Disclosed are methods and compositions for regulating the melanin content of mammalian melanocytes; regulating pigmentation in mammalian skin, hair, wool or fur; treating or preventing various skin and proliferative disorders; by administration of various compounds, including alcohols, diols and/or triols and their analogues.
A convenient synthesis of substituted pyridylgycols promoted by aqueous titanium trichloride
作者:Angelo Clerici、Ombretta Porta
DOI:10.1016/s0040-4020(01)91888-5
日期:1983.1
with two-equiv. of aqueoustitaniumtrichloride add to the carbonylcarbon atom of simple ketones (acetone, cyclopentanone, cyclohexanone) and aldehydes (acetaldehyde, propionaldehyde, benzaldehyde) affording subatituted pyridylglycols in very good yields. The present one-pot method has considerable advantage over the existing procedure. The reaction is discussed in terms of a radical mechanism in which
Parallel Paired Photoelectrochemical Bromination of Alkylarenes with Electrochemical Pinacol Coupling
作者:Hongshuai Chen、Chaoren Shen、Kaiwu Dong
DOI:10.1021/acs.joc.3c02556
日期:2024.2.16
A paired electrochemical method for paralleling benzylic bromination of alkylarenes under irradiation with reductive pinacol coupling in a divided cell has been developed. A variety of benzyl bromides at the anode and pinacols at the cathode were obtained simultaneously in moderate-to-high faradaic efficiency. This parallel paired electrochemical protocol showed a broad substrate scope and high chemoselectivity
The invention relates to an image support medium for creation of an aesthetic image that is an work or object for display. This support medium includes a polymer in an amount sufficient to enable the image to have at least one aesthetic element. In different embodiments, the image support medium is an image support stabilizer, the polymer is a synthetic absorbent or conductive polymer, or the polymer is a transparent or synthetic translucent polymer and a property of this transparent or translucent polymer is enhanced to facilitate the creation or preservation of the image by at least one stabilizer. The invention also relates to a method for preparing this image support medium. The method includes forming a reaction mixture comprising a monomer in an amount sufficient to provide or enable the image to have an aesthetic element, and processing the reaction mixture into a 2- or 3-dimensional shape.
Method of promoting sleep using topical administration of vasoactive agents
申请人:The Procter & Gamble Company
公开号:US20040254202A1
公开(公告)日:2004-12-16
The present invention is directed to a method of promoting sleep by topically applying onto the skin a composition that comprises a non-hypnotic, vasoactive agent. The non-hypnotic, vasoactive agent is highly effective in providing for the improved quality of sleep through the use of topical application.