89931-08-8

Upstream product

• 81-84-5 1,8-Naphthalic anhydride 
• 64-04-0 phenethylamine 

Downstream Products

• 1346518-14-6 4-[2-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)ethyl]benzenesulfonohydrazide 
• 1346518-16-8 4-[2-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)ethyl]-N'-[(1E)-phenylmethylene]benzenesulphonohydrazide 
• 1346518-17-9 (E)-4-[2-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)ethyl]-N'-[4-hydroxybenzylidene]benzenesulfonohydrazide 
• 1346518-18-0 (E)-4-[2-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)ethyl]-N'-[4-nitrobenzylidene]benzenesulfonohydrazide 
• 67075-37-0 anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetrone,2,9-bis(2-phenylethyl) 

Relevant academic research and scientific papers

Evaluation of apoptotic effect of cyclic imide derivatives on murine B16F10 melanoma cells

Cyclic imides are a large class of compounds obtained by organic synthesis including several sub-classes (succinimides maleimide, glutarimide, phthalimides naphtalimides, and its derivatives). Recently, some cyclic imide derivatives have shown important results as potential antitumor agents, as a Mitonafide and Amonafide. Based on this fact, we have studied antitumoral properties of nine cyclic imide derivatives, four of which are unpublished compounds, against Murine Melanoma Cells (B16F10). Initially, the MTT assay was used to select the compound with the best cytotoxic potential. After this selection, the compound 2-benzyl-1H-benzo[de]isoquinoline-1,3(2H)-dione (4), which showed the best cytotoxic effects, was evaluated by flow cytometry, and a significant increase was observed in the proportion of cells in the subG0/G1, S and G2/M phases accompanied by a significant decrease in the G0/G1 phases. Then the mechanism involved on the death route (necrosis or apoptosis) was evaluated the by bromide and acridine orange method and by an Annexin V-FITC Apoptosis Detection kit. These results confirm that the percentage of B16F10 cells observed in the sub G0/G1 phase were undergoing apoptosis. The biological effects observed in the current study for the cyclic imide derivatives suggested promising applications, especially for the prototype compound 4.

Greener Dye Synthesis: Continuous, Solvent-Free Synthesis of Commodity Perylene Diimides by Twin-Screw Extrusion

A continuous, scalable, and solvent-free method for the synthesis of various naphthalic imides and perylene diimides (PDIs) using twin-screw extrusion (TSE) is reported. Using TSE, naphthalic imides were obtained quantitatively without the need for excess amine reactant or product purification. With good functional-group tolerance, alkyl and benzyl amine derived PDIs (incl. commercial dyes) were obtained in 50–99 % yield. Use of K2CO3, enabled synthesis of more difficult aniline-derived PDIs. Furthermore, an automated continuous TSE process for Pigments Black 31 and 32 is demonstrated, with a throughput rate of about 1500 g day?1, corresponding to a space time yield of about 30×103 kg m?3 day?1, which is 1–2 orders of magnitude greater than for solvent-based batch methods. These methods provide substantial waste reductions and improved efficiency compared to conventional solvent-based methods.

Discovery and Characterization of Novel Naphthalimide Analogs as Potent Multitargeted Directed Ligands against Alzheimer's Disease

Current therapeutic drugs for Alzheimer's disease (AD) can only offer limited symptomatic benefits and do not halt disease progression. Multitargeted directed ligands (MTDLs) have been considered to be a feasible way to treat AD due to the multiple neuropathological processes in AD. Previous studies proposed that compounds containing two aromatic groups connected by a carbon chain should act as effective amyloid β (Aβ) aggregation inhibitors although the optimal length of the carbon chain has not been explored. In the current study, a series of naphthalimide analogs were designed and synthesized based on the proposed structure and multiple bioactivities beneficial to the AD treatment were reported. In vitro studies showed that compound 8, which has two aromatic groups connected by a two-carbon chain, exhibited significant inhibition of Aβ aggregation through the prevention of elongation and association of Aβ fibril growth. Furthermore, this compound also displayed antioxidative activities and neuroprotection from Aβ monomer induced toxicity in primary cortical neurons. The results of the present study highlight a novel naphthalimide-based compound 8 as a promising MTDL against AD. Its structural elements can be further explored for enhanced therapeutic capabilities.