Planta Medica International Open 2017; 4(S 01): S1-S202
DOI: 10.1055/s-0037-1608214
Poster Session
Georg Thieme Verlag KG Stuttgart · New York

Polyalongirin A-B, two novel linked compounds from the twigs of Polyalthia longifolia

L Yun-Sheng
1   Department of Biological Science and Technology, Meiho University, Pingtung, Taiwan
,
G Chia-Yi
2   Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung, Taiwan
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Publikationsverlauf

Publikationsdatum:
24. Oktober 2017 (online)

 

Two novel linked compounds, Polyalongirin A (1) and Polyalongirin B (2), have been isolated from the twigs of Taiwanese Polyalthia longifolia. They were composed of a clerodane diterpene linked to an aprophine alkaloid, is an unprecedented natural N-1 and C-16 linked compound. The stuctures of 1 and 2 and their absolute configurations were elucidated by detail analysis of spectroscopic, including 1D and 2D NMR (1 H, 13C, 1 H – 1 H COSY, HMQC, HMBC and NOESY) spectroscopic data and Kappa CCD Detector.

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Fig. 1