New series of potent δ-opioid antagonists containing the H-Dmt-Tic-NH-hexyl-NH-R motif
摘要:
Heterodimeric compounds H-Dmt-Tic-NH-hexyl-NH-R (R = Dmt, Tic, and Phe) exhibited high affinity to delta-(K-i delta = 0.13-0.89 nM) and p-opioid receptors (K-i mu = 0.38-2.81 nM) with extraordinary potent delta antagonism (pA(2) = 10.2-10.4). These compounds represent the prototype for a new class of structural homologues lacking mu-opioid receptor-associated agonism IC50 = 1.6-5.8 mu M) based on the framework of bis-[H-Dmt-NH]-alkyl (Okada, Y.; Tsuda, Y.; Fujita, Y.; YDkoi, T.; Sasaki, Y.; Ambo, A.; Konishi, R.; Nagata, M.; Salvadori, S.; Jinsmaa, Y.; Bryant, S. D.; Lazarus, L. H. J. Med. Chem. 2003, 46, 3201), which exhibited both high p affinity and bioactivity. (c) 2005 Elsevier Ltd. All rights reserved.
Efficient monoacylation of symmetrical secondary alkanediamines and synthesis of unsymmetrical diacylated alkanediamines. A new L-proline-based organocatalyst
作者:Laure Moulat、Jean Martinez、Xavier J. Salom-Roig
DOI:10.24820/ark.5550190.p011.054
日期:——
developed for the monoacylation of several unprotected alkanediamines with carboxylic acids by using PyBOP-HOBt as coupling agent in the presence of DIEA at room temperature. Yields were moderate with primary alkanediamines and good to excellent with linear or cyclic secondary ones. To illustrate the utility of these monoacylated products, six unsymmetricaldiacylatedalkanediamines were synthesized