Neue Cyclophosphamid-Derivate, Verfahren zu ihrer Herstellung und ihre Verwendung
申请人:Max-Planck-Gesellschaft zur Förderung
der Wissenschaften e.V.
公开号:EP0072531A1
公开(公告)日:1983-02-23
Die Erfindung betrifft neue Cyclophosphamid-Derivate der Formel I
worin R ein Wasserstoffatom, einen Kohlenwasserstoffrest oder einen heterocyclischen Rest bedeutet. Die neuen Verbindungen zeigen eine dem Cyclophosphamid vergleichbare zytostatische Wirksamkeit bei einer wesentlich geringeren Toxizität.
本发明涉及式 I 的新型环磷酰胺衍生物。
其中 R 是氢原子、烃基或杂环基。这些新化合物具有与环磷酰胺相当的细胞抑制效力,但毒性大大降低。
Synthesis and antitumor properties of activated cyclophosphamide analogs
作者:Richard F. Borch、Gregory W. Canute
DOI:10.1021/jm00114a013
日期:1991.10
A series of 5- and 6-substituted cyclophosphamide analogues has been prepared, and their P-31 NMR kinetics of phosphoramide mustard (PDA) release and in vitro and in vivo cytotoxicity have been evaluated. cis-4-Hydroxy-5-methoxycyclophosphamide equilibrated very slowly and to a minor extent with the ring-opened aldophosphamide analogues in aqueous buffer; release of PDA was observed to a minor extent and only at high (1 M) buffer concentrations. This analogue was essentially inactive in vitro against L1210 and P388 leukemia cells. 6-Phenylcyclophosphamide and its 4-hydroperoxy derivative were potent inhibitors of blood acetylcholinesterase and were lethal at therapeutic doses in mice. In contrast, 4-hydroperoxy-6-(4-pyridyl)cyclophosphamide did not inhibit acetylcholinesterase and showed significant antitumor activity in vitro and in vivo against both wild-type and cyclophosphamide-resistant L1210 leukemia. The 4-hydroperoxy-6-arylcyclophosphamides were generally active in vitro against both wild-type and cyclophosphamide-resistant L1210 and P388 cells, and several analogues showed significant activity in vivo. Surprisingly, there was no correlation between antitumor activity in vitro and the rate of PDA release in aqueous buffer. Several compounds that showed essentially no release of PDA in aqueous buffer over several hours were highly cytotoxic to leukemia cells following a 1-h exposure in vitro. These results show that activated cyclophosphamide analogues substituted at the 6-position are not cross-resistant in these leukemia cell lines, and that a specific intracellular activation mechanism may be catalyzing PDA release in these analogues.
EIBL, H.;KOLAR, C.;SEILER, F. R.;SEDLACEK, H. -H.
作者:EIBL, H.、KOLAR, C.、SEILER, F. R.、SEDLACEK, H. -H.