Amino Acids and Peptides. LII. Design and Synthesis of Opioid Mimetics Containing a Pyrazinone Ring and Examination of Their Opioid Receptor Binding Activity.
Amino Acids and Peptides. LII. Design and Synthesis of Opioid Mimetics Containing a Pyrazinone Ring and Examination of Their Opioid Receptor Binding Activity.
Amino Acids and Peptides. LII. Design and Synthesis of Opioid Mimetics Containing a Pyrazinone Ring and Examination of Their Opioid Receptor Binding Activity.
作者:Yoshio OKADA、Masaki TSUKATANI、Hiroaki TAGUCHI、Toshio YOKOI、Sharon D. BRYANT、Lawrence H. LAZARUS
DOI:10.1248/cpb.46.1374
日期:——
An amino group was introduced to the 3 or 6 position of a pyrazinone ring by cyclization of dipeptidyl chloromethyl ketones. Boc-Tyr-OH was coupled with the amino funciton, followed by removal of the Boc group to give pyrazinone ring-containing tyrosine derivatives. Of the various tyrosine derivatives prepared, 5-methyl-6-β-phenethyl-3-tyrosylaminobutyl-2(1H)-pyrazinone exhibited strong binding to the μ-opioid receptor with a Ki value of 55.8 nM and to the δ-opioid receptor with a Ki value of 2165 nM and with a Kiμ/Kiδ value of 0.026.