NICHOLAS, ALLAN W.;WANI, MANSUKH C.;MANIKUMAR, GOVINDARAJAN;WALL, MONROE +, J. MED. CHEM., 33,(1990) N, C. 972-978
作者:NICHOLAS, ALLAN W.、WANI, MANSUKH C.、MANIKUMAR, GOVINDARAJAN、WALL, MONROE +
DOI:——
日期:——
Plant antitumor agents. 29. Synthesis and biological activity of ring D and ring E modified analogs of camptothecin
作者:Allan W. Nicholas、Mansukh C. Wani、Govindarajan Manikumar、Monroe E. Wall、Kurt W. Kohn、Yves Pommier
DOI:10.1021/jm00165a014
日期:1990.3
activity for 3 and no activity for 4. It is evident that the pyridone ring D is essential for antitumor activity. Three E ringmodifiedanalogues of camptothecin, 2d-f, are described in which the net change is replacement of O by N in ring E. Compared to (20S)-camptothecin (1a) or (20RS)-camptothecin (1b), the ring E modifiedanalogues 2d-f display little or no cytotoxic activity, greatly reduced effect