Taxonomy: Physicochemical and Pharmacological Properties of Sesquiterpene Esters – The Bicyclic Sesquiterpene Esters – Eremophilanes – Furanoeremophilanes – Diesters
Biological sources: Othonna natalensis Sch. Bip. [1]; O. leptodactyla Harv. [2]; Hertia pallens Kuntze. [3]
C25H34O7: 446.2305
Mp: colorless oil [1]
IR (CCl4): 1735, 1720, 1650 [1]
MS: 446.230 [M]+ (1) (calc. for C25H34O7 446.230, 358 (12), 83 (100) [1]
1 H NMR (270 MHz, CDCl3): 0.99 (3H, s, H-14), 2.25 (1H, m, H-10), 2.30 (1H, br d, J = 17, H-9b), 2.92 (1H, dd, J = 17; 8, H-9a), 2.99 (1H, d, J = 5, H-4), 5.50 (1H, ddd, J = 10; 5; 5, H-3), 6.33 (1H, s, H-6), 6.31 (1H, br s, H-2″ in OiBu), 6.41 (1H, br s, H-3′ in OAng) [1]
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References
F. Bohlmann, K.-H. Knoll, Phytochemistry 17(3), 461 (1978)
J. Jakupovic, V.P. Patnak, M. Grenz, S. Banerjee, C. Wolfrum, R.N. Baruah, F. Bohlmann, Phytochemistry 26(4), 1049 (1987)
J. Jakupovic, F. Bohlmann, M. Grenz, Phytochemistry 28(11), 3231 (1989)
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(2013). 3β-Angeloyloxy-6β-isobutyroyloxy-10βH-furanoeremophilan-15-oic Acid Methyl Ester. In: Azimova, S.S., Saidkhodzhaev, A.I. (eds) Natural Compounds. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0539-9_1357
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