New Limonoids from the Seeds of a Krishna Mangrove,Xylocarpus granatum |
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| Authors: | Hongliang Chen Jing Zhang Min‐Yi Li Tirumani Satyanandamurty Jun Wu |
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| Institution: | 1. College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, P.?R. China, (phone: +86‐431‐84533087‐8011;2. fax: +86‐431‐84533086);3. Key Laboratory of Marine Bio‐resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, P.?R. China, (phone: +86‐20‐84458442;4. fax: +86‐20‐84451672);5. Government Degree College at Amadala valasa, Srikakulam District, Andhra Pradesh, 532185, India |
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| Abstract: | Two new mexicanolides, named granatumins H and I ( 1 and 2 , resp.), and two phragmalins, named granatumins J and K ( 3 and 4 , resp.), were isolated from the seeds of an Indian mangrove, Xylocarpus moluccensis, collected from the swamps of Krishna estuary, Andhra Pradesh. The structures of these limonoids were established on the basis of spectroscopic data. Granatumin J ( 3 ) is a highly oxidized phragmalin with five AcO groups, whereas granatumin K ( 4 ) is the first phragmalin found in nature with conjugated C(8)?C(30) and C(14)?C(15) bonds. |
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| Keywords: | Xylocarpus granatum Mangroves Mexicanolides Granatumins H – K Phragmalins |
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