Nonpeptide Angiotensin II Receptor Antagonists. Synthesis, in vitro Activity, and Molecular Modeling Studies of N-[(Heterobiaryl)methyl]imidazoles
摘要:
With the aim of explaining the influence of the structural changes on the biphenylic moiety on the activity, a series of N-[(heterobiaryl)methyl]imidazoles (I), constructed on the model of DuPont compounds by replacing either the central or terminal phenyl ring with a heteroaromatic one, such as furan, thiophene, thiazole, and pyridine, was synthesized. Compared to the reference DuPont compound (EXP-7711), all the heterobiaryl derivatives showed a reduced potency both in receptor binding (rat adrenal capsular membranes) and in the functional assay (angiotensin II-induced contraction of rabbit aorta strips). The lower activity was justified by the extensive molecular modeling studies, which took into consideration the conformational and electrostatic features of several heterobiaryl derivatives. On the basis of the results obtained, it was hypothesized that the central aromatic ring of the biarylic portion works as a spacer, orienting in the right way the terminal phenyl ring, whose electronic distribution is, instead, crucial to its fitting well with a lipophilic pocket at the receptor site.
Design and synthesis of condensed thienocoumarins by Suzuki–Miyaura reaction/lactonization tandem protocol
摘要:
A concise and efficient approach to a series of chromen-4-ones with fused thiophene ring has been developed using the Suzuki-Miyaura reaction of bromothiophene-2- and 3-carboxylates with 2-methoxyboronic acids and subsequent cyclization of prepared alkyl (2-methoxy)aryl thiophene-2- and 3-carboxylates under the action of BBr3/KOtBu. Starting bromothiophenes are easily obtained from corresponding commercially available aminothiophenes by diazotization/bromination reaction. (C) 2012 Elsevier Ltd. All rights reserved.
Rhodium‐Catalyzed
<i>ortho</i>
‐Arylation of (Hetero)aromatic Acids
作者:Philip Weber、Christian K. Rank、Enis Yalcinkaya、Marco Dyga、Tim van Lingen、Rochus Schmid、Frederic W. Patureau、Lukas J. Gooßen
DOI:10.1002/adsc.201900596
日期:2019.9.3
Rhodium acetate effectively promotes the carboxylate‐directed ortho‐arylation of (hetero)aromatic carboxylates with aryl bromides. The main advantage of this phosphine‐free, redox‐neutral method arises from its efficiency in assembling biologically meaningful electron‐rich arylpyridines, which are problematic substrates in known C−H arylations using Pd, Ru, and Ir catalysts.
[EN] IMIDAZOLE ETHERS HAVING A II ANTAGONIST ACTIVITY<br/>[FR] ETHERS DE L'IMIDAZOLE AYANT UNE ACTIVITE ANTAGONISTE DES RECEPTEURS A L'ANGIOTENSINE II
申请人:INSTITUTO LUSO FARMACO D'ITALIA S.P.A.
公开号:WO1994002467A1
公开(公告)日:1994-02-03
(EN) Compounds of general formula (I), the processes for the preparation and the use thereof as therapeutical agents. The described compounds have A II antagonist properties and they can be used in various cardiovascular disorders.(FR) L'invention concerne les composés ayant la formule générale (I), les procédés pour leur préparation et leur utilisation comme agents thérapeutiques. Les composés décrits ont une activité antagoniste de l'angiotensine II et ils peuvent être utilisés pour traiter différents troubles cardiovasculaires.