An investigation into the structure–activity relationships associated with the systematic modification of the β2-adrenoceptor agonist indacaterol
作者:David Beattie、David Beer、Michelle E. Bradley、Ian Bruce、Steven J. Charlton、Bernard M. Cuenoud、Robin A. Fairhurst、David Farr、John R. Fozard、Diana Janus、Elizabeth M. Rosethorne、David A. Sandham、David A. Sykes、Alexandre Trifilieff、Katharine L. Turner、Elke Wissler
DOI:10.1016/j.bmcl.2012.07.096
日期:2012.10
The synthesis of a series of indacaterol analogues in which each of the three structural regions of indacaterol are modified in a systematic manner is described. Evaluation of the affinity of these analogues for the beta(2)-adrenoceptor identified the 3,4-dihydroquinolinone and 5-n-butylindanyl analogues to demonstrate the most similar profiles to indacaterol. An alpha-methyl aminoindane analogue was discovered to be 25-fold more potent than indacaterol, and functional studies revealed an atypical beta(2)-adrenoceptor activation profile for this compound consistent with that of a slowly dissociating 'super agonist'. (C) 2012 Elsevier Ltd. All rights reserved.
KIKUGAWA, YASUO;SHIMADA, MASAHIRO, J. CHEM. SOC. CHEM. COMMUN.,(1989) N9, C. 1450-1451
作者:KIKUGAWA, YASUO、SHIMADA, MASAHIRO
DOI:——
日期:——
Highly E-selective synthesis of α,β-unsaturated amides from N-2-methoxyphenyl aldimines via lithium ynolates
Lithium ynolates reacted with N-2-methoxyphenyl (OMP) aldimines to afford α,β-unsaturated amides in excellent E-selectivity via a retro-Mannich reaction of the 2:1 adducts (β-lactams), followed by cleavage of the β-lactam enolates.
AlCl3-mediated regioselective migration of a methoxy group of N-methoxy-N-phenylamides to the ortho position of the phenyl ring
作者:Yasuo Kikugawa、Masahiro Shimada
DOI:10.1039/c39890001450
日期:——
AlCl3-mediated decomposition of N-methoxy-N-phenylamides in dichloroethane leads to regioselective intramolecular migration of the methoxygroup from the nitrogen to the orthoposition of the phenylring via a tight ion pair intermediate.