99532-46-4Relevant academic research and scientific papers
Indole compound and applications thereof, and pharmaceutical composition and applications thereof
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Paragraph 0100; 0101; 0116; 0117, (2019/01/09)
The present invention provides an indole compound and applications thereof, wherein the compound can effectively inhibit a CBP/EP300 Bromodomain receptor, and can be used as a drug for cancers, inflammatory diseases, autoimmune diseases, septicemia and viral infections.
An unusual and chemoselective reduction of ester grouping in nsubstituted-3-acetylindoles by sodium borohydride
Venkatanarayana, Muvvala,Dubey, Pramod K.
experimental part, p. 192 - 197 (2012/07/14)
Treatment of 3-acetylindoles 1(a-e) with ethyl chloroacetate in the presence of K2CO3 and tetrabutylammoniumbromide (TBAB) as phase transfer catalyst in DMF, resulted in the formation of the corresponding N-substituted derivatives, e
Novel and simple methodology for the synthesis of 3-acetylindoles and their N-alkyl derivatives using TBAB as phase transfer catalyst
Venkatanarayana,Dubey, Pramod K.
, p. 656 - 662 (2012/06/01)
Using 5% aq. NaOH, a simple method for the transformation of 3-cyanoacetylindoles 2(a-e) into 3-acetylindoles 3 (a-e), in good yields, is reported. Tetrabutylammoniumbromide (TBAB) is found to be an efficient phase transfer catalyst for the synthesis of N-alkyl derivatives 5(a-t) of 3-acetylindoles 3(a-e) giving products in excellent yields. 2 (a-e) were themselves obtained from simple indoles 1 (a-e) by reaction with cyano acetic acid in the presence of propionic anhydride at 100 °C for 5-10 min. Partial hydrolysis of 2 (a-e) under hot acidic conditions yielded the corresponding carboxamides α-(3-indolecarboxoyl)acetamides 4(a-e). Which could be readily transformed into the respective 3(a-e) by refluxing with 5% aq. NaOH for 2-2.5 h.
A Convenient Synthesis of 3-Acylindoles via Friedel-Crafts Acylation of 1-(Phenylsulfonyl)indole. A New Route to Pyridocarbazole-5,11-quinones and Ellipticine
Ketcha, Daniel M.,Gribble, Gordon W.
, p. 5451 - 5457 (2007/10/02)
A Friedel-Crafts acylation of 1-(phenylsulfonyl)indoles (1) with carboxylic acid anhydrides and acid chlorides in the presence of aluminum chloride gives 3-acyl-1-(phenylsulfonyl)indoles (2) in 81-99percent yields.Base hydrolysis converts 2 to 3-acylindoles (3) in 79-96percent yields.The reaction of 1-(phenylsulfonyl)indole (1a) with oxalyl chloride gives acid chloride 2h, which is converted to 3-cyanoindole (7) in three steps (75percent yield).Although a similar Friedel-Crafts alkylation of 1 was unsuccessful, in some cases the 3-acyl-1-(phenylsulfonyl)indoles 2a,e,f could be reduced to 3-alkyl-1-(phenylsulfonyl)indoles 8a,b,c in nearly quantitative yield with sodium borohydride in trifluoroacetic acid.The acid chloride derived from keto acid 9 did not cyclize to the desired pyridocarbazole-5,11-quinone 24 but rather to chloro keto lactam 10.However, acylation of 1a with acid chloride 22 followed by strong-base-mediated cyclization gives 24.Since quinone 24 has been previously converted to the alkaloid ellipticine 26, this route to 24 represents a new synthesis of ellipticine.Related synthetic schemes give rise to quinones 16 and 20.
