Novel Melphalan and Chlorambucil Derivatives of 2,2,6,6-Tetramethyl-1-piperidinyloxy Radicals: Synthesis, Characterization, and Biological Evaluation <i>in Vitro</i>
作者:Hongli Zhao、Xianjiang Meng、Huihui Yuan、Minbo Lan
DOI:10.1248/cpb.58.332
日期:——
A series of spin-labeled melphalan and chlorambucil derivatives, coupling the alkylating agents with 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) radicals, were synthesized, characterized, and their biological properties in vitro were evaluated. These compounds showed much higher cytotoxic activity against human leukemia cell line K562 in vitro than their parent compounds.
Drug binding to humanserumalbumin (HSA) has been characterized by a spin‐labeling and continuous‐wave (CW) EPR spectroscopic approach. Specifically, the contribution of functional groups (FGs) in a compound on its albumin‐binding capabilities is quantitatively described. Molecules from different drug classes are labeled with EPR‐active nitroxide radicals (spin‐labeled pharmaceuticals (SLPs)) and