Attempted synthesis of 3-hydroxy-2-octadecylindole. Proposed structural revision of previously prepared 3-hydroxy-2-octadecylindole and a proposed structure of fistulosin
摘要:
A synthetic route to 3-hydroxy-2-octadecylindole, the putative structure of the novel indole alkaloid fistulosin, starting from 2-nitro-1-iodobenzene was examined. Key steps include formation of a 1-stannyl-substituted 1-methoxy-1-alkene from a Fischer chromium carbene, intermolecular Kosugi-Migita-Stille coupling, and a palladium-catalyzed reductive N-heteroannulation. Demethylation of 3-methoxy-2-octadecylindole, a possible immediate precursor to 3-hydroxy-2-octadecylindole, was unsuccessful and gave instead methyl 2-(1-oxononadecanyl)aminobenzoate. The structure of the isolated alkaloid was suggested to be 2-(1-oxooctaclecanyl)aminobenzoate by comparison of analytical data with a synthetic sample. In addition. oxidation of 2-octadecylindole gave a 2,2'-dimer, a compound identical to previously prepared 3-hydroxy-2-octadecylindole. (c) 2009 Elsevier Ltd. All rights reserved.
Attempted synthesis of 3-hydroxy-2-octadecylindole. Proposed structural revision of previously prepared 3-hydroxy-2-octadecylindole and a proposed structure of fistulosin
摘要:
A synthetic route to 3-hydroxy-2-octadecylindole, the putative structure of the novel indole alkaloid fistulosin, starting from 2-nitro-1-iodobenzene was examined. Key steps include formation of a 1-stannyl-substituted 1-methoxy-1-alkene from a Fischer chromium carbene, intermolecular Kosugi-Migita-Stille coupling, and a palladium-catalyzed reductive N-heteroannulation. Demethylation of 3-methoxy-2-octadecylindole, a possible immediate precursor to 3-hydroxy-2-octadecylindole, was unsuccessful and gave instead methyl 2-(1-oxononadecanyl)aminobenzoate. The structure of the isolated alkaloid was suggested to be 2-(1-oxooctaclecanyl)aminobenzoate by comparison of analytical data with a synthetic sample. In addition. oxidation of 2-octadecylindole gave a 2,2'-dimer, a compound identical to previously prepared 3-hydroxy-2-octadecylindole. (c) 2009 Elsevier Ltd. All rights reserved.
[EN] BIS-AMINO ACID BASED COMPOUND AND USE THEREOF<br/>[FR] COMPOSÉ À BASE D'ACIDES AMINÉS BIS ET SON UTILISATION
申请人:UNIV MISSOURI
公开号:WO2017223098A1
公开(公告)日:2017-12-28
Compositions comprising bis(tryptophan) derivatives are provided that act as antimicrobials. Also provided are methods for reversing antibiotic resistance in a bacterium, or recovering or enhancing antimicrobial activity of an antibiotic against a variety of microbes, by co-administration with a bis(tryptophan) derivative.
Attempted synthesis of 3-hydroxy-2-octadecylindole. Proposed structural revision of previously prepared 3-hydroxy-2-octadecylindole and a proposed structure of fistulosin
作者:Ronald W. Clawson、Christopher A. Dacko、Robert E. Deavers、Novruz G. Akhmedov、Björn C.G. Söderberg
DOI:10.1016/j.tet.2009.08.055
日期:2009.10
A synthetic route to 3-hydroxy-2-octadecylindole, the putative structure of the novel indole alkaloid fistulosin, starting from 2-nitro-1-iodobenzene was examined. Key steps include formation of a 1-stannyl-substituted 1-methoxy-1-alkene from a Fischer chromium carbene, intermolecular Kosugi-Migita-Stille coupling, and a palladium-catalyzed reductive N-heteroannulation. Demethylation of 3-methoxy-2-octadecylindole, a possible immediate precursor to 3-hydroxy-2-octadecylindole, was unsuccessful and gave instead methyl 2-(1-oxononadecanyl)aminobenzoate. The structure of the isolated alkaloid was suggested to be 2-(1-oxooctaclecanyl)aminobenzoate by comparison of analytical data with a synthetic sample. In addition. oxidation of 2-octadecylindole gave a 2,2'-dimer, a compound identical to previously prepared 3-hydroxy-2-octadecylindole. (c) 2009 Elsevier Ltd. All rights reserved.