Skin lightening agents, compositions and methods

• US 7,723,537 B2
• Filed: 10/22/2007
• Issued: 05/25/2010
• Est. Priority Date: 02/27/2004
• Status: Active Grant

• Current Assignee: Unilever Home & Personal Care USA (Unilever PLC)
• Original Assignee: Unilever Home & Personal Care USA (Unilever PLC)
• Inventors: Bosko, Carol Annette, Rosa, Jose Guillermo, Bajor, John Steven, Barratt, Michael James, Harichian, Bian
• Primary Examiner(s): Zucker; Paul A
• Assistant Examiner(s): VALENROD, YEVGENY
• Application Number:
  US11/875,994
• Publication Number:
  US 20080039636A1
• Time in Patent Office: 946 Days
• Field of Search: None
• US Class Current: 562/471
• CPC Class Codes: A61K 2800/782 Enzyme inhibitors; Enzyme antagonists
• CPC Class Codes: A61K 8/365 Hydroxycarboxylic acids; Ketocarboxylic acids
• CPC Class Codes: A61K 8/37 Esters of carboxylic acids
• CPC Class Codes: A61Q 19/02 for chemically bleaching or whitening the skin
• CPC Class Codes: C07C 59/52 a hydroxy or O-metal group being bound to a carbon atom of a six-membered aromatic ring
• CPC Class Codes: C07C 69/732 of unsaturated hydroxy carboxylic acids

Abstract

Disclosed is a coumarin derived compound of formula (I) as skin lightening agent alone or in combination with other skin benefit agents and together with a cosmetic vehicle:

Claims

1. A compound of formula: