Application of the BHQ benzannulation reaction to the synthesis of benzo-fused coumarins
摘要:
A new approach to the synthesis of the 6H-benzo[d]naphthal[,2-b]pyran-6-one ring system present in the gilvocarcin family of antibiotics is described. The key feature of this approach is the application of a new benzannulation strategy (the 'BHQ Reaction') whereby readily available ortho-allylaryl trichloroacetates are transformed into naphthalene derivatives via a cascade of reactions involving an initial ATRC reaction followed by the extrusion of CO2. (C) 2009 Elsevier Ltd. All rights reserved.
Application of the BHQ benzannulation reaction to the synthesis of benzo-fused coumarins
摘要:
A new approach to the synthesis of the 6H-benzo[d]naphthal[,2-b]pyran-6-one ring system present in the gilvocarcin family of antibiotics is described. The key feature of this approach is the application of a new benzannulation strategy (the 'BHQ Reaction') whereby readily available ortho-allylaryl trichloroacetates are transformed into naphthalene derivatives via a cascade of reactions involving an initial ATRC reaction followed by the extrusion of CO2. (C) 2009 Elsevier Ltd. All rights reserved.
[EN] SKIN PIGMENTATION MODIFIERS TO DARKEN OR LIGHTEN THE SKIN<br/>[FR] AGENTS DE MODIFICATION DE LA PIGMENTATION DE LA PEAU EN VUE DE L'ASSOMBRIR OU DE L'ÉCLAIRCIR
申请人:AFFICHEM
公开号:WO2016193220A1
公开(公告)日:2016-12-08
The present invention relates to a method for changing the pigmentation of a skin, a mucous membrane or hair with a compound of general formula (I), a cosmetic use of said compound of general formula (I), to cosmetic compositions comprising said compound of general formula (I), and to new depigmenting agents.