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  • Title: Steroidal esters of the aromatic nitrogen mustard 2-[4-N,N-bis(2-chloroethyl)amino-phenyl]butanoic acid (2-PHE-BU): synthesis and in-vivo biological evaluation.
    Author: Papaconstantinou IC, Fousteris MA, Koutsourea AI, Pairas GN, Papageorgiou AD, Nikolaropoulos SS.
    Journal: Anticancer Drugs; 2013 Jan; 24(1):52-65. PubMed ID: 23187313.
    Abstract:
    On the basis of the results of in-silico predictions and in an effort to extend our structure-activity relationship studies, the aromatic nitrogen mustard 2-[4-N,N-bis(2-chloroethyl) amino-phenyl]butanoic acid (2-PHE-BU) was synthesized and conjugated with various steroidal alcohols. The resulting steroidal esters were evaluated for their in-vivo toxicity and antileukemic activity in P388-leukemia-bearing mice. The new derivatives showed significantly reduced toxicity and marginally improved antileukemic activity compared with free 2-PHE-BU. Nevertheless, they did not prove to be superior either to the template steroidal ester used for in-silico predictions or to previously synthesized steroidal esters of aromatic nitrogen mustards. The results obtained indicate that in-silico design predictions may guide the design and synthesis of new bioactive steroidal esters, but further parameters should be considered aiming at the discovery of compounds with optimum activity.
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