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Esters of 6-aminohexanoic acid as skin permeation enhancers : The effect of branching in the alkanol moiety
Hrabálek A, Vávrová K, Dolezal P, Machácek M.
Jazyk angličtina Země Spojené státy americké
NLK
Medline Complete (EBSCOhost)
od 2005-06-01 do 2015-12-31
Wiley Online Library (archiv)
od 1996-01-01 do 2012-12-31
- MeSH
- alkoholy chemie MeSH
- aminokapronáty MeSH
- estery farmakologie chemie MeSH
- financování vládou MeSH
- kožní absorpce účinky léků MeSH
- kyselina 6-aminokapronová farmakologie chemie MeSH
- lidé MeSH
- magnetická rezonanční spektroskopie MeSH
- techniky in vitro MeSH
- vysokoúčinná kapalinová chromatografie MeSH
- vztahy mezi strukturou a aktivitou MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
In order to investigate the effect of branching and cyclization in the hydrophobic part of skin permeation enhancers, 17 novel branched-chain and cyclic 6-aminohexanoic acid esters were prepared. Their permeation enhancing activity was evaluated in vitro using human skin and theophylline as a model drug, and compared to that of the corresponding linear-chain analogues. The results showed that chain branching and cyclization has a negative influence on the enhancing activity of 6-aminohexanoates. For example, the enhancement ratios (ERs) of dodecan-1-yl, dodecan-2-yl, dodecan-4-yl, and cyclododecyl ester were 39.7, 29.3, 3.1, and 2.2, respectively. No significant change in the optimum length of the chain was observed. Dodecan-2-yl 6-aminohexanoate, the most active branched derivative, still maintains a remarkable enhancing activity (ER 29.3). Presumably, the relatively small degree of branching of these molecules does not prevent them from interacting with the lipid components of the stratum corneum. However, a higher degree of branching, cyclization of the chain, and presence of an aromatic ring resulted in a loss of activity. (c) 2005 Wiley-Liss, Inc.
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- $a Esters of 6-aminohexanoic acid as skin permeation enhancers : $b The effect of branching in the alkanol moiety / $c Hrabálek A, Vávrová K, Dolezal P, Machácek M.
- 314 __
- $a Department of Inorganic and Organic Chemistry, Charles University in Prague, Faculty of Pharmacy, Heyrovského 1203, 50005 Hradec Králové, Czech Republic. hrabalek@faf.cuni.cz
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- $a In order to investigate the effect of branching and cyclization in the hydrophobic part of skin permeation enhancers, 17 novel branched-chain and cyclic 6-aminohexanoic acid esters were prepared. Their permeation enhancing activity was evaluated in vitro using human skin and theophylline as a model drug, and compared to that of the corresponding linear-chain analogues. The results showed that chain branching and cyclization has a negative influence on the enhancing activity of 6-aminohexanoates. For example, the enhancement ratios (ERs) of dodecan-1-yl, dodecan-2-yl, dodecan-4-yl, and cyclododecyl ester were 39.7, 29.3, 3.1, and 2.2, respectively. No significant change in the optimum length of the chain was observed. Dodecan-2-yl 6-aminohexanoate, the most active branched derivative, still maintains a remarkable enhancing activity (ER 29.3). Presumably, the relatively small degree of branching of these molecules does not prevent them from interacting with the lipid components of the stratum corneum. However, a higher degree of branching, cyclization of the chain, and presence of an aromatic ring resulted in a loss of activity. (c) 2005 Wiley-Liss, Inc.
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