856983-89-6

Upstream product

• 100-66-3 methoxybenzene 
• 3153-44-4 4-(4-methoxy-phenyl)-4-oxo-butyric acid 

Downstream Products

• 55234-56-5 4-(4-methoxy-phenyl)-4-oxo-butyronitrile 
• 7182-43-6 4-(4-hydroxy-phenyl)-4-oxo-butyronitrile 

Relevant academic research and scientific papers

Substituted 4-oxo-crotonic acid derivatives as a new class of protein kinase B (PknB) inhibitors: synthesis and SAR study

Protein kinase B (PknB) is an essential serine/threonine protein kinase required for Mycobacterium tuberculosis (M. tb) cell division and cell-wall biosynthesis. A high throughput screen using PknB identified a (E)-4-oxo-crotonic acid inhibitor, named YH-8, which was used as a scaffold for SAR investigations. A significant improvement in enzyme affinity was achieved. The results indicated that the α,β-unsaturated ketone scaffold and “trans-” configuration are essential for the activity against PknB. And compounds with an aryl group, especially with electron-withdrawing substituents on benzene ring, exhibited four fold potency than that of YH-8.

(Phenylmethoxy)phenyl Derivatives of Ω-Oxo- and Ω-Tetrazolylalkanoic Acids and Related Tetrazoles. Synthesis and Evaluation as Leukotriene D4 Receptor Antagonists

Two series of (phenylmethoxy)phenyl compounds derived from the structure of LY163443 were synthesized and evaluated as leukotriene D4 receptor antagonists.In the Ω--Ω-oxoalkanoic acid series, 5-phenyl>-3,3-dimethyl-5-oxopentanoic acid (8) was the most potent antagonist of LTD4-induced contractions of guinea pig ileum (pKB of 7.60) and LTD4 pressor response in pithed rats (ED50 of 1.4 mg/kg iv).Replacing the carboxylic acid function with 5-tetrazole gave slightly more potent compounds.Inthe Ω-alkyl>tetrazolyl>alkanoic acid series, replacing the carboxylic acid with 5-tetrazole gave compounds that were equally effective in the guinea pig ileum but more potent in vivo against the LTD4 pressor response in rat.The pKB value in the guinea pig ileum for 1--2H-tetrazol-5-yl>methyl>phenoxy>methyl>phenyl>ethanone (25) was 7.87 and the ED50 for antagonism of the LTD4 pressor response was 4.0 mg/kg iv.The sodium salts of 8 (9) and 25(26) given by the iv route of administration antagonized LTD4-induced cardiovascular alterations in anesthetized rat and LTD4-induced bronchoconstriction in guinea pig in a dose-dependent manner.Oral activity was also demonstrated against the LTD4-induced bronchoconstriction in guinea pig.