Stilbene glucosides from the bulbs of Iris tingitana |
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Authors: | Salwa F Farag Yoshiaki Takaya Masatake Niwa |
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Institution: | 1. Pharmacognosy Department, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt;2. Faculty of Pharmacy, Meijo University, Tempaku, Nagoya 468-8503, Japan |
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Abstract: | Two new dimeric stilbene glucosides, tingitanol A (1) and tingitanol B (2) together with trans-resveratrol 3-O-glucopyranoside (3) in addition to three known isoflavones, 5-O-methylgenistein (4), 5-O-methylgenistein 7-O-β-d-glucopyranoside (5) and betavulgarin (6) have been isolated for the first time from the fresh bulbs of Iris tingitana Boiss. & Reut. Their structures were established on the basis of the spectral data and direct comparison with values from previously identified analogues. Additionally, the isolated compounds (1–6) were evaluated for the free radical scavenging activity. |
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