Nonaqueous Biocatalytic Synthesis of New Cytotoxic Doxorubicin Derivatives: Exploiting Unexpected Differences in the Regioselectivity of Salt-Activated and Solubilized Subtilisin
作者:David H. Altreuter、Jonathan S. Dordick、Douglas S. Clark
DOI:10.1021/ja015977y
日期:2002.3.1
a salt-activated enzyme. Using AOT-SC catalysis, four unique selectively acylated DOX analogues were generated, and KCl-SC was used to prepare DOX derivatives acylated at the alternative sites. Cytotoxicities of select derivatives were evaluated against the MCF7 breast cancer cell line (DOX IC50 = 27 nM) and its multidrug-resistant sub-line, MCF7-ADR (DOX IC50 = 27 muM). The novel derivative 14-(2-thiophene