2011•MoleculesOpen access

Soulamarin, a New Coumarin from Stem Bark of Calophyllum soulattri

Gwendoline Cheng Lian Ee, Siau Hui Mah, Soek Sin Teh, Mawardi Rahmani, Rusea Go, Yun Hin Taufiq‐Yap

Abstract

The extracts of the stem bark of Calophyllum soulattri gave a new pyranocoumarin, soulamarin (1), together with five other xanthones caloxanthone B (2), caloxanthone C (3), macluraxanthone (4), trapezifolixanthone (5) and brasixanthone B (6) one common triterpene, friedelin (7), and the steroidal triterpene stigmasterol (8). The structures of these compounds were established based on spectral evidence (1D and 2D NMR).

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Key concepts: Friedelin, Triterpene, Stigmasterol, Coumarin, Bark (sound), Chemistry, Traditional medicine, Stereochemistry