71202-99-8Relevant articles and documents
Highly regioselective synthesis of novel aromatic esters of arbutin catalyzed by immobilized lipase from Penicillium expansum
Yang, Rong-Ling,Li, Ning,Ye, Min,Zong, Min-Hua
experimental part, p. 41 - 44 (2010/12/19)
Ester derivatives of phenolic glycosides have attracted more attention in food, cosmetic and pharmaceutical industries, due to their potent biological activities. In the present study, a group of novel aromatic esters of arbutin were successfully synthesized by using immobilized lipase from Penicillium expansum with excellent 6′-regioselectivities (>99%) and moderate to excellent isolated yields (68-93%), except for 6′-O-vanilloyl-arbutin and 6′-O-(p-hydroxycinnamoyl)-arbutin with 28% and 34% yields, respectively. Among all the acyl donors tested, the lipase was most active towards vinyl 3-phenylpropionate, while remarkable decrease in the activity was recorded when the phenyl of acyl donors carried the hydroxyl and/or methoxyl.
TYROSINASE ACTIVITY CONTROLLING AGENTS, PROCESS FOR PRODUCING THE SAME AND EXTERNAL PREPARATIONS CONTAINING THE SAME
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Page/Page column 22-23, (2008/06/13)
Disclosed is a tyrosinase activity controlling agent comprising, as an active ingredient, a compound that has tyrosinase inhibiting or promoting activity, an external preparation comprising the controlling agent, and a process for producing the compound.
Polyphenolic glycosides from african proteaceae
Verotta,Orsini,Pelizzoni,Torri,Rogers
, p. 1526 - 1531 (2007/10/03)
The phytochemical investigation of members of the genus Protea afforded a series of polyphenolic compounds (1-5) that were identified by 1D and 2D NMR experiments. Of these, 2-5 are new compounds. Chemical syntheses of 1-3 were performed in order to confirm the structures and to prepare additional material for biological evaluation.
