Construction of Oxepino[3,2‐b]indoles via [4+3] Annulation of 2‐Ylideneoxindoles with Crotonate‐Derived Sulfur Ylides
A [4+3] annulation of 2‐ylideneoxindoles with crotonate‐derived sulfur ylides has been developed. A series of oxepino[3,2‐b]indoles were prepared in moderate to excellent yields (62‐93%) under mild conditions. Moreover, the synthetic oxepino[3,2‐b] indoles can be further transformed into more comple...
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Published in | Advanced synthesis & catalysis Vol. 363; no. 12; pp. 3018 - 3024 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
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WEINHEIM
Wiley
21.06.2021
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Abstract | A [4+3] annulation of 2‐ylideneoxindoles with crotonate‐derived sulfur ylides has been developed. A series of oxepino[3,2‐b]indoles were prepared in moderate to excellent yields (62‐93%) under mild conditions. Moreover, the synthetic oxepino[3,2‐b] indoles can be further transformed into more complex cyclopropa[5,6]oxepino[3,2‐b]indoles via a [2+1] cyclopropanation. In addition, the synthetic compounds show certain antiproliferative activity against K562 and MCF‐7 cells, and its IC50 values for these two kinds of tumor cells up to 5.40±0.88 μM and 18.41±0.50 μM, respectively. |
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AbstractList | A [4+3] annulation of 2-ylideneoxindoles with crotonate-derived sulfur ylides has been developed. A series of oxepino[3,2-b]indoles were prepared in moderate to excellent yields (62-93%) under mild conditions. Moreover, the synthetic oxepino[3,2-b] indoles can be further transformed into more complex cyclopropa[5,6]oxepino[3,2-b]indoles via a [2+1] cyclopropanation. In addition, the synthetic compounds show certain antiproliferative activity against K562 and MCF-7 cells, and its IC50 values for these two kinds of tumor cells up to 5.40 +/- 0.88 mu M and 18.41 +/- 0.50 mu M, respectively. A [4+3] annulation of 2‐ylideneoxindoles with crotonate‐derived sulfur ylides has been developed. A series of oxepino[3,2‐ b ]indoles were prepared in moderate to excellent yields (62‐93%) under mild conditions. Moreover, the synthetic oxepino[3,2‐ b ] indoles can be further transformed into more complex cyclopropa[5,6]oxepino[3,2‐ b ]indoles via a [2+1] cyclopropanation. In addition, the synthetic compounds show certain antiproliferative activity against K562 and MCF‐7 cells, and its IC 50 values for these two kinds of tumor cells up to 5.40±0.88 μM and 18.41±0.50 μM, respectively. magnified image A [4+3] annulation of 2‐ylideneoxindoles with crotonate‐derived sulfur ylides has been developed. A series of oxepino[3,2‐b]indoles were prepared in moderate to excellent yields (62‐93%) under mild conditions. Moreover, the synthetic oxepino[3,2‐b] indoles can be further transformed into more complex cyclopropa[5,6]oxepino[3,2‐b]indoles via a [2+1] cyclopropanation. In addition, the synthetic compounds show certain antiproliferative activity against K562 and MCF‐7 cells, and its IC50 values for these two kinds of tumor cells up to 5.40±0.88 μM and 18.41±0.50 μM, respectively. |
Author | He, Bin Zhao, Yong‐Long Yang, Yuan‐Yong Fei, Xing‐Hai Wang, Da‐Peng Guan, Xiang Zhou, Meng Yang, Fen‐Fen Li, Zong‐Qin |
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Keywords | DOMINO REACTION 2-ylideneoxindoles oxepino[3,2-b]indoles MICHAEL ADDITION BETA-NUCLEOPHILIC SUBSTITUTION BENZANNULATION INHIBITION DIASTEREOSELECTIVE SYNTHESIS INDOLE [4+3] annulation CYCLIZATION REACTIONS STEREOSELECTIVE-SYNTHESIS sulfur ylides |
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Snippet | A [4+3] annulation of 2‐ylideneoxindoles with crotonate‐derived sulfur ylides has been developed. A series of oxepino[3,2‐b]indoles were prepared in moderate... A [4+3] annulation of 2‐ylideneoxindoles with crotonate‐derived sulfur ylides has been developed. A series of oxepino[3,2‐ b ]indoles were prepared in moderate... A [4+3] annulation of 2-ylideneoxindoles with crotonate-derived sulfur ylides has been developed. A series of oxepino[3,2-b]indoles were prepared in moderate... |
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SubjectTerms | 2-ylideneoxindoles [4+3] annulation Chemistry Chemistry, Applied Chemistry, Organic oxepino[3,2-b]indoles Physical Sciences Science & Technology sulfur ylides |
Title | Construction of Oxepino[3,2‐b]indoles via [4+3] Annulation of 2‐Ylideneoxindoles with Crotonate‐Derived Sulfur Ylides |
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