Abstract
The co-occurrence of geraniin (2) and a novel ellagitannin, elaeocarpusin (1) in Geranium thunbergii has been demonstrated. In addition, enzymatic transformation of 1 into 2 has been achieved, leading to the evidence that dehydroascorbic acid (4) participates as a co-enzyme in the oxidative metabolism of the hexahydroxydiphenoyl group to the corresponding dehydro group. Furthermore, flavan-3-ol derivatives and gallotannins containing a glucose and a quinic acid core have been isolated, together with previously reported ellagitannins.
| Original language | English |
|---|---|
| Pages (from-to) | 941-943 |
| Number of pages | 3 |
| Journal | Chemical and Pharmaceutical Bulletin |
| Volume | 34 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1986 |
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Drug Discovery