(2-hydroxy)ethyl-thioureas useful as modulators of alpha2B adrenergic receptors
申请人:ALLERGAN SALES, INC.
公开号:US20020161051A1
公开(公告)日:2002-10-31
Compounds of formula (i) and of formula (ii)
1
wherein the symbols have the meaning disclosed in the specification, specifically or selectively modulate &agr;
2B
and/or &agr;
2C
adrenergic receptors in preference over &agr;
2A
adrenergic receptors, and as such are useful for alleviating chronic pain and allodynia and have no or only minimal cardivascular and/or sedatory activity.
Intramolecular photo[2+2]cycloaddition of 4-(3-methyl-2-cyclohexenyl)methoxybicyclo [3.3.1] non-3-en-2-one, followed by oxidation with RuO4, and by alkaline hydrolysis, gave 8-methyltricyclo[9.3.1.03,8] pentadecane-2,10-dione-4-carboxylic acid, a (±)-3β-trinortaxane derivative.
Although the [2,3]-Wittig and Wittig-Still rearrangements have long been known, their application in the generation of quaternary carbon centers in carbocyclic ring systems is sparse. Model studies utilizing this strategy and possible mechanisms are discussed herein. Unprecedented examples of an a-elimination pathway from stannylmethyl allyl ethers as a major undesired product in some Wittig-Still rearrangements are reported.
(2-HYDROXY)ETHYL-THIOUREAS USEFUL AS MODULATORS OF ALPHA2B ADRENERGIC RECEPTORS