作者:P Jakobsen
DOI:10.1016/s0223-5234(03)00041-2
日期:2003.4
Synthesis of a series of imidazolines with glucose dependent effects on insulin exocytosis from pancreatic P-cells is reported. Regioisomers and enantionters were found to exhibit marked differences in exocytotic effects as well as different activities on the K-ATP-channel- the (R (+)) isomer of 2-[2-(4,5-dihydro-1H-imidazol-2-yl)-1-thiophene-2-ylethyl]pyridine (4a) and the (+) isomer of 2-[2-(4,5-dihydro-1H-imidazol-2-yl)-1-thiophene-3-yiethyl]pyridine (4d) were found to give a significant increase in insulin release in contrast to Findings for their enantiomers-without influence on the K-ATP-channel. The (+) isomer (4a) showed glucose dependent insulin release from P-cells at concentrations above 2.5 mM and a marked glucose lowering effect in ob/ob mice as well as in fed but not in fasted rats. (C) 2003 Editions scientifiques et medicales Elsevier SAS. All rights reserved.