90772-83-1Relevant academic research and scientific papers
PHOTOLYTIC RING-EXPANSIONS OF 4-AZIDOQUINOLINES AND 6-AZIDODIAZINES: SOME UNEXPECTED AZEPINE RING-OPENING REACTIONS
Hayes, Roy,Schofield, Joseph M.,Smalley, Robert K.,Scopes, David I. C.
, p. 2089 - 2096 (1990)
Photolysis of 6-azidoquinazoline in MeOH-KOMe-dioxan yields 8,9-dihydro-5,7-dimethoxy-5H-pyrimidoazepine (5) which on acid hydrolysis ring-opens to the pyrimidine-carbaldehyde (7).The mechanism of formation of this unexpected dimethoxypyrimido-azepine is discussed and related to previous similar results involving 6-azido-2,3-dihydrofuro- and 6-azido-2,3-dihydrothienoquinolines. In contrast, 6-azidoquinoxaline and 6-azido-2-chloro-4-methylquinoline on photolysis under similar conditions undergo ring expansion to the expected pyrazino- and pyridoazepines (22a) and (17) respectively.However, photolysis of the latter azide in MeOH-dioxan yields the 3-(2-pyridyl)propenonitrile derivative (18) in a reaction analogous to that undergone by 6-azidophenazine.
6-Acylamino-2-aminoquinolines as potent melanin-concentrating hormone 1 receptor antagonists. Identification, structure-activity relationship, and investigation of binding mode
Ulven, Trond,Frimurer, Thomas M.,Receveur, Jean-Marie,Little, Paul Brian,Rist, ?ystein,N?rregaard, Pia K.,H?gberg, Thomas
, p. 5684 - 5697 (2007/10/03)
Novel 6-acylamino-2-aminoquinoline melanin-concentrating hormone 1 receptor (MCH1R) antagonists were identified by sequential in silico screening with 3D pharmacophore models derived from a series of benzamide antagonists. The structure-activity relationship exploration by synthesis of analogues found structural demands around the western part of the compounds to be quite specific, whereas much structural freedom was found in the eastern part. While these compounds in general suffered from poor solubility properties, the 4-trifluoromethoxy-phenoxyacetamide western appendage provided a favorable combination of activity and solubility properties. The amine in the eastern appendage, originally required by the pharmacophore model and believed to interact with Asp123 in transmembrane 3 of MCH1R, could be removed without diminishing affinity or functional activity of the compounds. Docking studies suggested that the Asp123 interacts preferentially with the nitrogen of the central quinoline. Synthesis and testing of specific analogues supported our revised binding mode hypothesis.
SUBSTITUTED QUINOLINES AS MCR MODULATORS
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Page/Page column 45-46, (2008/06/13)
Quinolines of formula (I) are useful as MCH mediators, and in the therapy of obesity.
Structure-activity relationships of a novel series of melanin-concentrating hormone (MCH) receptor antagonists
Arienzo, Rosa,Clark, David E.,Cramp, Sue,Daly, Stephen,Dyke, Hazel J.,Lockey, Peter,Norman, Dennis,Roach, Alan G.,Stuttle, Keith,Tomlinson, Maxine,Wong, Melanie,Wren, Stephen P.
, p. 4099 - 4102 (2007/10/03)
A new series of 2-aminoquinolines has been identified as antagonists of the melanin concentrating hormone receptor (MCH-1R). Syntheses and structure-activity relationships are described leading to a compound having low nanomolar activity against the receptor and demonstrating functional antagonism. Studies also showed that some of the compounds were selective against a range of other G protein-coupled receptors.
