Role of 2',6'-dimethyl-l-tyrosine (Dmt) in some opioid lead compounds.

Role of 2',6'-dimethyl-l-tyrosine (Dmt) in some opioid lead compounds.
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DOI:
10.1016/j.bmc.2010.06.073
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发表时间:
2010-08-15
影响因子:
3.5
通讯作者:
Salvadori, Severo
Salvadori, Severo
中科院分区:
医学3区
文献类型:
--
作者:
Balboni, Gianfranco;Marzola, Erika;Sasaki, Yusuke;Ambo, Akihiro;Marczak, Ewa D.;Lazarus, Lawrence H.;Salvadori, Severo

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在这里,我们评估了氨基酸2′,6 ′-二甲基-L-酪氨酸(Dmt),2′,6 ′-二氟-L-酪氨酸(Dft)和酪氨酸在位置1的互换如何影响一些参考阿片肽和假肽的药理学特性。通常,Dft和Tyr提供具有相似药理学特征的类似物,尽管pKa值不同。Dmt/Tyr(Dft)替代产生活性变化,这取决于其中进行修饰的参比阿片样物质。而H-Dmt-Tic-Asp*-Bid是一种有效的选择性δ激动剂(MVD,IC 50 = 0.12 nM); H-Dft-Tic-Asp*-Bid和H-Tyr-Tic-Asp*-Bid是有效的选择性δ拮抗剂(pA 2分别= 8.95和8.85)。当这些氨基酸用于合成Deltorphin B及其Dmt 1和Dft 1类似物时,这三种化合物保持非常相似的δ激动作用(MVD,IC 50 0.32-0.53 nM),相对于Dmt 1类似物,选择性降低。在选择性较低的H-Dmt-Tic-Gly*-Bid中,用Dft和Tyr替换Dmt保留δ激动作用,但效力降低。含有Dmt-Tic药效团的拮抗剂不支持Dmt与Dft或Tyr的交换。
Here we evaluated how the interchange of the amino acids 2′,6′-dimethyl-L-tyrosine (Dmt), 2′,6′-difluoro-L-tyrosine (Dft), and tyrosine in position 1 can affect the pharmacological characterization of some reference opioid peptides and pseudopeptides. Generally, Dft and Tyr provide analogues with a similar pharmacological profile, despite different pKa values. Dmt/Tyr(Dft) replacement gives activity changes depending on the reference opioid in which the modification was made. Whereas, H-Dmt-Tic-Asp*-Bid is a potent and selective δ agonist (MVD, IC50 = 0.12 nM); H-Dft-Tic-Asp*-Bid and H-Tyr-Tic-Asp*-Bid are potent and selective δ antagonists (pA2 = 8.95 and 8.85, respectively). When these amino acids are employed in the synthesis of deltorphin B and its Dmt1 and Dft1 analogues, the three compounds maintain a very similar δ agonism (MVD, IC50 0.32–0.53 nM) with a decrease in selectivity relative to the Dmt1 analogue. In the less selective H-Dmt-Tic-Gly*-Bid the replacement of Dmt with Dft and Tyr retains the δ agonism but with a decrease in potency. Antagonists containing the Dmt-Tic pharmacophore do not support the exchange of Dmt with Dft or Tyr.
含有 Dmt-Tic 阿片药效团的双功能先导 μ 激动剂/δ 拮抗剂的演变。
DOI: 10.1021/cn900025j
发表时间: 2010-02-17
影响因子: 5
作者:
Balboni, Gianfranco;Salvadori, Severo;Trapella, Claudio;Knapp, Brian I.;Bidlack, Jean M.;Lazarus, Lawrence H.;Peng, Xuemei;Neumeyer, John L.
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发表时间: 2002-12-05
影响因子: 7.3
作者:
Balboni, G;Salvadori, S;Lazarus, LH
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发表时间: 2002-01-31
影响因子: 7.3
作者:
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DOI: 10.1021/jm9004913
发表时间: 2009-11-12
影响因子: 7.3
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DOI: 10.1021/jm900686q
发表时间: 2009-09-10
影响因子: 7.3
作者:
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