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- Title
Two New and Four Known Triterpenoids from Boswellia sacra Fluckiger.
- Authors
Ali, Liaqat; Hussain, Javid; Al-Rawahi, Ahmed; Al-Harrasi, Ahmed
- Abstract
Two new O-acetyl derivatives of pentacyclic triterpenic acids, 3α-acetoxyurs-5:12-dien-24-oic acid (1) and 3α-acetoxylup-12:20 (29)-dien-24-oic acid (2) were isolated from Omani frankincense of Boswellia sacra Flueckiger along with four known compounds: commic acid-D (3), 9,11-dehydro-β-boswellic acid (4), 3β-Hydroxy-11-oxours-12-ene (5), and 11β-Hydroxy-3-oxours-12-ene (6). The structures of new compounds 1 and 2 were elucidated on the basis of detailed mass and NMR spectroscopic analysis using ¹H NMR, 13C NMR, HMQC, HMBC, COSY, and HREIMS techniques. The relative configurations of 1 and 2 were assigned by comparative analysis of the NMR spectral data with the related known triterpenoids together with NOESY experiments. The structures of the known compounds 3-6 were confirmed by the comparative analysis of the reported mass and NMR data.
- Subjects
TRITERPENOIDS; BOSWELLIA; NUCLEAR magnetic resonance; COMPARATIVE studies; DATA analysis; HIGH performance liquid chromatography
- Publication
Records of Natural Products, 2014, Vol 8, Issue 4, p407
- ISSN
1307-6167
- Publication type
Article