Probing Binding Requirements of Type I and Type II Isoforms of Inosine Monophosphate Dehydrogenase with Adenine-Modified Nicotinamide Adenine Dinucleotide Analogues
作者:Liqiang Chen、Guangyao Gao、Krzysztof Felczak、Laurent Bonnac、Steven E. Patterson、Daniel Wilson、Eric M. Bennett、Hiremagalur N. Jayaram、Lizbeth Hedstrom、Krzysztof W. Pankiewicz*
DOI:10.1021/jm070568j
日期:2007.11.1
2-ethyl TAD analogue 33 [Ki = 1 nM (type I), Ki = 14 nM (type II)] was found to be the most potent. It did not inhibit three other cellular dehydrogenases up to 50 microM. Mycophenolic adenine bis(phosphonate)s containing a 2-phenyl (37) or 2-ethyl group (38), were prepared as metabolically stable compounds, both nanomolar inhibitors. Compound 38 [Ki = 16 nM (type I), Ki = 38 nM (type II)] inhibited proliferation
已经合成了在腺嘌呤环的C 2处含有取代基的新型噻唑呋林腺嘌呤二核苷酸(TAD)类似物25-33,作为人IMP-脱氢酶的两种同工型的抑制剂。发现2-乙基TAD类似物33 [Ki = 1nM(I型),Ki = 14nM(II型)]是最有效的。它不抑制其他三种直至50 microM的细胞脱氢酶。制备含有2-苯基(37)或2-乙基(38)的霉酚腺嘌呤双(膦酸酯)作为代谢稳定的化合物,均为纳摩尔抑制剂。化合物38 [Ki = 16 nM(I型),Ki = 38 nM(II型)]比噻唑呋林(IC50 = 12.4 microM)或霉酚酸(IC50 = 7.7)更有效地抑制白血病K562细胞(IC50 = 1.1 microM)的增殖。 microM)。