lines in vitro were evaluated by MTT method. It was found that many of the derivatives displayed significant activity, particularly, compound 9f showed more potent cytotoxic activities than colchicine.