Benzamide bioisosteres incorporating dihydroheteroazole substructures: EPC synthesis and SAR leading to a selective dopamine D4 receptor partial agonist (FAUC 179)
作者:Jürgen Einsiedel、Harald Hübner、Peter Gmeiner
DOI:10.1016/s0960-894x(01)00484-x
日期:2001.9
Conformationally restricted benzamide bioisosteres were investigated when the chiral phenyldihydroimidazole derivative 4e (FAUC 179) showed strong and highly selectivedopamineD4 receptor binding (K(i)high=0.95nM). Mitogenesis experiments indicated partial agonist properties (42%). EPC syntheses of the target compounds of type 4 were performed starting from alpha-amino acids.
Stereochemistry of the Ph3P-CCl4 mediated cyclization of carboxylic acids and 1,2-amino alcohols (Vorbruggen Method)
作者:A.I. Meyers、Denton Hoyer
DOI:10.1016/s0040-4039(00)94924-4
日期:1985.1
In contrast to a previous report,β-hydroxy amides formed the Ph3P-CCl4 condensation of acids and amino alcohols, cyclize to oxazolines with complete inversion of the carbinol center.