New Diarylheptanoids and Kavalactone from Alpinia katsumadai Hayata |
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| Authors: | Yuan‐Yuan Li Gui‐Xin Chou Zheng‐Tao Wang |
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| Affiliation: | 1. The MOE Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, No. 1200 Cai Lun Road, Zhangjiang Hi‐Tech Park, Shanghai 201203, P.?R. China, (phone: +86‐21‐51322507;2. fax: +86‐21‐51322519);3. Shanghai R&D Center for Standardization of Chinese Medicines, Shanghai 201203, P.?R. China;4. Zhejiang Medical College, University‐Town, Hangzhou, Zhejiang 310053, P.?R. China |
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| Abstract: | Two new diarylheptanoids, katsumains A ( 1 ) and B ( 2 ), and one new kavalactone, katsumadain ( 3 ), together with the three known compounds (4E,6E)‐1,7‐diphenylhepta‐4,6‐dien‐3‐one ( 4 ), (5R,6E)‐1,7‐diphenyl‐5‐hydroxyhept‐6‐en‐3‐one ( 5 ), and cardamonin ( 6 ), were isolated from the seeds of Alpinia katsumadai Hayata . Their structures were elucidated mainly by spectroscopic methods (1D‐ and 2D‐NMR) and by mass spectrometry (HR‐ESI‐MS). Besides, the erroneous nomenclatures for (+)‐linderatin and (+)‐neolinderatin as given in [10] [11] were corrected to be 2′,4′,6′‐trihydroxy‐3′‐[(3R,4R)‐4‐isopropyl‐1‐methylcyclohex‐1‐en‐3‐yl]dihydrochalcone for (+)‐linderatin and 2′,4′,6′‐trihydroxy‐3′,5′‐bis[(3R,4R)‐4‐isopropyl‐1‐methylcyclohex‐1‐en‐3‐yl]dihydrochalcone for (+)‐neolinderatin, respectively. |
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| Keywords: | Alpinia katsumadai Diarylheptanoids Katsumains A and B Katsumadain |
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