2-Azetidinone cholesterol absorption inhibitors: increased potency by substitution of the C-4 phenyl ring
作者:Wayne D. Vaccaro、Rosy Sher、Harry R. Davis
DOI:10.1016/s0968-0896(98)00073-x
日期:1998.9
SAR studies directed towards the optimization of 2-azetidinone cholesterolabsorptioninhibitors led to the discovery of 11a, the most potentcholesterolabsorptioninhibitor yet identified.
Four acid-catalysed dehydration reactions proceed without interference
作者:Rio Carlo Lirag、Ognjen Š. Miljanić
DOI:10.1039/c4cc02990a
日期:——
Four acid-catalysed dehydration reactions can proceed in one pot, simultaneously and without interference, to yield one imine, one acetal (or boronic ester), one ester and one alkene, even though many other cross-products could be conceived. This advanced self-sorting behaviour is attributed to different dehydration rates, brought about by dissimilar electronic properties of starting materials.
2-Azetidinone Cholesterol Absorption Inhibitors: Structure−Activity Relationships on the Heterocyclic Nucleus
作者:John W. Clader、Duane A. Burnett、Mary Ann Caplen、Martin S. Domalski、Sundeep Dugar、Wayne Vaccaro、Rosy Sher、Margaret E. Browne、Hongrong Zhao、Robert E. Burrier、Brian Salisbury、Harry R. Davis
DOI:10.1021/jm960405n
日期:1996.1.1
A series of azetidinone cholesterol absorption inhibitors related to SCH 48461 ((-)-6) has been prepared, and compounds were evaluated for their ability to inhibit hepatic cholesteryl ester formation in a cholesterol-fed hamster model. Although originally designed as acyl CoA: cholesterol acyltransferase (ACAT) inhibitors, comparison of in vivo potency with in vitro activity in a microsomal ACAT assay indicates no correlation between activity in these two models. The molecular mechanism by which these compounds inhibit cholesterol absorption is unknown. Despite this limitation, examination of the in vivo activity of a range of compounds has revealed clear structure-activity relationships consistent with a well-defined molecular target. The details of these structure-activity relationships and their implications on the nature of the putative pharmacophore are discussed.