Piperidinium tetrathiotungstate as sulfur transfer reagent: synthesis of cyclic disulfides
摘要:
Piperidinium tetrathiotungstate has been found to react with a number of 1,n-dihalo compounds to afford the corresponding cyclic disulfides in good yields, under mild reaction conditions. This new methodology has been used as a key step in the synthesis of (+/-)-lipoic acid (35) and asparagusic acid (37).
[EN] COMPOSITION COMPRISING PAEONIFLORIN OR ALBIFLORIN ANALOGUE, METHOD OF PREPARATION THEREOF<br/>[FR] COMPOSITION COMPRENANT DE LA PAEONIFLORINE OU UN ANALOGUE D'ALBIFLORINE, SON PROCÉDÉ DE PRÉPARATION
申请人:OREAL
公开号:WO2018053706A1
公开(公告)日:2018-03-29
A composition comprises a compound of formula (I) and at least one cosmetically acceptable carrier. It can be used for preventing or decreasing skin pigmentation and /or lightening skin tone.