Synthesis and Evaluation of New Endomorphin-2 Analogues Containing (<i>Z</i>)-α,β-Didehydrophenylalanine (Δ<sup>Z</sup>Phe) Residues
作者:Domenica Torino、Adriano Mollica、Francesco Pinnen、Federica Feliciani、Gino Lucente、Giancarlo Fabrizi、Gustavo Portalone、Peg Davis、Josephine Lai、Shou-Wu Ma、Frank Porreca、Victor J. Hruby
DOI:10.1021/jm1001343
日期:2010.6.10
New endomorphin-2 (EM-2) analogues incorporating (Z)-α,β-didehydrophenylalanine (ΔZPhe) in place of the native phenylalanine in EM-2 are reported. Tyr-Pro-ΔZPhe-Phe-NH2 [ΔZPhe3]EM-2} (1), Tyr-Pro-Phe-ΔZPhe-NH2 [ΔZPhe4]EM-2} (2), and Tyr-Pro-ΔZPhe-ΔZPhe-NH2 [ΔZPhe3,4]EM-2}(3) have been synthesized, their opioid receptor binding affinities and tissue bioassay activities were determined, and their
新的内吗啡肽-2 (EM-2) 类似物包含 ( Z )-α,β-二脱氢苯丙氨酸( ΔZ Phe) 代替 EM-2 中的天然苯丙氨酸。Tyr-Pro-Δ Z Phe-Phe-NH 2 [Δ Z Phe 3 ]EM-2} ( 1 )、Tyr-Pro-Phe-Δ Z Phe-NH 2 [Δ Z Phe 4 ]EM-2} ( 2 ) 和 Tyr-Pro-Δ Z Phe-Δ Z Phe-NH 2 [Δ Z Phe 3,4 ]EM-2}( 3) 已经合成,它们的阿片受体结合亲和力和组织生物测定活性被确定,并且它们的构象特性被检查。化合物2显示出与天然肽相当的高 μ 阿片受体选择性和 μ 激动剂活性。报道了N -Boc-Tyr-Pro- ΔZ Phe-Phe-NH 2 ( 8 )在溶液和晶体中采用的构象。