Unique High-Affinity Synthetic μ-Opioid Receptor Agonists with Central- and Systemic-Mediated Analgesia
摘要:
Unique opioid mimetic substances containing identical N-terminal aromatic residues separated by an unbranched alkyl chain containing two to eight methylene groups were developed. Regardless of the length of interposing alkyl chain, the bis-Tyr and bis-Phe compounds were inactive; however, replacement by a single Dint (2',6'-dimethyl-L-tyrosine) residue enhanced activity by orders of magnitude. Moreover, the bis-Dmt compounds were another 10-fold more potent with an optimum intra-aromatic ring distance of about four to six methylene units. 1,4-Bis(Dmt-NH)butane (7) had high mu-opioid receptor affinity (K-i = 0.041 nM) and functional mu-opioid agonist bioactivity (IC50 = 5.3 nM) with in vivo central (intracerebroventricular) and systemic (subcutaneous) analgesia in mice (1.5- to 2.5-fold greater than and 10-12% relative to morphine, respectively); these activities were reversed by naloxone to the same degree. It appears that the bis-Dmt compounds indiscriminately act as both message and address domains.
Unique High-Affinity Synthetic μ-Opioid Receptor Agonists with Central- and Systemic-Mediated Analgesia
摘要:
Unique opioid mimetic substances containing identical N-terminal aromatic residues separated by an unbranched alkyl chain containing two to eight methylene groups were developed. Regardless of the length of interposing alkyl chain, the bis-Tyr and bis-Phe compounds were inactive; however, replacement by a single Dint (2',6'-dimethyl-L-tyrosine) residue enhanced activity by orders of magnitude. Moreover, the bis-Dmt compounds were another 10-fold more potent with an optimum intra-aromatic ring distance of about four to six methylene units. 1,4-Bis(Dmt-NH)butane (7) had high mu-opioid receptor affinity (K-i = 0.041 nM) and functional mu-opioid agonist bioactivity (IC50 = 5.3 nM) with in vivo central (intracerebroventricular) and systemic (subcutaneous) analgesia in mice (1.5- to 2.5-fold greater than and 10-12% relative to morphine, respectively); these activities were reversed by naloxone to the same degree. It appears that the bis-Dmt compounds indiscriminately act as both message and address domains.
1. A peptide derivative represented by the following formula (1) or a salt thereof;
1
, wherein R
1
is hydrogen atom or methyl group, R
2
is hydrogen atom or hydroxy group and n is an integer of 1-8, provided that R
1
is hydrogen atom when R
2
is hydrogen atom, which has specific and high binding affinity with the &mgr;-opioid receptor.
1.下式(1)所代表的多肽衍生物或其盐;
1
其中 R
1
是氢原子或甲基,R
2
是氢原子或羟基,n 是 1-8 的整数,条件是 R
1
为氢原子时,R
2
为氢原子时,R 1 为氢原子,它与 &mgr;-阿片受体具有特异性和高结合亲和力。
NEW OPIOID DERIVATIVE
申请人:TEIKOKU SEIYAKU CO., LTD.
公开号:EP1470101B1
公开(公告)日:2010-09-29
US6838580B2
申请人:——
公开号:US6838580B2
公开(公告)日:2005-01-04
Unique High-Affinity Synthetic μ-Opioid Receptor Agonists with Central- and Systemic-Mediated Analgesia
作者:Yoshio Okada、Yuko Tsuda、Yoshio Fujita、Toshio Yokoi、Yusuke Sasaki、Akihiro Ambo、Ryoji Konishi、Mitsuhiro Nagata、Severo Salvadori、Yunden Jinsmaa、Sharon D. Bryant、Lawrence H. Lazarus
DOI:10.1021/jm020459z
日期:2003.7.1
Unique opioid mimetic substances containing identical N-terminal aromatic residues separated by an unbranched alkyl chain containing two to eight methylene groups were developed. Regardless of the length of interposing alkyl chain, the bis-Tyr and bis-Phe compounds were inactive; however, replacement by a single Dint (2',6'-dimethyl-L-tyrosine) residue enhanced activity by orders of magnitude. Moreover, the bis-Dmt compounds were another 10-fold more potent with an optimum intra-aromatic ring distance of about four to six methylene units. 1,4-Bis(Dmt-NH)butane (7) had high mu-opioid receptor affinity (K-i = 0.041 nM) and functional mu-opioid agonist bioactivity (IC50 = 5.3 nM) with in vivo central (intracerebroventricular) and systemic (subcutaneous) analgesia in mice (1.5- to 2.5-fold greater than and 10-12% relative to morphine, respectively); these activities were reversed by naloxone to the same degree. It appears that the bis-Dmt compounds indiscriminately act as both message and address domains.