Limonoids and protolimonoids from the fruits of Phellodendron amurense
1992
Kishi, K. | Yoshikawa, K. | Arihara, S.
Two novel limonoids, named kihadalactone A and B, have been isolated from the fresh fruits of Phellodendron amurense, along with seven tirucallanes triterpenoids, niloticin, dihydroniloticin, niloticin acetate, piscidinol A, hispidol B, bourjotinolone A, and hispidone. Their structures were established on the basis of spectral and chemical evidence. Further NMR spectral analysis of the tirucallanes showed that the reported shifts of C-13 and C-14 should be revised.
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