ASPALATHIN-LIKE DIHYDROCHALCONE, EXTRACTS FROM UNFERMENTED ROOIBOS AND PROCESS FOR PREPARATION

摘要

3-(3,4-Dihydroxy-phenyl)-1-[3-[2-(3,4-dihydroxy-phenyl)-3,5,7-trihydroxy-chroman-4-yl]-2,4,6-trihydroxy-5-(3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yl)-phenyl]-propan-1-one (I) and its salt, derivative or ester, is new. Independent claims are included for: (1) a rooibos extract comprising at least 0.4 wt.% of (I); (2) the preparation of (I); and (3) a nourishment supplying agent comprising at least 100 mg/g of the rooibos extract. ACTIVITY : Neuroprotective; Neuroleptic; Nootropic; Antiparkinsonian; Antidepressant; Analgesic; Antimicrobial. MECHANISM OF ACTION : None given.