Natural Compounds

2013 Edition
| Editors: Shakhnoza S. Azimova, Ashraf I. Saidkhodzhaev

3α-Isovaleroyloxy-furanoeremophilan-9-one (Euryopsonol-isovalerat)

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-0539-9_1196

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Taxonomy: Physicochemical and Pharmacological Properties of Sesquiterpene Esters – The Bicyclic Sesquiterpene Esters – Eremophilanes – Furanoeremophilanes – Monoesters

Biological sources: Euryops speciosissimum DC [1, 2]

C20H28O4: 332.1988

Mp: 111°C [1]

[α]24 (λ, nm): −49.5° (589), −52° (578), −61° (546), −131° (436), −296° (365) (c 1.72) [1]

IR: 1740, 1690 [1]

MS: 332 [M]+, 247, 230, 85 (100) [1]

1H NMR (CDCl3, TMS): 0.82 (3H, s, H-14), 0.94 (3H, d, J =7, H-15), 1.97 (3H, d, J ≈ 1, H-13), 2.42 (1H, J ≈ 17, H-6b), 2.74 (1H, J ≈ 17, H-6a), 4.73 (1H, ddd, J = 10.5; 10.5 + 4, H-3), 7.34 (1H, q, J ≈ 1, H-12) [1]

References

  1. 1.
    F. Bohlmann, C. Zdero, N. Rao, Chem. Ber. 105, 3523 (1972)CrossRefGoogle Scholar
  2. 2.
    F. Bohlmann, C. Zdero, Phytochemistry 17(7), 1135 (1978)CrossRefGoogle Scholar

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