我们在此报道了四乙基溴化铵催化 O- 或 S- 烷基化水杨酸或硫代水杨酸衍生物的分子内氧化环化以获得 4 H -苯并[ d ] [1,3] 二恶英-4-酮或 4 H -苯并[ d ] [ 1,3]oxathiin-4-ones,分别。水杨酸衍生物的氧化环化在 110 °C 通过自由基途径进行。相反,硫代水杨酸的环化在室温下通过离子途径顺利进行。值得注意的是,整体反应速度快,反应时间短,产品收率高,季碳中心形成顺利。
Design and synthesis of 6-fluoro-2-naphthyl derivatives as novel CCR3 antagonists with reduced CYP2D6 inhibition
摘要:
In our previous study on discovering novel types of CCR3 antagonists, we found a fluoronaphthalene derivative (1) that exhibited potent CCR3 inhibitory activity with an IC(50) value of 20 nM. However, compound 1 also inhibited human cytochrome P450 2D6 (CYP2D6) with an IC(50) value of 400 nM. In order to reduce its CYP2D6 inhibitory activity, we performed further systematic structural modi. cations on 1. In particular, we focused on reducing the number of lipophilic moieties in the biphenyl part of 1, using Clog D(7.4) values as the reference index of lipophilicity. This research led to the identification of N-{(3-exo)-8-[(6-fluoro-2-naphthyl)methyl]-8-azabicyclo[3.2.1]oct-3-yl}-3-(piperidin-1-ylcarbonyl)isonicotinamide 1-oxide (30) which showed comparable CCR3 inhibitory activity (IC(50) = 23 nM) with much reduced CYP2D6 inhibitory activity (IC50 = 29,000 nM) compared with 1. (C) 2008 Elsevier Ltd. All rights reserved.
The present invention pertains to pro-fragrances and relates to a pro-fragrance compound of the formula (I). Furthermore, the invention relates to compositions, a laundry product, a home care product, and an insect repellant, comprising the compound of formula (I). Also encompassed are a method for preparing the compound of formula (I) and uses of a compound of formula (I) for increasing the longlastingness of a fragrance, for increasing the stability and perception of a fragrance, and for improving the adhesion of a fragrance to textiles.
Suggested is a cosmetic compositions comprising
(a) a crosspolymer obtained from copolymerisation of at least two different polyols and at least one dicarboxylic acid and
(b) at least one fragrance.
A detergent, cleaning, fabric softener or cosmetic composition comprising a compound based on 1-Aza-3,7-dioxabicyclo[3.3.0]octane (bicyclic oxazolidine derivative) substituted with 3,7-dimethyl-1,6-nonyldien represented by formula (I)
is disclosed.
[EN] PRO-FRAGRANCES AND METHOD OF PREPARATION THEREOF<br/>[FR] PRO-PARFUMS ET LEUR PROCÉDÉ DE PRÉPARATION
申请人:HENKEL AG & CO KGAA
公开号:WO2019068508A1
公开(公告)日:2019-04-11
The invention relates to a compound based on 1-Aza-3,7-dioxabicyclo[3.3.0]octane (bicyclic oxazolidine derivative) substituted with 2-phenylpropyl, method for their preparation, and their use as pro-fragrances.
[EN] PRO-FRANGRANCES AND METHOD OF PREPARATION THEREOF<br/>[FR] PRÉCURSEURS DE PARFUMS ET LEUR PROCÉDÉ DE PRÉPARATION
申请人:HENKEL AG & CO KGAA
公开号:WO2019068507A1
公开(公告)日:2019-04-11
The invention relates to a compound based on 1-Aza-3,7-dioxabicyclo[3.3.0]octane (bicyclic oxazolidine derivative) substituted with 3,7-dimethyl-1,6-nonyldien, method for their preparation, and their use as pro-fragrances.