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https://doi.org/10.1016/0031-9422(96)00291-9
Title: | Flavans and A-type proanthocyanidins from Prunus prostrata | Authors: | Bilia, A.R. Morelli, I. Hamburger, M. Hostettmann, K. |
Keywords: | 5,7,2',5'-tetrahydroxy-(2R,3R)- flavan-3-ol 7-methoxy-(+)-catechin aerial parts ent-epiafzalechin (2α → O → 7, 4α → 8) quercetin Prunus prostrata Rosaceae |
Issue Date: | Nov-1996 | Citation: | Bilia, A.R., Morelli, I., Hamburger, M., Hostettmann, K. (1996-11). Flavans and A-type proanthocyanidins from Prunus prostrata. Phytochemistry 43 (4) : 887-892. ScholarBank@NUS Repository. https://doi.org/10.1016/0031-9422(96)00291-9 | Abstract: | A new natural dimeric A-type proanthocyanidin and two new monomeric flavanols have been isolated from Prunus prostrata and identified as ent- epiafzelechin (2α → O → 7, 4α → 8) quercetin, 5,7,2',5'-tetrahydroxy- (2R,3R)-flavan-3-ol and, 7-methoxy-(+)-catechin, respectively. The structurally related metabolites ent-epiafzelechin (2α → O → 7, 4α → 8) afzelechin, ent-epiafzelechin (2α → O → 7, 4α → 8) kaempferol, ent- epiafzelechin (2α → O → 7, 4α → 8) epicatechin, ent-epiafzelechin (2α → O → 7, 4α → 8) epiafzelechin, ent-epiafzelechin (2α → O → 7, 4α → 8) catechin, (+)-catechin and (-)-epicatechin were also isolated. Structure elucidation was achieved by extensive NMR (homo- and hetero-nuclear two- dimensional correlation, NOE difference, and selective INEPT experiments) and CD studies. | Source Title: | Phytochemistry | URI: | http://scholarbank.nus.edu.sg/handle/10635/131476 | ISSN: | 00319422 | DOI: | 10.1016/0031-9422(96)00291-9 |
Appears in Collections: | Staff Publications |
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