Methods for making bis-heterocyclic compounds, especially bis-heterocyclic compounds having five and six-membered heterocyclic linkers are described. Also described are methods for making an alpha amino ketone synthon that enables facile syntheses of bisindole compounds, including topsentins and dragmacidins.
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A Concise Synthesis of Topsentin A and Nortopsentins B and D
作者:Fumiko Y. Miyake、Kenichi Yakushijin、David A. Horne
DOI:10.1021/ol000124g
日期:2000.7.1
[reaction: see text] A concisesynthesis of topsentin A (R(1) = R(2) = H) and nortopsentins B (R(1) = Br, R(2) = H) and D (R(1) = R(2) = H) is described from oxotryptamine 5 via reduction of acyl cyanide 4. Regiospecific bromination of 3-cyanoindole afforded 6-bromo-3-cyanoindole (10) as the major product.
The synthesis of four natural bis(indole) alkaloids of topsentin class 1 and 2 is described. Their bis(indole) α-carbonylimidazoline and subsequently bis(indole) α-carbonylimidazole moieties have been built via the condensation between indolic α-ketothioimidate salts 4 and 1-(indol-3‘-yl)-1,2-diaminoethane 3. This compound results from the β-amino indolic hydroxylamine 5 by a two-step sequence. This
Convenient access to bis-indole alkaloids. Application to the synthesis of topsentins
作者:Sajal K. Mal、Luis Bohé、Saïd Achab
DOI:10.1016/j.tet.2008.04.045
日期:2008.6
Topsentins and related bis-indole alkaloids may be efficiently synthesized through an addition/oxidation sequence leading to 2-(3-indolylcarbonyl)-imidazole derivatives followed by a Pd-catalyzed heteroarylation with the appropriate 3-stannylindoles.
[EN] BIS-INDOLE ALKALOIDS FOR USE IN THE TREATMENT OF INFECTIONS<br/>[FR] ALCALOÏDES BIS-INDOLIQUES DESTINÉS À ÊTRE UTILISÉS DANS LE TRAITEMENT D'INFECTIONS
申请人:UNIV BRITISH COLUMBIA
公开号:WO2016023106A1
公开(公告)日:2016-02-18
The present application describes bisindole alkaloids of formulas I and II and pharmaceutical compositions thereof useful in the treatment of bacterial infection such as Staphylococcus aureus (MRSA) infection: wherein X1 is: wherein X2 is: