- Synthesis of Azepino[1,2-a]indole-10-amines via [6+1] Annulation of Ynenitriles with Reformatsky Reagent
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Lewis acid-catalyzed [6+1] annulation reactions of 2-cyano-1-propargyl- and 2-alkynyl-1-cyanomethyl-indoles with Reformatsky reagent are described. 8-Aryl, 8-alkyl-, 8-hetaryl-, 9-aryl, and 9-alkyl-azepino[1,2-a]indole amines were obtained through a 7-endo-mode cyclization of the β-aminoacrylate intermediates. The antiproliferative activity of the azepino[1,2-a]indoles analogs against the HCT-116 cells were also examined.
- Iioka, Ryoya,Yorozu, Kohei,Sakai, Yoko,Kawai, Rika,Hatae, Noriyuki,Takashima, Katsuki,Tanabe, Genzoh,Wasada, Hiroaki,Yoshimatsu, Mitsuhiro
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supporting information
p. 1553 - 1558
(2021/02/26)
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- ZnO nanoparticles as reusable heterogeneous catalyst for efficient one pot three component synthesis of imidazo-fused polyheterocycles
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An efficient, simple, environmentally benign synthetic protocol is developed for synthesis of biologically and medicinally relevant pyrazole coupled imidazo[1,2-a]pyridine derivatives via three component reaction of alkyl-4-formyl-1-phenyl-1H-pyrazole-3-c
- Swami, Suman,Devi, Nisha,Agarwala, Arunava,Singh, Virender,Shrivastava, Rahul
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p. 1346 - 1350
(2018/03/26)
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- Synthesis and biological activity of functionalized indole-2-carboxylates, triazino- and pyridazino-indoles
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Condensation of aryl hydrazines with ethyl pyruvate gave the respective hydrazones 4-6; Fischer indolization led to substituted-1H-indole-2-carboxylic acid ethyl esters 7-9. The Mannich reaction of these compounds with formaldehyde and morpholine yielded ethyl 3-(morpholinomethyl)-substituted-1H-indole-2- carboxylates 10-12. The 5,7-dichloro-1H-indole-2-carbohydrazide 13 was cyclized with methyl orthoformate in DMF to give 6,8-dichloro[1,2,4]triazino[4,5-a]indol- 1(2H)-one 14. Vilsmeier-Haack formylation of 7-9 gave ethyl 3-formyl- substituted-1H-indole-2-carboxylates 15-17 whose 2,2′-((5-chloro-2- (ethoxycarbonyl)-1H-indol-3-yl)methylene)bis-(sulfanediyl) diacetic acid 18 was prepared. The reaction of 15 and 16 with substituted anilines by conventional and microwave methods gave ethyl 3-(N-aryliminomethyl)-5-halo-1H-indole-2- carboxylates 19-29. In a cyclocondensation reaction of 19-25 with thiolactic acid or thioglycolic acid substituted indolylthiazolidinones 30-33 were prepared. Reaction of hydrazine hydrate with 15-17 did not give the respective hydrazones but directly led to the cyclized products substituted-3H- pyridazino[4,5-b]indol-4(5H)-ones 34-36, while a reaction with 2,4-dichlorophenylhydrazine yielded the uncyclized hydrazones. The chlorination of 35 and 36 with POCl3 gave pyridazino[ 4,5-b]indoles 39 and 40, respectively; reaction of the latter compounds with morpholine gave 4-(substituted-5H-pyridazino[4,5-b]indol-4-yl)morpholine 41 and 42. Mannich reaction of 34 with formaldehyde and N-ethylpiperazine gave 8-chloro-3-((4- ethylpiperazin-1-yl)methyl)-3H-pyridazino[ 4,5-b]indol-4(5H)-one 43. The microwave assistance of selected reactions has a profound effect on the reaction speed. The structures of the new compounds were confirmed by both analytical and spectral data. Some compounds were subjected to investigations concerning their antimicrobial, tranquilizing, and anticonvulsant activities.
- El-Gendy, Adel A.,Said, Mohamed M.,Ghareb, Nagat,Mostafa, Yasser M.,El-Ashry, El Sayed H.
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experimental part
p. 294 - 300
(2009/04/11)
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- Phenylindoles for the treatment of HIV
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The invention as disclosed herein is a method and composition for the treatment of HIV in humans and other host animals, that includes the administration of an effective HIV treatment amount of a phenylindole as described herein or a pharmaceutically acce
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- Process for the preparation of substituted N-(indole-2-carbonyl)- glycinamides
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Processes and intermediates for preparing compounds of Formula (I).
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- Substituted n-(indole-2-carbonyl)-glycinamides and derivatives as glycogen phosphorylase inhibitors
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PCT No. PCT/IB95/00442 Sec. 371 Date Dec. 2, 1997 Sec. 102(e) Date Dec. 2, 1997 PCT Filed Jun. 6, 1995 PCT Pub. No. WO96/39384 PCT Pub. Date Dec. 12, 1996Compounds of Formula (1) wherein R6 is carboxy, (C1-C8)alkoxycarbonyl, benzyloxycarbonyl, C(O)NR8R9 or C(O)R12 as glucogen phosphorylase inhibitors, pharmaceutical compositions containing such inhibitors and the use of such inhibitors to treat diabetes, hyperglycemia, hypercholesterolemia, hypertension, hyperinsulinemia, hyperlipidemia, atherosclerosis and myocardial ischemia in mammals.
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