39161-52-9

Usage

InChI:InChI=1/C14H9NO3/c16-13-11-4-2-1-3-9(11)10-6-5-8(14(17)18)7-12(10)15-13/h1-7H,(H,15,16)(H,17,18)

Upstream product

• 84392-17-6 4'-(trifluoromethyl)-2-biphenylcarboxylic acid 
• 361444-27-1 2'-nitro-biphenyl-2,4'-dicarboxylic acid dimethyl ester 
• 89976-27-2 methyl ester of 4-iodo-3-nitrobenzoic acid 
• 610-97-9 o-iodo-methyl-benzoic acid 
• 39180-41-1 methyl 6-oxo-5,6-dihydrophenanthridine-3-carboxylate 

Relevant academic research and scientific papers

Synthesis of substituted 5[H]phenanthridin-6-ones as potent poly(ADP-ribose)polymerase-1 (PARP1) inhibitors

1-, 2-, 3-, 4-, 8-, or 10-Substituted 5(H)phenanthridin-6-ones were synthesized and found to be potent PARP1 inhibitors. Among the 28 compounds prepared, some showed not only low IC50 values (compound 1b, 10 nM) but also desirable water solubility characteristics. These properties, which are superior to the common PARP1 inhibitors such as benzamides and isoquinolin-1-ones, are essential for potential therapeutic usage. The variety of compounds allows SAR analysis of favored substituents and substituted positions on 5(H)phenanthridin-6-one ring.

Anomals Schmidt reaction products of phenylacetic acid and derivatives

Treatment of carboxylic acids with sodium azide in sulfuric acid normally results in decarboxylation with conversion of the carboxylic acid to an amine (the Schmidt reaction). However, many side reactions have been reported to occur, particulary in the case of α-aryl carboxylic acids, such as sulfonation, direct amination of the phenyl ring, cyclization to a lactam, and elimination of side chains to give aniline. In this study, the reactions of a variety of analogues of phenylacetic acid under given reaction conditions are examined to determine which characteristics are important in the competing side reactions. Some reactions were carried out with TEMPO free radical as a radical scavenger to investigate whether direct amination proceeds by a radical intermediate. Phenylacetic acid is shown to give an ortho-aminated diamine product instead of the para-aminated one expected from direct amination. A mechanism for this side reaction, involving cyclization to a lactam intermediate followed by further cleavage, is proposed; an analogue of the hypothetical intermediate has been isolated for biphenylacetic acids.