Para-coumaric acid or para-hydroxycinnamic acid derivatives and their use in cosmetic or dermatological compositions
申请人:Okombi Sabrina
公开号:US20070183996A1
公开(公告)日:2007-08-09
The invention relates to the use of para-coumaric acid or para-hydroxycinnamic acid derivatives in cosmetic or dermatological compositions, specifically to the use of at least one compound derived from para-coumaric acid having a general formula (I) below:
in which, especially, Z represents an oxygen or an —NH— group; X and Y are identical and each represent a CH or CH
2
group, as an active principle with depigmenting, free-radical-scavenging and/or antiinflammatory activity.
The invention also relates to the use of the above compounds for cosmetic care or for the preparation of a pharmaceutical composition, especially for depigmenting an area of skin, having antiradical and/or antiinflammatory activity.
Synthesis of Amide and Ester Derivatives of Cinnamic Acid and Its Analogs: Evaluation of Their Free Radical Scavenging and Monoamine Oxidase and Cholinesterase Inhibitory Activities
and selective MAO-B inhibitory activity. Compound 20 was the most potent inhibitor of MAO-B. Compounds 18 and 21 showed moderate BChE inhibitory activity. In addition, compound 18 showed potent antioxidant activity and MAO-B inhibitory activity. In a comparison of the cinnamic acid amides and esters, the amides exhibited more potent DPPH free radicalscavengingactivity, while the esters showed stronger
Termite antifeedant activity in Xylopia aethiopica
作者:Labunmi Lajide、Pierre Escoubas、Junya Mizutani
DOI:10.1016/0031-9422(95)92653-p
日期:1995.11
disk bioassay. Bioassay-directed fractionation led to the isolation and identification of six ent-kaurane diterpenes in the hexane extract. Feeding deterrent activity varied significantly with the structures when the compounds were tested at concentrations ranging from 5000 ppm (40 μg cm −2 ) to 100 ppm (0.824 μg cm −2 ). (−)-Kaur-16-en-19-oic acid had the strongest termite antifeedants activity among
Identification and Quantification of Potential Anti-inflammatory Hydroxycinnamic Acid Amides from Wolfberry
作者:Siyu Wang、Joon Hyuk Suh、Xi Zheng、Yu Wang、Chi-Tang Ho
DOI:10.1021/acs.jafc.6b05136
日期:2017.1.18
their active components. We synthesized a set of hydroxycinnamic acid amide (HCCA) compounds, including trans-caffeic acid, trans-ferulic acid, and 3,4-dihydroxyhydrocinnamic acid, with extended phenolic amine components as standards to identify and quantify the corresponding compounds from wolfberry and to investigate anti-inflammatory properties of these compounds using in vitro model. With optimized
A phenolic amide, N-p-coumaroyltyramine (1), was isolated as an α-glucosidase inhibitor from methanol extracts of Welsh onion (Allium fistulosum). The inhibitory activity of 1 against a yeast enzyme was as high as Ki 8.4 × 10−7 m. From a structure-activity relationship study of 1 and its related compounds, the occurrence of α-glucosidase inhibitory activity required a p-coumaramide structure, with an amide hydrogen and alkyl or aralkyl substituent on the amide part.