Structure−Activity Relationship of Quinoline Derivatives as Potent and Selective α2C-Adrenoceptor Antagonists
摘要:
Starting from two acridine compounds identified in a high-throughput screening campaign (1 and 2, Table 1), a series of 4-aminoquinolines was synthesized and tested for their properties on the human alpha(2)-adrenoceptor subtypes (alpha(2A), alpha(2B), and alpha(2C.)). A number of compounds with good antagonist potencies against the alpha(2C)-adrenoceptor and excellent subtype selectivities over the other two subtypes were discovered. For example, (R)-{4-[4-(3,4-dimethylpiperazin-1-yl) phenylamino] quinolin- 3- yl} methanol 6j had an antagonist potency of 8.5 nM against, and a subtype selectivity of more than 200-fold for, the alpha(2C)-adrenoceptor. Investigation of the structure-activity relationship identified a number of structural features, the most critical of which was an absolute need for a substituent in the 3-position of the quinoline ring. The 3-position on the piperazine ring was also found to play an appreciable role, as substitutions in that position exerted a significant and stereospecific beneficial effect on the alpha(2C)-adrenoceptor affinity and potency. Replacing the piperazine ring proved difficult, with 1,4-diazepanes representing the only viable alternative.
Compounds having the following formula (I) and methods of their use and preparation are disclosed:
具有以下化学式(I)的化合物以及它们的使用和制备方法已被披露:
[EN] ANTAGONISTS FOR ALPHA-2 ADRENOCEPTORS<br/>[FR] ANTAGONISTES POUR RECEPTEURS ALPHA-2 ADRENERGIQUES
申请人:JUVANTIA PHARMA LTD OY
公开号:WO2004067513A1
公开(公告)日:2004-08-12
The invention provides a compound of formula (I), wherein Q, Y, A, Ra, Rb, R1 to R4, u and t are as defined in claim 1, or a pharmaceutically acceptable salt or ester thereof, useful as an alpha-2 antagonist. The compounds of formula (I) can be used for the treatment of diseases or conditions where antagonists of alpha-2 adrenoceptors are indicated to be effective.
Compounds, pharmaceutical compositions, and methods for inhibiting cyclin-dependent kinases
申请人:——
公开号:US20030220326A1
公开(公告)日:2003-11-27
Pharmaceutical compositions containing effective amounts of CDK-inhibiting diaminothiazole compounds of the following formula (where R
1
and R
2
are as defined in the specification) or their salts, or prodrugs or active metabolites of such compounds or salts, are useful for treating disorders and diseases such as cancer:
1
In preferred embodiments, R
1
and R
2
are independently unsubstituted or substituted carbocyclic or heterocyclic aryl ring structures. Compounds where R
2
is ortho-substituted aryl are especially potent inhibitors of CDKs such as CDK4.
Heterocyclic amide compounds as apolipoprotein b inhibitors
申请人:Takasugi Hisashi
公开号:US20050038035A1
公开(公告)日:2005-02-17
The present invention relates to a compound of the formula (I) wherein R
1
is optionally substituted aryl; R
2
is optionally substituted aryl, optionally substituted heteroaryl, optionally substituted lower cycloalkyl, optionally substituted aryloxy, optionally substituted arylsulfonyl, vinyl, carbamoyl, protected carboxy or protected amino; ring A is bivalent residue derived from optionally substituted aryl or optionally substituted heteroaryl; X is bivalent residue derived from the group consisting of cycloalkene, naphthalene, unsaturated 5 or 6-membered heteromonocyclic group, each of which is optionally substituted, and substituted benzene; Y is -(A
1
)
m1
-(A
2
)
m2
-; and Z is direct bond or piperazine, or a salt thereof. The compound of the present invention and a salt thereof inhibit apolipoprotein B (Apo B) secretion and are useful as a medicament for prophylactic and treatment of diseases or conditions resulting from elevated circulating levels of Apo B.
The present invention relates to a urea derivative or a pharmacologically acceptable salt thereof having an excellent DGAT inhibitory effect. A urea derivative having the formula:
[wherein R
1
is a C
6
-C
10
aryl group which may be independently mono- to pentasubstituted by a group selected from Substituent Group a or others; R is a C
6
-C
10
aryl group which may be independently mono- to pentasubstituted by a group selected from Substituent Group a or others; E is a group having the formula (II) or the formula (III) (wherein R
3
is a hydrogen atom or others; R
4
and R
5
, which are the same or different, are a hydrogen atom or others; X and U, which are the same or different, are a group represented by the formula CH or others; m and n, which are the same or different, are I or another number) or others; and A is a group represented by the formula —NH—C(═O)— or others], or a pharmacologically acceptable salt thereof.