174608-66-3Relevant academic research and scientific papers
PALLADIUM CATALYZED INDOLIZATION
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, (2008/06/13)
We have found that 2-unsubstituted indoles of structural formula (IV) can be cost-effectively synthesized in high yield by the palladium-catalyzed coupling/ring closure of a 2-halo or 2-trifluoromethylsulfonyloxy aniline (I) and an acyl silane derivative (II), followed by deprotection of the silyl protecting groups. The process of the present invention is particularly useful to form indoles containing acid-labile substituents such as triazole, acetyl, ketal, cyano, and carbamate, or indoles having a good leaving group in the benzyl position. The advantages of the present process are that it does not require the use of triphenyl phosphine or tetrabutyl ammonium chloride or lithium chloride. When applied to 5-triazolyl substituted indoles, the present process also eliminates the tendency of triazolyl polymerization in the Fischer indole synthesis. Still further, the present invention is also directed to the novel intermediates of structural formulae (V) and (VI).
3-(piperazinylpropyl)indoles: Selective, orally bioavailable h5-HT(1D) receptor agonists as potential antimigraine agents
Chambers, Mark S.,Street, Leslie J.,Goodacre, Simon,Hobbs, Sarah C.,Hunt, Peter,Jelley, Richard A.,Matassa, Victor G.,Reeve, Austin J.,Sternfeld, Francine,Beer, Margaret S.,Stanton, Josephine A.,Rathbone, Denise,Watt, Alan P.,MacLeod, Angus M.
, p. 691 - 705 (2007/10/03)
Clinically effective antimigraine drugs such as Sumatriptan have similar affinity at h5-HT(1D) and h5-HT(1B) receptors. In the search for a h5- HT(1D)-selective agonist as an antimigraine agent, a novel series of 3- (propylpiperazinyl)indoles have been sy
Piperazine, piperidine and tetrahydropyridine derivative of indol-3-alkyl as 5-HT1D-α agonists
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, (2008/06/13)
Compounds of formula (I), or a salt or prodrug thereof, wherein Z represents an optionally substituted five-membered heteroaromatic ring selected from furan, thiophene, pyrrole, oxazole, thiazole, isoxazole, isothiazole, imidazole, pyrazole, oxadiazole, thiadiazole, triazole and tetrazole; E represents a chemical bond or a straight or branched alkylene chain containing from 1 to 4 carbon atoms; Q represents a straight or branched alkylene chain containing from 1 to 6 carbon atoms, optionally substituted in any position by a hydroxy group; T represents nitrogen or CH; U represents nitrogen or C--R2 ; V represents oxygen, sulphur or N--R3 ; --F--G-- represents --CH2--N--, --CH2--CH-- or --CH=C--; R1 represents C3-6 alkenyl, C3-6 alkynyl, aryl(C1-6)alkyl or heteroaryl(C1-6)alkyl, any of which groups may be optionally substituted; and R2 and R3 independently represent hydrogen or C1-6 alkyl are selective agonists of 5-HT1D receptors, being potent agonists of the human 5-HT1Dalpha receptor subtype, while possessing at least a 10-fold selective affinity for the 5-HT1Dalpha receptor subtype, relative to the 5-HT1Dbeta 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, while eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT1D receptor agonists.
