New physalins from Physalis angulata and Physalis lancifolia. Structure and reactions of physalins D,I, G and K |
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| Authors: | L.Ramachandra Row K.Sambi Reddy N.Subrahmanya Sarma Teruo Matsuura Ruka Nakashima |
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| Affiliation: | 1. Department of Chemistry, Andhra University, Waltair 530 003 India;2. Department of Synthetic Chemistry, Faculty of Engineering, Kyoto University, Yoshida, Kyoto 606 Japan |
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| Abstract: | The structures of physalins I, G and K are established respectively as 5,6-dihydro-5α-methoxy-6β-hydroxy, 4,5-dehydro-5,6-dihydro-4β-hydroxy and 5,6-dihydro-4α,5α-epoxy-6α-hydroxy derivatives of physalin B. The chemistry of physalin D, and the synthesis of physalins D and I from physalin F and physalin K from physalin G are described. |
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| Keywords: | Solanaceae physalins D, I, G and K structural elucidation. |
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