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Spiroschincarins A–E: Five Spirocyclic Nortriterpenoids from the Fruit of Schisandra incarnata

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Version 2 2017-02-20, 18:04
Version 1 2017-02-16, 18:20
journal contribution
posted on 2017-02-16, 00:00 authored by Jian Song, Ye Liu, Ming Zhou, Hui Cao, Xiao-Gang Peng, Jing-Jing Liang, Xiao-Ya Zhao, Ming Xiang, Han-Li Ruan
Spiroschincarins A–E (15), five novel spirocyclic schinortriterpenoids featuring a unique 1-oxaspiro[6.6]­tridecane motif, were isolated from the fruit of Schisandra incarnata. Their structures with absolute configurations were determined by extensive spectroscopic analyses, single-crystal X-ray diffractions, and experimental ECD (electronic circular dichroism). A hypothetical biogenetic pathway of 15 was postulated.

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