New diarylheptanoids from Alpinia pinnanensis |
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Authors: | Giang Phan Minh Son Phan Tong Matsunami Katsuyoshi Otsuka Hideaki |
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Institution: | Faculty of Chemistry, College of Natural Science, Vietnam National University, Hanoi, Vietnam. |
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Abstract: | Three new diarylheptanoids, called alpinnanins A-C (1-3), together with two known chalcones, 2',4'-dihydroxy-6'-methoxychalcone and 4',6'-dimethylchalconaringenin, two known flavanones, alpinetin and naringenin 5-O-methyl ether, a known diarylheptanoid, (3S,5S)-trans-3,5-dihydroxy-1,7-diphenyl-1-heptene, stigmasterol and beta-sitosterol as a mixture, and beta-sitosterol 3-O-beta-D-glucopyranoside were isolated from the rhizomes of Alpinia pinnanensis T. L. WU et SENJEN (Zingiberaceae). Their structures were elucidated by spectroscopic analyses. |
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