99743-35-8

Upstream product

• 908093-98-1 diazodiphenylmethane 
• 99-96-7 4-hydroxy-benzoic acid 
• 5350-57-2 benzophenone hydrazone 

Downstream Products

• 256410-74-9 (3S,4S)-4-(diphenylmethoxycarbonyl)phenoxy-1-[(diphenylmethyl)aminocarbonyl]-3-(2-ethoxybenzyl)azetidin-2-one 
• 256410-64-7 4-[(2S,3S)-3-(2-Ethoxy-benzyl)-4-oxo-1-((R)-1-phenyl-propylcarbamoyl)-azetidin-2-yloxy]-benzoic acid benzhydryl ester 
• 256410-42-1 (3S,4S)-4-(4-diphenylmethoxycarbonyl)phenoxy-3-(2-methoxybenzyl)-1-[(R)-(1-phenylpropyl)aminocarbonyl]azetidin-2-one 
• 256410-31-8 4-[(2S,3S)-3-(2-Methoxy-benzyl)-4-oxo-1-((R)-1-phenyl-ethylcarbamoyl)-azetidin-2-yloxy]-benzoic acid benzhydryl ester 
• 256410-95-4 (2S,3S)-3-Benzyl-3-ethyl-2-[4-(4-methyl-piperazine-1-carbonyl)-phenoxy]-4-oxo-azetidine-1-carboxylic acid ((R)-1-phenyl-ethyl)-amide 
• 402563-61-5 (3S,4S)-3-benzyl-4-[4-(1,1-diphenylmethoxycarbonyl)phenoxy]-1-[(S)-1-(phenylethyl)aminocarbonyl]azetidin-2-one 
• 256409-76-4 (3S,4S)-3-benzyl-4-[4-(1,1-diphenylmethoxycarbonyl)phenoxy]-1-[(R)-1-(phenylethyl)aminocarbonyl]azetidin-2-one 
• 402563-62-6 (3S,4R)-3-benzyl-4-[4-(1,1-diphenylmethoxycarbonyl)phenoxy]-1-[(S)-1-(phenylethyl)aminocarbonyl]azetidin-2-one 
• 256409-94-6 (3S,4R)-3-benzyl-4-[4-(1,1-diphenylmethoxycarbonyl)phenoxy]-1-[(R)-1-(phenylethyl)aminocarbonyl]azetidin-2-one 
• 256410-72-7 4-[(2S,3S)-1-(Benzhydryl-carbamoyl)-3-(2-ethoxy-benzyl)-4-oxo-azetidin-2-yloxy]-benzoic acid 
• 402563-70-6 4-[(2S,3S)-1-(Benzhydryl-carbamoyl)-3-(2-isopropoxy-benzyl)-4-oxo-azetidin-2-yloxy]-benzoic acid 
• 256410-19-2 (2S,3R)-3-Benzyl-2-[4-(4-methyl-piperazine-1-carbonyl)-phenoxy]-4-oxo-azetidine-1-carboxylic acid ((R)-1-phenyl-ethyl)-amide 
• 402563-64-8 (2S,3S)-3-Benzyl-2-[4-(4-methyl-piperazine-1-carbonyl)-phenoxy]-4-oxo-azetidine-1-carboxylic acid ((S)-1-phenyl-ethyl)-amide 
• 256409-67-3 (2S,3S)-3-Benzyl-2-[4-(4-methyl-piperazine-1-carbonyl)-phenoxy]-4-oxo-azetidine-1-carboxylic acid ((R)-1-phenyl-ethyl)-amide 

Relevant academic research and scientific papers

Synthesis of esters by in situ formation and trapping of diazoalkanes

A general method has been developed for the in situ formation and trapping of diazoalkanes by carboxylic acids to form esters. The method is applicable to a large variety of carboxylic acids using diazo compounds that are formed from the hydrazones of benzaldehydes and aryl ketones. In situ reaction monitoring with IR spectroscopy (ReactIR) was used to demonstrate that slow addition of the hydrazone to a mixture of oxidant and carboxylic acid avoids the buildup of the diazo compound. This method enables the safe preparation of esters from simple precursors without isolation of diazo compounds.

Design, synthesis and pharmacological evaluation of 3-benzylazetidine-2-one-based human chymase inhibitors

3-Benzylazetidine-2-one derivatives were designed and evaluated as a novel series of chymase inhibitors. Structure-activity relationship studies of 3-benzylazetidine-2-ones led to compounds 23, which exhibited 3.1nM inhibition of human chymase and enhancement of stability in human plasma (t1/2 6 h). Copyright