[EN] PROCESS FOR DYEING KERATIN FIBRES COMPRISING THE APPLICATION OF A CHROMENOL/CHROMEN-2-ONE DERIVATIVE, COMPOSITION AND DEVICE [FR] PROCÉDÉ DE COLORATION DE FIBRES DE KÉRATINE COMPRENANT L'APPLICATION D'UN DÉRIVÉ DE CHROMÉNOL/CHROMÈNE-2-ONE, COMPOSITION ET DISPOSITIF
HF2CSO2Na/Ph2PCl/Me3SiCl system is disclosed for the late-stage direct difluoromethylthiolation of Csp2 and Csp3 nucleophiles. Difluoromethylthiolation of phenols and naphthols proceeded nicely under this system to regioselectively provide corresponding SCF2H compounds in good yields. Other substrates such as indoles, pyrroles, pyrazoles, enamines, ketones, and β-keto esters were also transformed to corresponding
公开了一种新颖的HF 2 CSO 2 Na / Ph 2 PC1 / Me 3 SiCl系统,用于C sp2和C sp3亲核试剂的后期直接二氟甲基硫醇化。在该系统下,苯酚和萘酚的二氟甲基硫醇化反应进展顺利,可以以高收率选择性地提供相应的SCF 2 H化合物。其他底物(如吲哚,吡咯,吡唑,烯胺,酮和β-酮酯)也以良好的产率转化为相应的SCF 2 H产物。还实现了许多天然产物和药学上有吸引力的分子的后期直接二氟甲基硫醇化。
USE OF CHROMAN-4-ONE DERIVATIVES
申请人:Carola Christophe
公开号:US20100028278A1
公开(公告)日:2010-02-04
The invention relates to the use of compounds of the formula (I) or of a composition comprising at least one compound of the formula (I), containing radicals as described in the claims, for the care, preservation or improvement of the general state of the skin or hair.
ANTI-OBESITY AGENT COMPRISING COMPOUND CONTAINING BENZOTROPOLONE RING
申请人:Suntory Holdings Limited
公开号:EP2433625A1
公开(公告)日:2012-03-28
The object of the present invention is to provide an anti-obesity agent which contains a tea-derived component and which is safe and does not compromise the flavor of foods and beverages.
According to the present invention, a safe and palatable anti-obesity agent can be provided by incorporating a benzotropolone ring-containing compound which has tea-derived, high inhibitory activities against lipase and alfa-glucosidase. The anti-obesity agent of the present invention does not compromise the flavor of foods and beverage, has palatability, and can be used in various use applications including foods and beverages intended for health enhancement such as reduction in triglycerides.
COMPOSITION COMPRENANT DES POLYPHÉNOLS DE GRAINES DE PASSIFLORE, DES PEPTIDES D'AVOCAT ET UN EXTRAIT D'HAMAMÉLIS ET UTILISATION POUR TRAITER ET/OU PRÉVENIR LES VERGETURES
申请人:Laboratoires Expanscience
公开号:EP3763355A1
公开(公告)日:2021-01-13
La présente invention concerne des compositions, notamment cosmétiques, comprenant un extrait de polyphénols de graines de passiflore, un extrait de peptides d'avocat et un extrait d'hamamélis. La présente invention porte également sur l'utilisation cosmétique et/ou esthétique d'une telle composition et sur une méthode de soin cosmétique et/ou esthétique utilisant une telle composition, pour prévenir l'apparition des vergetures sur la peau et/ou réduire les vergetures sur la peau. L'invention concerne en outre une composition pharmaceutique comprenant de tels extraits, notamment pour son utilisation dans la prévention ou le traitement des vergetures de la peau.
A biomimetic synthesis of (−)-ascorbyl phloroglucinol and studies toward the construction of ascorbyl-modified catechin natural products and analogues
作者:Sneha A. Belapure、Zachary G. Beamer、John E. Bartmess、Shawn R. Campagna
DOI:10.1016/j.tet.2011.09.102
日期:2011.12
A method for appending the ascorbyl moiety onto the framework of phenolic natural products has been developed. This reaction proceeds in two steps from.-ascorbic acid and employs acetic acid catalysis. Excellent stereoselectivity is observed during C C bond formation between the phenolic compound and dehydroascorbic acid, and the process is also chemoselective for phenol derivatives bearing electron-donating substituents in each of the 1, 3, and 5 positions. Further, good regioselectivity was also observed when phenols lacking an axis of C-2 symmetry were employed. This method has led to the synthesis of (-)-ascorbyl phloroglucinol as well as the tetracyclic core of ascorbyl-modified catechin natural products. (C) 2011 Elsevier Ltd. All rights reserved.