Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Kethiri R. Reddy"'
Publikováno v:
ARKIVOC, Vol 2012, Iss 3, Pp 330-342 (2012)
Externí odkaz:
https://doaj.org/article/a1814b3c599849ffa661810d5fb7e5bd
Autor:
Taylor A. Choi, Kethiri R. Reddy, Jan Knöll, Hans-Joachim Knölker, Scott G. Franzblau, Micha P. Krahl, Anne Jäger, Tilo Krause, Ronny Forke, Regina Czerwonka
Publikováno v:
Medicinal Chemistry Research. 17:374-385
A series of carbazole derivatives with promising pharmacological properties has been prepared using either an iron-mediated or a palladium-catalyzed synthetic approach. The carbazole alkaloids carbazoquinocin C, carbazomadurin A and B, epocarbazolin
Publikováno v:
European Journal of Organic Chemistry. 2003:740-746
The total synthesis of the carbazole-1,4-quinol alkaloids carbazomycin G (7) and carbazomycin H (8) was achieved by a highly convergent iron-mediated construction of the carbazole framework. Electrophilic substitution of the arylamine 15 using the ir
Publikováno v:
Synthesis. 2002:557-564
A highly efficient total synthesis of the potent lipid peroxidation inhibitor carbazoquinocin C is presented. The key-step is a palladium(II)-catalyzed oxidative cyclization of an anilino-1,4-benzoquinone to a carbazole-1,4-quinone which proceeds in
Autor:
Kethiri R. Reddy, Hans-Joachim Knölker
Publikováno v:
Tetrahedron. 56:4733-4737
A highly convergent synthesis provides indolo[2,3- b ]carbazole in two steps and 36% overall yield from commercial m -phenylenediamine by a double iron-mediated consecutive C–C and C–N bond formation featuring the first double iron-mediated aryla
Publikováno v:
Tetrahedron Letters. 41:1171-1174
Starting from enantiopure (R)-propene oxide the first enantioselective total synthesis of the potent neuronal cell protecting alkaloid carquinostatin A has been accomplished by using iron- and nickel-mediated coupling reactions.
Publikováno v:
Synthetic Communications. 29:3781-3791
Hydrogen peroxide activated by boric acid in the presence of sulfuric acid has been shown to be an efficient oxidizing system for direct conversion of aromatic aldehydes and ketones to phenols.
Publikováno v:
Tetrahedron. 55:7645-7652
5-Methylpyrazole derivative 1 is metallated at the C-5 methyl carbon atom to form lithium 5-lithiomethyl-3-methylpyrazole-1-carboxylate 3 which on reaction with α-oxoketene dithioacetals 4a-d, 12a-c and 15a-b yields substituted and annelated pyrazol
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :3001-3004
Dihydropyrazolin-5-one dienolate 2 generated by deprotonation of 2,3-dimethyl-4-formyl-1-phenylpyrazolin-5-one (4-formylantipyrine) is shown to be an efficient anionic pyrazolone α-oxy-o-quinodimethane analog, which undergoes facile cycloaddition wi
Publikováno v:
Tetrahedron Letters. 39:8267-8270
The efficient palladium-catalyzed oxidative coupling of an anilinoquinone and subsequent regioselective introduction of the heptyl side chain provide the antioxidative substance carbazoquinocin C in four steps and 36% overall yield from aniline.