Taxonomy: Physicochemical and Pharmacological Properties of Sesquiterpene Esters – The Bicyclic Sesquiterpene Esters – Bicyclogermacranes – Monoesters
Biological sources: Plagiochila yokogurensis Steph. [1, 2]; P. trabeculata Steph. [2, 3]; P. asplenioides (L.) Dum., P. fruticosa Mitt., P. ovalifolia Mitt., P. orbicularis (Hatt.) Hatt., P. porelloides (Torr. ex Nees) Lindenb. [2]
C17H26O2: 262.1933
[α]D −13.7° (c 0.73, CHCl3) [1]
IR (CHCl3): 1730, 1250, 1210, 1150, 1040, 1020, 1000, 865, 850 [1]
MS: 262 [M]+ (10), 203 (43), 202, 159 (43), 152 (40), 137 (39), 133 (35), 132 (46), 123 (49), 121 (54), 119 (42), 109 (100), 105 (32), 95 (44), 91 (35), 43 (88) [1]
GC-MS [2]
TLC: n-hexane – EtOAc (4:1), C6H6 – EtOAc (4:1 and 1:1), detection 30% H2SO4 and UV light (254 nm) [2]
1 H NMR (60 and 90 MHz, CDCl3, TMS): 1.03 (3H, s, H-12), 1.08 (3H, s, H-13), 1.46 (3H, d, J = 2, H-14), 1.67 (3H, d, J = 2, H-15), 2.00 (3H, s, OAc), 2.31 (2H, d, J = 10, H-2), 4.63 (1H, br d, J = 10, H-5), 4.96 (1H, t,...
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References
Y. Asakawa, M. Toyota, T. Takemoto, Phytochemistry 19(10), 2141 (1980)
Y. Asakawa, H. Inoue, M. Toyota, T. Takemoto, Phytochemistry 19(12), 2623 (1980)
M. Toyota, F. Nagashima, Y. Asakawa, Phytochemistry 27(7), 2161 (1988)
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(2013). 3β-Acetoxy-bicyclogermacrene. In: Azimova, S.S., Saidkhodzhaev, A.I. (eds) Natural Compounds. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0539-9_795
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