Selektive Dopamin D‐2 Autorezeptor Agonisten mit 8‐Azaindol Substruktur: Synthese und theoretische Untersuchungen
- 1 January 1994
- journal article
- abstracts
- Published by Wiley in Archiv der Pharmazie
- Vol. 327 (7) , 435-443
- https://doi.org/10.1002/ardp.19943270706
Abstract
Ausgehend vom 1,3‐dipolaren Cycloadditionsprodukt 6a wird der peri‐anellierte β‐Ketoester 7 dargestellt. 7 wird als zentrales Zwischenprodukt für zwei Synthesevarianten des D‐2 Autorezeptoragonisten 5 verwendet, wobei die Aminfunktion über elektrophile Aminierung bzw. Curtius Abbau eingebaut wird. Die Ladungsverteilung im aromatischen Bereich von 5 wurde mit quantenchemischen Verfahren berechnet und mit der von Ergolinderivaten verglichen. Dabei wurden ab‐initio Kalkulationen und semiempirische Methoden gegenübergestellt. Selective Dopamine D‐2 Autoreceptor Agonists with 8‐Azaindole Substructure: Synthesis and Theoretical Investigations Starting from the 1,3‐dipolar cycloaddition product 6a the peri‐fused β‐ketoester 7 is prepared. 7 is employed as a key intermediate for the synthesis of the D‐2 autoreceptor agonist 5. Two alternative approaches are used for installing the amino function: electrophilic animation and Curtius rearrangement. The distribution of charge of the aromatic moiety of 5 has been determined by molecular orbital calculations and compared to the respective values of the ergolines. The results of ab‐initio calculations and semi‐empirical methods have been compared.Keywords
This publication has 19 references indexed in Scilit:
- Dopamine autoreceptor agonists: computational studies, synthesis and biological investigationsBioorganic & Medicinal Chemistry Letters, 1993
- Comparison of 5-HT1A and dopamine D2 pharmacophores. X-ray structures and affinities of conformationally constrained ligandsJournal of Medicinal Chemistry, 1993
- Structure-activity relationships in the trans-hexahydroindolo[4,3-ab]phenanthridine ("benzergoline") series. 2. Resolution, absolute configuration, and dopaminergic activity of the selective D1 agonist CY 208-243 and its implication for an "extended rotamer-based dopamine receptor model"Journal of Medicinal Chemistry, 1993
- Synthesis of Amines and Amino Alcohols by Electrophilic Amination and Highly Stereoselective ReductionEuropean Journal of Organic Chemistry, 1992
- Enantiomerically Pure Aminoindolizines: Bicyclic Ergoline Analogues with Dopamine Autoreceptor ActivityArchiv der Pharmazie, 1992
- Tricyclic Azaergoline Analogues: Synthesis, Structural Modifications, and Pharmacological StudiesArchiv der Pharmazie, 1992
- Azaindol-Derivate I: Asymmetrische Synthese einer neuen α-AminosäureArchiv der Pharmazie, 1988
- Design and synthesis of sodium (.beta.R*,.gamma.S*)-4-[[3-(4-acetyl-3-hydroxy-2-propylphenoxy)propyl]thio]-.gamma.-hydroxy-.beta.-methylbenzenebutanoate: a novel, selective, and orally active receptor antagonist of leukotriene D4Journal of Medicinal Chemistry, 1986
- Dopaminergic pharmacophore of ergoline and its analogs. A molecular electrostatic potential studyJournal of Medicinal Chemistry, 1986
- Synthesis of peri-fused indolizines and azaindolizines by intramolecular 1,3-dipolar cycloaddition of 3-(phenylpropynoyloxyalkyl)pyridine N-ylidesJournal of the Chemical Society, Perkin Transactions 1, 1985