.alpha.-Adrenoceptor reagents. 2. Effects of modification of the 1,4-benzodioxan ring system on .alpha.-adrenoreceptor activity
摘要:
Modification of the 1,4-benzodioxan ring present in RX 781094 has not previously been considered. This paper describes a number of analogues of this ring system, including compounds in which one of the oxygen atoms has been replaced by a methylene group and also those in which the ring size has been changed to give, for example, furan and thiophene derivatives. The dihydrobenzofuranylimidazoline compound 7 is the only analogue possessing presynaptic antagonist potency potency and selectivity comparable to that of 1. In view of this result, a number of derivatives was prepared to determine the structure-activity relationships within this series. Many derivatives, as well as the parent compound 7, were found to possess presynaptic alpha 2-adrenoreceptor antagonist and postsynaptic alpha 1-adrenoreceptor partial agonist properties. Two of the selective presynaptic antagonists, 13 and 14 possess greater potency and selectivity than that possessed by 1. The 5-chloro derivative 25 is twice as potent as after oral administration but only about half as potent when given intravenously.
ANTAGONISTS OF THE TRPV1 RECEPTOR AND USES THEREOF
申请人:Bayburt Erol K.
公开号:US20080153871A1
公开(公告)日:2008-06-26
The present application is directed to compounds that are TRPV1 antagonists and have formula (I)
wherein variables Ar
1
, L
1
, R
1
, R
2
, R
3
, R
4
, R
5
, Y
1
, Y
2
, and Y
3
, are as defined in the description, which are useful for treating disorders caused by or exacerbated by vanilloid receptor activity.