1927-33-9

Upstream product

• 50-65-7 Niclosamide 
• 541-41-3 chloroformic acid ethyl ester 
• 32315-10-9 bis(trichloromethyl) carbonate 

Relevant academic research and scientific papers

Structure-activity studies of Wnt/β-catenin inhibition in the Niclosamide chemotype: Identification of derivatives with improved drug exposure

The Wnt signaling pathway plays a key role in regulation of organ development and tissue homeostasis. Dysregulated Wnt activity is one of the major underlying mechanisms responsible for many diseases including cancer. We previously reported the FDA-approved anthelmintic drug Niclosamide inhibits Wnt/β-catenin signaling and suppresses colon cancer cell growth in vitro and in vivo. Niclosamide is a multi-functional drug that possesses important biological activity in addition to inhibition of Wnt/β-catenin signaling. Here, we studied the SAR of Wnt signaling inhibition in the anilide and salicylamide region of Niclosamide. We found that the 4′-nitro substituent can be effectively replaced by trifluoromethyl or chlorine and that the potency of inhibition was dependent on the substitution pattern in the anilide ring. Non-anilide, N-methyl amides and reverse amide derivatives lost significant potency, while acylated salicylamide derivatives inhibited signaling with potency similar to non-acyl derivatives. Niclosamide's low systemic exposure when dosed orally may hinder its use to treat systemic disease. To overcome this limitation we identified an acyl derivative of Niclosamide, DK-520 (compound 32), that significantly increased both the plasma concentration and the duration of exposure of Niclosamide when dosed orally. The studies herein provide a medicinal chemical foundation to improve the pharmacokinetic exposure of Niclosamide and Wnt-signaling inhibitors based on the Niclosamide chemotype. The identification of novel derivatives of Niclosamide that metabolize to Niclosamide and increase its drug exposure may provide important research tools for in vivo studies and provide drug candidates for treating cancers with dysregulated Wnt signaling including drug-resistant cancers. Moreover, since Niclosamide is a multi-functional drug, new research tools such as DK520 could directly result in novel treatments against bacterial and viral infection, lupus, and metabolic diseases such as type II diabetes, NASH and NAFLD.

CHEMICAL MODULATORS OF SIGNALING PATHWAYS AND THERAPEUTIC USE

Described are methods of treating a disease associated with dysregulation of the Wnt/Frizzled signaling pathway. The methods include identifying subjects in need of therapy, administering inhibitors of the Wnt/Frizzled signaling pathway, pharmaceutical compositions including the inhibitors, and methods of using the compounds and compositions for treating cancer, bacterial and viral infection, lupus, type II diabetes, nonalcoholic steatohepatitis (NASH) and nonalcoholic fatty liver disease (NAFLD) in a subject.

Dihydro benzoxazinones and benzoxazinediones' derivatives : thesis and study as bactericides and fungicides

A series of 3,4 dihydro 2 H 1,3 benzoxazine 2,4 diones and 3,4 dihydro 2 H 1,3 benzoxazine 4 ones were synthesized from several salicylamides and salicylanilides. Their antibacterial and antifungal activities in vitro were studied on Staphylococcus aureus 209 P A.T.C.C. (6538 P), Pseudomonas aeruginosa I.P. C.C.E.B. 481, Escherichia coli K 12 C600 (λ-) and Candida albicans. Always negative on colibacillus, activity on Staphylococcus aureus seems to be conditioned by presence of halogeno or nitro substituents: one of the compounds is notably active. Transformation into the heterocyclic derivative generally lowers or cancels action on Candida albicans; conversely, it frequently provokes action on Bacillus pyocyaneus on which some monoketonic derivatives were quite effective.