A Cascade C-H-Functionalization/Cyclization Reaction of Indoles with α-Halo or α-Sulfonyloxy Ketones for the Synthesis of Dihydropyrimidoindolone Derivatives
作者:Zi-Jun Wu、Ya-Qiong Li、Zhi-Zhen Huang
DOI:10.1002/ejoc.201600885
日期:2016.11
A new cascade C–H-functionalization/cyclization reaction of N-carbamoylindoles 1 with α-halo, α-mesyloxy, or α-tosyloxy ketones 2 has been developed under rhodium(III) catalysis, leading to dihydropyrimido[1,6-a]indolone derivatives 3 in moderate to excellent yields.
Multicomponent Ugi Reaction of Indole-<i>N</i>-carboxylic Acids: Expeditious Access to Indole Carboxamide Amino Amides
作者:Linwei Zeng、Hironao Sajiki、Sunliang Cui
DOI:10.1021/acs.orglett.9b01871
日期:2019.7.5
A novel multicomponent Ugi-type reaction for the synthesis of indole carboxamide aminoamides from aldehydes, amines, isocyanides, and indole-N-carboxylic acids, which were simply prepared from indoles and CO2, is described. This method provides an expeditious and practical access to indole tethered peptide units, along with the achievement of remarkable structural diversity and brevity. Gram-scale
Catalytic Selective Cyclizations of Aminocyclopropanes: Formal Synthesis of Aspidospermidine and Total Synthesis of Goniomitine
作者:Filippo De Simone、Jürg Gertsch、Jérôme Waser
DOI:10.1002/anie.201001853
日期:——
Mild control: Selectivecyclization of aminocyclopropanes at either the N1 or C3 position of an indole ring was achieved by tuning the reaction conditions (see scheme). This strategy was applied to the formalsynthesis of aspidospermidine and the totalsynthesis of goniomitine, which demonstrated significant cytotoxicity against several tumor cell lines (IC50=150–400 nM). Cbz=benzyloxycarbonyl, Ts=4‐toluenesulfonyl
温和的控制:通过调节反应条件(参见方案),可实现氨基环丙烷在吲哚环的N1或C3位置的选择性环化。该策略适用于蛇毒精的正式合成和古霉素的总合成,对多种肿瘤细胞系均表现出显着的细胞毒性(IC 50 = 150–400 n M)。Cbz =苄氧羰基,Ts = 4-甲苯磺酰基
Ruthenium(II)-Catalyzed Redox-Neutral [3+2] Annulation of Indoles with Internal Alkynes via C–H Bond Activation: Accessing a Pyrroloindolone Scaffold
作者:Yanan Xie、Xiaowei Wu、Chunpu Li、Jiang Wang、Jian Li、Hong Liu
DOI:10.1021/acs.joc.7b00575
日期:2017.5.19
Ru(II)-catalyzed redox-neutral [3+2] annulation reactions of N-ethoxycarbamoyl indoles and internal alkynes via C–H bond activation are reported. This method features a broad internal alkyne scope, including various aryl/alkyl-, alkyl/alkyl-, and diaryl-substituted alkynes, good to excellent regioselectivity, diverse functional group tolerance, and mild reaction conditions. The N-ethoxycarbamoyl directing