Alkali Carbonate Effects onN-(2-Hydroxyethyl)ureaCyclization: Application to a 2-Imidazolidinone Scale-Up
摘要:
An imidazolidinone intermediate (3) used in the synthesis of novel HIV-entry inhibitors was prepared on multihundred gram scales in four steps and 40% overall yield. The penultimate step in the synthesis involved regioselective N-cyclization of N-(2-hydroxylethyl)urea (11) by in situ activation of the terminal hydroxyl group with p-TsCl in the presence of base. The ratio of N-cyclized to O-cyclized products followed a group IA periodic trend relative to the alkali carbonate base employed. The use of Cs2CO3 as base effected the desired N-cyclization with a high degree of regiocontrol (>98%).
A class of substituted azetidine, pyrrolidine and piperidine derivatives are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D.alpha. receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT.sub.1D.alpha. receptor subtype relative to the 5-HT.sub.1D.beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.1D receptors is indicated, whilst eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT.sub.1D receptor agonists.
3-[3-(Piperidin-1-yl)propyl]indoles as Highly Selective h5-HT<sub>1D</sub> Receptor Agonists
作者:Michael G. N. Russell、Victor G. Matassa、Roy R. Pengilley、Monique B. van Niel、Bindi Sohal、Alan P. Watt、Laure Hitzel、Margaret S. Beer、Josephine A. Stanton、Howard B. Broughton、José L. Castro
DOI:10.1021/jm9910021
日期:1999.12.2
5-HT(1D/1B) receptoragonists are now entering the marketplace as treatments for migraine. This paper describes the development of selective h5-HT(1D) receptoragonists as potential antimigraine agents which may produce fewer side effects. A series of 3-[3-(piperidin-1-yl)propyl]indoles has been synthesized which has led to the identification of 80 (L-772,405), a high-affinity h5-HT(1D) receptor full agonist
[EN] AZETIDINE, PYRROLIDINE AND PIPERIDINE DERIVATIVES<br/>[FR] DERIVES DE L'AZETIDINE, DE LA PYRROLIDINE ET DE LA PIPERIDINE
申请人:MERCK SHARP & DOHME LIMITED
公开号:WO1996004274A1
公开(公告)日:1996-02-15
(EN) A class of substituted azetidine, pyrrolidine and piperidine derivatives are selective agonists of 5-HT1-like receptors, being potent agonists of the human 5-HT1D$g(a) receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT1D$g(a) receptor subtype relative to the 5-HT1D$g(b) subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT1D receptors is indicated, whilst eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT1D receptor agonists.(FR) Classe de dérivés substitués de l'azétidine, de la pyrrolidine et de la pipéridine constituant des agonistes sélectifs des récepteurs du genre 5-HT1 qui sont puissants agonistes du sous-type de récepteur humain 5-HT1D$g(a) tout en possédant une affinité sélective au moins 10 fois plus forte pour le sous-type 5-HT1D$g(a) que le sous-type 5-HT1D$g(b). Ils s'avèrent de ce fait utiles dans le traitement et/ou la prévention d'états cliniques tels que la migraine ou des troubles associés pour lesquels un sous-type sélectif d'agoniste des récepteurs du 5-HT1D est indiqué, tout en provoquant moins d'effets secondaires, tels que certains phénomènes cardio-vasculaires adverses, que ceux qui sont associés à des agonistes non sélectifs du sous-type du récepteur du 5-HT1D.
Compounds, pharmaceutical compositions and methods of use therefor
申请人:Ghosh Shomir
公开号:US20050143372A1
公开(公告)日:2005-06-30
The invention relates to compounds having the formula (I). Preferred compounds are antagonists of C—C chemokine receptor 8. The invention also relates to a method for treating a subjected having an inflammatory disorder or viral disorder comprising administering to a subject in need thereof an effective amount of a compound of the invention.
The present invention relates to chemokine receptor binding compounds, pharmaceutical compositions and their use. More specifically, the present invention relates to modulators of chemokine receptor activity, preferably modulators of CCR4 or CCR5. In one aspect, these compounds demonstrate protective effects against infection of target cells by a human immunodeficiency virus (HIV).