Nle-Asp(OBzl)-Phe-NH2 TFA salt | 107326-87-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: Nle-Asp(OBzl)-Phe-NH2 TFA salt
• 英文别名: H-Nle-Asp(OBzl)-Phe-NH2*TFA；Nle-Asp(OBzl)-Phe-NH2*TFA；benzyl (3S)-3-[[(2S)-2-aminohexanoyl]amino]-4-[[(2S)-1-amino-1-oxo-3-phenylpropan-2-yl]amino]-4-oxobutanoate;2,2,2-trifluoroacetic acid
• CAS: 107326-87-4
• 化学式: C₂HF₃O₂*C₂₆H₃₄N₄O₅
• 分子量: 596.604
• InChiKey: OGKGVZAMUGWYBT-SGIIKHNDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.97
• 重原子数：
  42.0
• 可旋转键数：
  14.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.39
• 拓扑面积：
  190.91
• 氢给体数：
  5.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  Boc-3-(2-萘基)-L-丙氨酸 、 Nle-Asp(OBzl)-Phe-NH2 TFA salt 在 N-甲基吗啉 、 (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 1.0h， 生成 benzyl (3S)-4-[[(2S)-1-amino-1-oxo-3-phenylpropan-2-yl]amino]-3-[[(2S)-2-[[(2S)-2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-naphthalen-2-ylpropanoyl]amino]hexanoyl]amino]-4-oxobutanoate
  参考文献：
  名称：

  Synthesis and biological activities of cholecystokinin analogues substituted in position 30 by 3-(1-naphthyl)-l-alanine [Nal(1)] or 3-(2-naphthyl)-l-alanine [Nal(2)]

  摘要：

  Acetyl derivatives of ethyl esters of 3-(1-naphthyl)-D,L-alanine and 3-(2-naphthyl)-D,L-alanine were synthesized through a malonic condensation. Resolution of these derivatives by subtilisin Carlsberg followed by acid hydrolysis afforded the 2 optical isomers of 3-(1-naphthyl)-alanine [Nal(1)] and 3-(2-naphthyl)-alanine [Nal(2)]. The L enantiomers of these amino acids were incorporated into the sequence of cholecystokinin in place of the tryptophan in position 30. The cholecystokinin analogues thus obtained behaved as full agonists, with reduced potencies on rat pancreatic acini and on guinea pig brain membranes, by about one order of magnitude for the Nal(2) derivative and by 2 orders of magnitude for the Nal(1) derivative, as compared to the potent parent compound Boc-Tyr(SO3H)-Nle-Gly-Trp-Nle-Asp-Phe-NH2.

  DOI：

  10.1016/0223-5234(91)90056-s
• 作为产物：
  描述：

  Boc-Nle-Asp(OBzl)-Phe-NH2 在 三氟乙酸 作用下， 反应 2.0h， 生成 Nle-Asp(OBzl)-Phe-NH2 TFA salt
  参考文献：
  名称：

  CCK-B agonist or antagonist activities of structurally hindered and peptidase-resistant Boc-CCK4 derivatives

  摘要：

  Replacement of Met31 by (N-Me)Nle in CCK8 or CCK4 has been shown to improve the affinity and selectivity for CCK-B receptors. In order to obtain molecules with enhanced bioavailability, two novel series of protected tetrapeptides of the general formula Boc-Trp30-X-Asp-Y33 have been developed. Introduction of (N-Me)Nle and the bulky, aromatic naphthylalaninamide (Nal-NH2) in positions X and Y, respectively, does not greatly modify the affinity for guinea pig brain CCK-B receptors. In contrast, incorporation of hindering N-methyl amino acids such as (N-Me)Phe, (N-Me)Phg, or (N-Me)Chg, but not their non-methylated counterparts, in position X induced a large decrease in affinity for the CCK-B binding sites. Among the various peptides synthesized, Boc-[(N-Me)Nle31,1Nal-NH233]CCK4 (2) (K(I) = 2.8 nM), Boc-[Phg31,1Nal-NH233]CCK4 (15) (K(I) = 14 nM), and Boc-[Phg31,1Nal-N(CH3)233]CCK4 (17) (K(I) = 39 nM) displayed good affinities for brain CCK-B receptors and had good selectivity ratios. These pseudopeptides, in which the presence of unnatural and hydrophobic residues is expected to improve their penetration of the central nervous system, were shown to be very resistant to brain peptidases. Interestingly, whereas compounds 2 and 15 proved to be full agonists for rat hippocampal CCK-B receptors when measured in an electrophysiological assay, compound 17 behaved as a potent antagonist in the same test and displayed a good affinity in rat brain K(I)(CCK-B) = 51 nM as compared to the Merck antagonist L365,260, K(I)(CCK-B) = 12 nM. This illustrates a simple means to obtain CCK-B antagonists and suggests that the free, CONH2 group plays a critical role in the recognition of the agonist date of brain CCK-B receptors.

  DOI：

  10.1021/jm00053a022

文献信息

• Investigation of peripheral cholecystokinin receptor heterogeneity by cyclic and related linear analogs of CCK26-33. Synthesis and biological properties
  作者：Bruno Charpentier、Christiane Durieux、Isabelle Menant、Bernard P. Roques

  DOI：10.1021/jm00389a002

  日期：1987.6

  by a D-Lys residue in Boc[Nle28,31]CCK27-33, a derivative as active as CCK8. The linear peptide Boc-Asp-Tyr(SO3H)-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2 was cyclized through amide bond formation between the side chains of Asp26 and D-Lys29 to give the peptide Boc-Asp-Tyr(SO3H)-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2. Analogues 1 and 2 were shown to stimulate secretion of amylase from rat pancreas with a potency that

  通过替换柔性Gly29残基，研究了CCK26-33 [Asp-Tyr（SO3H）-Met-Gly-Trp-Met-Asp-Phe-NH2]（CCK8）周围受体的可能异质性在CCK8折叠中，通过Boc [Nle28，31] CCK27-33中的D-Lys残基，具有与CCK8同样活性的衍生物。线性肽Boc-Asp-Tyr（SO3H）-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2通过Asp26和D-Lys29侧链之间的酰胺键形成环化，得到肽Boc-Asp -Tyr（SO3H）-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2。已显示类似物1和2刺激大鼠胰腺淀粉酶的分泌，其效力分别比CCK8低40和80倍。相反，两种肽均作为CCK8诱导的豚鼠回肠收缩的弱拮抗剂（EC50约为10（-5）M）。尽管它们的C末端Asp32残基发生酰胺化，但从1和2中除去苯丙氨酸获得的肽3和4在所
• Synthesis and binding affinities of cyclic and related linear analogs of CCK8 selective for central receptors
  作者：Bruno Charpentier、Adeline Dor、Pierre Roy、Patrick England、Pham Hung、Christiane Durieux、Bernard P. Roques

  DOI：10.1021/jm00126a007

  日期：1989.6

  To investigate the role of the sulfate group and the influence of cyclization on the biological properties of conformationally constrained CCK8 analogues, three series of compounds were synthesized: Boc-Glu-Tyr-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2 (1), Boc-Glu-Tyr(SO3H)-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2 (2), and Boc-Glu-Tyr-(SO3H)-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2 (3) (series A); Boc-D-Glu-Tyr-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2 (4), Boc-D-Glu-Tyr(SO3H)-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2 (5), Boc-D-Glu-Tyr(SO3H)-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2 (6), and Boc-D-Glu-Tyr(SO3H)-Nle-D-Nle-Trp-Asp-Phe-NH2 (7) (series B); and Boc-gamma-D-Glu-Tyr-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2 (8), Boc-gamma-D-Glu-Tyr(SO3H)-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2 (9), and Boc-gamma-D-Glu-Tyr-(SO3H)-Nle-D-Lys-Trp-Nle-Asp-Phe-NH2 (10) (series C). The selectivity of these peptides was studied by measuring their ability to displace [3H]propionyl-CCK8 from guinea pig brain and pancreatic membranes. All the peptides displayed low affinities (KI values around 10(-6) M) for the pancreatic receptors (A type). In contrast, both sulfated and nonsulfated cyclic analogues displayed high affinities for central-type binding sites (B type), especially compounds belonging to series C [KI(8) = 4.7 nM and KI(9) = 0.56 nM]. In all series the linear analogues had relatively poor affinities (KI approximately 300 nM) for B-type receptors. Compound 9 was the most potent (KI = 0.56 nM) and selective [KI(pancreas)/KI(brain) = 4464] for central-type CCK receptors of guinea pig. The cyclization of the N-terminal region of CCK8 permits one therefore to obtain probes for central receptors, and small changes directed toward the cyclic part modulate the affinity for these receptors.
• Full agonists of CCK8 containing a nonhydrolyzable sulfated tyrosine residue
  作者：I. Marseigne、P. Roy、A. Dor、C. Durieux、D. Pelaprat、M. Reibaud、J. C. Blanchard、B. P. Roques

  DOI：10.1021/jm00122a026

  日期：1989.2

  The sulfate ester of CCK26-33 or CCK8 (Asp-Tyr(SO3H)-Met-Gly-Trp-Met-Asp-Phe-NH2) borne by the tyrosine residue is a critical determinant of the biological activity of this peptide. In order to increase the stability of this molecule, the sulfated tyrosine has been replaced by a synthetic amino acid (L,D)Phe(p-CH2SO3Na) in which the OSO3H group was replaced by the nonhydrolyzable CH2SO3H group. Both isomers were separated by chromatography and the stereochemistry of the Phe(p-CH2SO3Na) residue in each peptide was established by NMR spectroscopy. The biological activities of the new derivatives Ac[X27, Nle28,Nle31]CCK27-33 were compared with those of Boc[Nle28,Nle31]CCK27-33, an equiactive analogue of CCK8 and Boc[D-Tyr(SO3Na)27,Nle28,Nle31]CCK27-33. Besides their highly enhanced chemical stability, Ac[L-Phe(p-CH2SO3Na)27,Nle28,Nle31]CCK27-33 and Ac[D-Phe(p-CH2SO3Na)27,Nle28,Nle31]CCK27-33 display high affinity for peripheral and central CCK receptors (KI congruent to 10(-9) M) and proved to be full agonists in the stimulation of pancreatic secretion as well as in the in vitro CCK8-induced contractions of the guinea pig ileum.
• CHARPENTIER, BRUNO;ROQUES, BERNARD PIERRE
  作者：CHARPENTIER, BRUNO、ROQUES, BERNARD PIERRE

  DOI：——

  日期：——
• CHARPENTIER, B.;DOR, A.;ROY, P.;ENGLAND, P.;PHAM, H.;DURIEUX, C., J. MED. CHEM., 32,(1989) N, C. 1184-1190
  作者：CHARPENTIER, B.、DOR, A.、ROY, P.、ENGLAND, P.、PHAM, H.、DURIEUX, C.

  DOI：——

  日期：——