Inhibitors of cholesterol biosynthesis. 1. 3,5-Dihydroxy-7-(N-imidazolyl)-6-heptenoates and -heptanoates, a novel series of 3-hydroxy-3-methylglutarate-CoA reductase inhibitors
作者:Chuen Chan、Esme J. Bailey、C. David Hartley、David F. Hayman、Julie L. Hutson、Graham G. A. Inglis、Paul S. Jones、Suzanne E. Keeling、Barrie E. Kirk
DOI:10.1021/jm00075a020
日期:1993.11
3,5-Dihydroxy-7-(N-imidazolyl)heptanoates 4 and the corresponding heptenoates 5 were synthesized as novel classes of potent HMG-CoA reductase (HMGR) inhibitors in which members of the latter series possess enzyme inhibitory activity greater than that of lovastatin 1 and pravastatin 2. Structure-activity studies show that the 7-(N-imidazolyl)heptenoates 5 are more active than the corresponding heptanoates
合成了3,5-二羟基-7-(N-咪唑基)庚酸酯4和相应的庚烯酸酯5作为新型有效的HMG-CoA还原酶(HMGR)抑制剂,其中后者系列成员的酶抑制活性大于洛伐他汀1和普伐他汀2。结构活性研究表明,7-(N-咪唑基)庚烯酸酯5比相应的庚酸酯4更具活性。对于咪唑基系列而言,在C-5处首选4-氟苯基, C-4容许宽范围的促进广泛不同的亲脂性的芳基取代基。尽管在庚酸酯系列的C-2处优选CF3基团,但是在庚烯酸酯系列中2-(1-甲基乙基)取代基是最佳的。2-(1-甲基乙基)和5-(4-氟苯基)基团可以在后面的系列中互换,如5ab所示。酶抑制活性主要存在于3R,5S系列中。庚烯酸酯系列成员的这些有效的HMGR抑制活性很好地转化为HepG2细胞中的全细胞活性。活性对映异构体28的X射线晶体学研究表明,庚烯酸酯CC双键与咪唑环不共面。该发现为庚烯酸酯系列的高酸稳定性提供了解释。