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DOI: 10.1055/s-0035-1546036
Antiplasmodial Isoflavanes and Pterocarpans from Apoplanesia paniculata [*]
Publication History
received 24 February 2015
revised 02 April 2015
accepted 07 April 2015
Publication Date:
27 May 2015 (online)
![](https://www.thieme-connect.de/media/plantamedica/20151213/lookinside/thumbnails/10-1055-s-0035-1546036_pmz0204-1.jpg)
Abstract
Bioassay-guided fractionation of an EtOH extract of the roots of the plant Apoplanesia paniculata (Fabaceae) led to the isolation of the three known compounds amorphaquinone (1), pendulone (2), and melilotocarpan C (3), and the two new pterocarpans 4 and 5. Compounds 1 and 2 exhibited good antiplasmodial activity with IC50 values of 5.7 ± 1.5 and 7.0 ± 0.8 µM, respectively. Compound 3 exhibited weak antiplasmodial activity (41.8 ± 5.2 µM), while compounds 4 and 5 were inactive. Compound 6 was synthesized to confirm the structure of 5, and it showed enhanced antiplasmodial activity (15.8 ± 1.4 µM) compared to its analogues 3–5.
* Dedicated to Professor Dr. Dr. h. c. mult. Adolf Nahrstedt on the occasion of his 75th birthday.
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