The intramolecularcyclization of 2‐alkynylanilines mediated by DMSO/SOCl2 was found to afford biologically interesting 3‐methylthioindoles, which are rarely obtained by the exiting methods. DMSO could also be replaced with its deuterated counterpart, enabling the method applicable to the construction of indole skeleton bearing a SCD3 moiety at its 3‐position.
Synthesis of Dihydroindolo[2,3-<i>c</i>]carbazole as Potential Telomerase Inhibitor
作者:Yendry Carvajal-Miranda、Roy Pérez-Salazar、Jesús A. Varela
DOI:10.1002/jhet.2333
日期:2016.5
The dictyodendrins A–E were the first marine natural products that show inhibition of telomerase. A versatile and convergent route was described for the synthesis of derivatives of these pyrrolo[2,3‐c]carbazole alkaloids as potentialinhibitors of telomerase, by cyclotrimerization [2 + 2 + 2] of ruthenium‐catalyzed diynamides diarylacetylenes.
dictyodendrins A–E是最早显示出端粒酶抑制作用的海洋天然产物。通过钌催化的二炔酰胺二芳基乙炔的环三聚化[2 + 2 + 2],描述了一种通用且收敛的途径来合成这些吡咯并[2,3- c ]咔唑生物碱的衍生物,作为端粒酶的潜在抑制剂。
Cu(OAc)<sub>2</sub>-Mediated Cascade Annulation of Diarylalkyne Sulfonamides through Dual C–N Bond Formation: Synthesis of 5,10-Dihydroindolo[3,2-<i>b</i>]indoles
作者:Junchao Yu、Daisy Zhang-Negrerie、Yunfei Du
DOI:10.1021/acs.orglett.6b01343
日期:2016.7.15
An unusual cascade reaction featuring annulation of diarylalkyne sulfonamides to form 5,10-dihydroindolo[3,2-b]indoles has been realized with Cu(OAc)(2) as the sole oxidant. This unprecedented process encompasses two sequential C-N bond formations, allowing for an efficient synthesis of the biologically important indoloindole derivatives.