2-{(1S,2S,4aR,8R,8aR)-8-Hydroxy-4a,8-dimethyl-1-[(2E)-2-methylbut-2-enoyloxy]perhydronaphthalen-2-yl}acrylic acid from Sclerorhachis platyrachis
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چکیده
The eudesmane-type terpenoid, C(20)H(30)O(5), isolated from Sclerorhachis platyrachis, has a deca-lin skeleton whose six-membered rings adopt chair conformations. The two methyl substituents occupy axial positions, whereas the other three substituents occupy equatorial positions. The hy-droxy group is an intra-molecular hydrogen-bond donor to the single-bond ester O atom; adjacent mol-ecules are linked through the carb-oxy-lic acid interacting with the hydroxyl group, forming a hydrogen-bonded chain running along the c axis.
منابع مشابه
1-[(2R,4aR,8R,8aR)-8-Hydroxy-4a,8-dimethylperhydronaphthalen-2-yl]ethan-1-one
The title compound, C(14)H(24)O(2), was synthesized from ilicic acid, which was isolated from the aerial part of Inula Viscosa- (L) Aiton [or Dittrichia Viscosa- (L) Greuter]. The mol-ecule contains two fused six-membered rings, which both display a chair conformation. In the crystal, mol-ecules are linked into chains propagating along the b axis by inter-molecular O-H⋯O hydrogen bonds.
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The title compound, C(21)H(25)ClO, was semi-synthesized from isocostic acid, isolated from the aerial part of Inula Viscosa- (L) Aiton [or Dittrichia Viscosa- (L) Greuter]. The cyclo-hexene ring has a half-chair conformation, whereas the cyclo-hexane ring displays a chair conformation.
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