Cytotoxic activities of novel hexahydroindolizino[8,7-b]indole derivatives prepared by 1,3-dipolar cycloaddition reactions of 3,4-dihydro-β-carboline ylides
A series of 1-cyano and 2-cyanohexahydroindolizino[8,7-b]indole derivatives was prepared by 1,3-dipolar cycloaddition of acrylonitrile with ylides derived from 3,4-dihydro-β-carboline and its 6-methoxy, 6-benzyloxy, 9-methyl and 9-benzyl analogues. The products, together with their reduced 1- or 2-a...
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Published in | Bioorganic & medicinal chemistry Vol. 9; no. 8; pp. 2155 - 2164 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
01.08.2001
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | A series of 1-cyano and 2-cyanohexahydroindolizino[8,7-b]indole derivatives was prepared by 1,3-dipolar cycloaddition of acrylonitrile with ylides derived from 3,4-dihydro-β-carboline and its 6-methoxy, 6-benzyloxy, 9-methyl and 9-benzyl analogues. The products, together with their reduced 1- or 2-aminomethyl derivatives, were evaluated for cytotoxic activity in L1210 cancer cells. Compounds derived from 6-benzyloxy or 9-benzyl-3,4-dihydro-β-carboline were found to be the most active, with IC
50's in the 2–50 μM range. Of these, two compounds, the 1- and 2-cyano 8-benzyloxyindolizino[8,7-b]indole derivatives
20a and
20c, respectively, were found by cytometric flux analysis to stop cancer cell growth at the G
2M and 8N (>G
2M) stage of the cell cycle. These two compounds also showed no loss of cytotoxic activity in K562R cancer cells resistant to doxorubicin.
The title compounds were synthesized and their cytotoxic properties toward L1210 cancer cells were evaluated in vitro. Compounds
20a and
20c displayed IC
50's in the 15 μM range and were found to stop cancer cell growth at the G2M and 8N stage of the cell cycle. These compounds were also active in a mutidrug resistance cancer cell line. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0968-0896 1464-3391 |
DOI: | 10.1016/S0968-0896(01)00119-5 |