Elsevier

Phytochemistry

Volume 31, Issue 4, April 1992, Pages 1335-1338
Phytochemistry

Limonoids and protolimonoids from the fruits of Phellodendron amurense

https://doi.org/10.1016/0031-9422(92)80285-MGet rights and content

Abstract

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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