76226-58-9

Upstream product

• 109-01-3 1-methyl-piperazine 
• 103-90-2 4-acetaminophenol 
• 77726-01-3 N-[4-Hydroxy-3-(4-methyl-piperazin-1-ylmethyl)-phenyl]-acetamide 

Downstream Products

• 107400-04-4 Benzofuran-2-carboxylic acid [4-hydroxy-3-(4-methyl-piperazin-1-ylmethyl)-phenyl]-amide 
• 17183-43-6 2-(4-methyl-piperazin-1-ylmethyl)-4-(4-nitro-benzoylamino)-phenol 
• 93958-40-8 N-(4-nitrophenyl)-N'-<4-hydroxy-3-(4-methylpiperazin-1-yl)methyl>phenylurea 
• 93958-39-5 N-(4-isothiocyanatophenyl)-N'-<4-hydroxy-3-(4-methylpiperazin-1-yl)methyl>phenylurea 
• 93978-65-5 4-(4-isothiocyanatobenzoyl)amino-2-(4-methylpiperazin-1-yl)methylphenol 
• 93958-47-5 4-(3,4-diaminobenzoyl)amino-2-(4-methylpiperazin-1-yl)methylphenol 
• 93958-44-2 4-(4-amino-3-nitrobenzoyl)amino-2-(4-methylpiperazin-1-yl)methylphenol 
• 93958-42-0 4-(4-aminobenzoyl)amino-2-(4-methylpiperazin-1-yl)methylphenol 
• 93958-88-4 2-(4-methylpiperazin-1-yl)methyl-4-benzoylaminophenol 
• 500565-15-1 4-((6-chloro-2-methoxyacridin-9-yl)amino)-2-((4-methylpiperazin-1-yl)methyl)phenol 
• 93958-86-2 2-(4-methylpiperazin-1-yl)methyl-4-(4-chloro-3-nitrobenzoyl)aminophenol 
• 93958-37-3 N-(4-nitrophenyl)-N'-<4-hydroxy-3-(4-methylpiperazin-1-yl)methyl>phenylthiourea 
• 93958-87-3 2-(4-methylpiperazin-1-yl)methyl-4-(4-acetamino-3-nitrobenzoyl)aminophenol 

Relevant academic research and scientific papers

Design, synthesis and in vitro cell-free/cell-based biological evaluations of novel ERCC1-XPF inhibitors targeting DNA repair pathway

The structure-specific ERCC1-XPF endonuclease is essential for repairing bulky DNA lesions and helix distortions induced by UV radiation, which forms cyclobutane pyrimidine dimers (CPDs), or chemicals that crosslink DNA strands such as cyclophosphamide and platinum-based chemotherapeutic agents. Inhibition of the ERCC1-XPF endonuclease activity has been shown to sensitize cancer cells to these chemotherapeutic agents. In this study, we have conducted a structure activity relationship analysis based around the previously identified hit compound, 4-((6-chloro-2-methoxyacridin-9-yl)amino)-2-((4-methylpiperazin1-yl)methyl)phenol (F06), as a reference compound. Three different series of compounds have been rationally designed and successfully synthesized through various modifications on three different sites of F06 based on the corresponding suggestions of the previous pharmacophore model. The in vitro screening results revealed that 2-chloro-9-((3-((4-(2-(dimethylamino)ethyl)piperazin-1-yl)methyl)-4-hydroxyphenyl)amino)acridin-2-ol (B9) has a potent inhibitory effect on the ERCC1-XPF activity (IC50 = 0.49 μM), showing 3-fold improvement in inhibition activity compared to F06. In addition, B9 not only displayed better binding affinity to the ERCC1-XPF complex but also had the capacity to potentiate the cytotoxicity effect of UV radiation and inhibiting the nucleotide excision repair, by the inhibition of removal of CPDs, and cyclophosphamide toxicity to colorectal cancer cells.

Targeting DNA Repair in Tumor Cells via Inhibition of ERCC1-XPF

The ERCC1-XPF heterodimer is a 5′-3′ structure-specific endonuclease, which plays an essential role in several DNA repair pathways in mammalian cells. ERCC1-XPF is primarily involved in the repair of chemically induced helix-distorting and bulky DNA lesions, such as cyclobutane pyrimidine dimers (CPDs), and DNA interstrand cross-links. Inhibition of ERCC1-XPF has been shown to potentiate cytotoxicity of platinum-based drugs and cyclophosphamide in cancer cells. In this study, the previously described ERCC1-XPF inhibitor 4-((6-chloro-2-methoxyacridin-9-yl)amino)-2-((4-methylpiperazin-1-yl)methyl)phenol (compound 1) was used as a reference compound. Following the outcome of docking-based virtual screening (VS), we synthesized seven novel derivatives of 1 that were identified in silico as being likely to have high binding affinity for the ERCC1-XPF heterodimerization interface by interacting with the XPF double helix-hairpin-helix (HhH2) domain. Two of the new compounds, 4-((6-chloro-2-methoxyacridin-9-yl)amino)-2-((4-cyclohexylpiperazin-1-yl)methyl)phenol (compound 3) and 4-((6-chloro-2-methoxyacridin-9-yl)amino)-2-((4-(2-(dimethylamino)ethyl) piperazin-1-yl) methyl) phenol (compound 4), were shown to be potent inhibitors of ERCC1-XPF activity in vitro. Compound 4 showed significant inhibition of the removal of CPDs in UV-irradiated cells and the capacity to sensitize colorectal cancer cells to UV radiation and cyclophosphamide.

Computer-aided drug design of small molecule inhibitors of the ERCC1-XPF protein–protein interaction

The heterodimer of DNA excision repair protein ERCC-1 and DNA repair endonuclease XPF (ERCC1-XPF) is a 5′–3′ structure-specific endonuclease essential for the nucleotide excision repair (NER) pathway, and it is also involved in other DNA repair pathways. In cancer cells, ERCC1-XPF plays a central role in repairing DNA damage induced by chemotherapeutics including platinum-based and cross-linking agents; thus, its inhibition is a promising strategy to enhance the effect of these therapies. In this study, we rationally modified the structure of F06, a small molecule inhibitor of the ERCC1-XPF interaction (Molecular Pharmacology, 84, 2013 and 12), to improve its binding to the target. We followed a multi-step computational approach to investigate potential modification sites of F06, rationally design and rank a library of analogues, and identify candidates for chemical synthesis and in vitro testing. Our top compound, B5, showed an improved half-maximum inhibitory concentration (IC50) value of 0.49 μM for the inhibition of ERCC1-XPF endonuclease activit, and lays the foundation for further testing and optimization. Also, the computational approach reported here can be used to develop DNA repair inhibitors targeting the ERCC1-XPF complex.

Aromatic amino analogues of artemisinin: Synthesis and in vivo antimalarial activity

Nine orally active novel artemisinin derivatives were prepared from artemisinin by four-step synthesis, and the compounds were evaluated in the rodent model using multidrug resistant Plasmodium yoelii nigeriensis. All of the compounds exhibited antimalarial activities with the ED50 ranging from 5.41 mg/kg-12.4 mg/kg. Among them, artemisinin derivative bearing N-(4-hydroxy-3- ((4-phenylpiperazin-1-yl)methyl)phenyl) moiety (5f) was found to be the most active compound and was found to be three times more potent than artemisinin (ED50 16.4 mg/kg). Birkhaeuser Boston 2009.

Microwave-induced Mannich reaction - Synthesis of some Mannich derivatives of p-aminophenol

Mono and bis substituted dialkylamino alkyl-p-aminophenol 3 are prepared by treating paracetamol 1 with formaldehyde and appropriate secondary amines followed by deacetylation using 6 M HCI in unmodified domestic microwave oven in unsealed borosil vessels

Synthesis of new arylaminoquinoxalines and their antimalarial activity in mice

2-Arylaminoquinoxalines were prepared by the condensation of 2-chloroquinoxaline with the appropriate Mannich bases in the presence of HCI. To synthesize the Mannich bases, 4-acetamidophenol was reacted with formaldehyde and dialkylamine to yield 3-[(dial