Soulamarin, a New Coumarin from Stem Bark of Calophyllum soulattri

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

Format: Article
Diterbitkan: MDPI AG 2011-11-01

Deskripsi

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).