Design, synthesis, and biological evaluation of pirenzepine analogs bearing a 1,2-cyclohexanediamine and perhydroquinoxaline units in exchange for the piperazine ring as antimuscarinics
摘要:
Pirenzepine (2) is one of the most selective muscarinic M-1 versus M-2 receptor antagonists known. A series of 2 analogs, in which the piperazyl moiety was replaced by a cis-and trans-cyclohexane-1,2-diamine (3-6) or a trans-and cis-perhydroquinoxaline rings (7 and 8) were prepared, with the aim to investigate the role of the piperazine ring of 2 in the interaction with the muscarinic receptors. The structural change leading to compounds 3-6 abolished in binding assays the muscarinic M-1/M-2 selectivity of 2, due to an increased M-2 affinity. Rather, compounds 3-6 displayed a reversed selectivity showing more affinity at the muscarinic M-2 receptor than at all the other subtypes tested. (C) 2008 Elsevier Ltd. All rights reserved.
[EN] DECAHYDROQUINOXALINE DERIVATIVES AND ANALOGS THEREOF<br/>[FR] DÉRIVÉS DE DÉCAHYDROQUINOXALINE ET LEURS ANALOGUES
申请人:OTSUKA PHARMA CO LTD
公开号:WO2013137479A1
公开(公告)日:2013-09-19
A heterocyclic compound represented by the general formula (1) or a salt thereof: wherein m, l, and n respectively represent an integer of 1 or 2; X represents -O- or -CH2-; R1 represents hydrogen, a lower alkyl group, a hydroxy-lower alkyl group, a protecting group, or a tri-lower alkylsilyloxy-lower alkyl group; R2 and R3, which are the same or different, each independently represent hydrogen or a lower alkyl group; or R2 and R3 are bonded to form a cyclo-C3-C8 alkyl group; and R4 represents an aromatic group or a heterocyclic group, wherein the aromatic or heterocyclic group may have one or more arbitrary substituent(s).
[EN] HETEROCYCLIC COMPOUNDS FOR TREATING OR PREVENTING DISORDERS CAUSED BY REDUCED NEUROTRANSMISSION OF SEROTONIN, NOREPHNEPHRINE OR DOPAMINE.<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES POUR LE TRAITEMENT OU LA PRÉVENTION DE TROUBLES PROVOQUÉS PAR UNE NEUROTRANSMISSION RÉDUITE DE LA SÉROTONINE, DE LA NORÉPINEPHRINE OU DE LA DOPAMINE
申请人:OTSUKA PHARMA CO LTD
公开号:WO2012036253A1
公开(公告)日:2012-03-22
A heterocyclic compound represented by the general formula (1) or a salt thereof: wherein m, l, and n respectively represent an integer of 1 or 2; X represents -O- or -CH2-; R1 represents hydrogen, a lower alkyl group, a hydroxy-lower alkyl group, a protecting group, or a tri-lower alkylsilyloxy-lower alkyl group; R2 and R3, which are the same or different, each independently represent hydrogen or a lower alkyl group; or R2 and R3 are bonded to form a cyclo-C3-C8 alkyl group; and R4 represents an aromatic group or a heterocyclic group, wherein the aromatic or heterocyclic group may have one or more arbitrary substituent(s).
Carbon dioxide can be used as a convenient carbonylating agent in the synthesis of 2-oxazolidinones, 2-oxazinones, and cyclic ureas. The transient carbamate anion generated by treating a primary or secondary amine group in basic media can be activated with phosphorylatingagents such as Diphenylphosphoryl azide (DPPA) and Diphenyl chlorophosphate (DPPCl) but also with other types of electrophiles such
A Manganese Alternative to Gadolinium for MRI Contrast
作者:Eric M. Gale、Iliyana P. Atanasova、Francesco Blasi、Ilknur Ay、Peter Caravan
DOI:10.1021/jacs.5b10748
日期:2015.12.16
is sorely needed. We present the new manganese(II) complex [Mn(PyC3A)(H2O)](-) as a Gd alternative. [Mn(PyC3A)(H2O)](-) is among the most stable Mn(II) complexes at pH 7.4 (log KML = 11.40). In the presence of 25 mol equiv of Zn at pH 6.0, 37 °C, [Mn(PyC3A)(H2O)](-) is 20-fold more resistant to dissociation than [Gd(DTPA)(H2O)](2-). Relaxivity of [Mn(PyC3A)(H2O)](-) in blood plasma is comparable to
HETEROCYCLIC COMPOUNDS FOR TREATING OR PREVENTING DISORDERS CAUSED BY REDUCED NEUROTRANSMISSION OF SEROTONIN, NOREPHNEPHRINE OR DOPAMINE
申请人:Ito Nobuaki
公开号:US20130261081A1
公开(公告)日:2013-10-03
A heterocyclic compound represented by the general formula (1) or a salt thereof:
wherein m, l, and n respectively represent an integer of 1 or 2; X represents —O— or —CH
2
—;
R
1
represents hydrogen, a lower alkyl group, a hydroxy-lower alkyl group, a protecting group, or a tri-lower alkylsilyloxy-lower alkyl group;
R
2
and R
3
, which are the same or different, each independently represent hydrogen or a lower alkyl group; or R
2
and R
3
are bonded to form a cyclo-C3-C8 alkyl group; and
R
4
represents an aromatic group or a heterocyclic group, wherein
the aromatic or heterocyclic group may have one or more arbitrary substituent(s).