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Total synthesis of dictyodendrins B and E. 2013

Jingjing Liang, and Weimin Hu, and Pengyu Tao, and Yanxing Jia
State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China.

The concise synthesis of the novel telomerase inhibitors dictyodendrins B and E was completed in only 9 and 11 steps (longest linear sequence). The highly convergent strategy employed a palladium-catalyzed Larock indole synthesis and a palladium-mediated one-pot consecutive Buchwald-Hartwig amination/C-H activation reaction as key steps. The present synthesis exhibits respectable levels of atom-, redox-, and step-economy.

UI MeSH Term Description Entries
D011758 Pyrroles Azoles of one NITROGEN and two double bonds that have aromatic chemical properties. Pyrrole
D002227 Carbazoles Benzo-indoles similar to CARBOLINES which are pyrido-indoles. In plants, carbazoles are derived from indole and form some of the INDOLE ALKALOIDS.
D013237 Stereoisomerism The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) Molecular Stereochemistry,Stereoisomers,Stereochemistry, Molecular,Stereoisomer
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular
D019098 Telomerase An essential ribonucleoprotein reverse transcriptase that adds telomeric DNA to the ends of eukaryotic CHROMOSOMES. Telomerase Catalytic Subunit,Telomerase Reverse Transcriptase,Telomerase Reverse Transcriptase Catalytic Subunit,Catalytic Subunit, Telomerase,Reverse Transcriptase, Telomerase,Subunit, Telomerase Catalytic,Transcriptase, Telomerase Reverse

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