LBF20306CV02

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Upper classes: LB LBF



Preclavulone lactone II
LBF20306CV02.png
Structural Information
Systematic Name 4R- {trans-3- [ (1R,2S) -2- (cis-2-Octenyl) -5-oxo-3-cyclopentenyl] -1-propenyl} -4-butanolide
Common Name
  • Preclavulone lactone II
  • 4R- {3E- [ (1R,2S) -2- (2Z-Octenyl) -5-oxo-3-cyclopentenyl] -1-propenyl}-4-butanolide
Symbol
Formula C20H28O3
Exact Mass 316.203844762
Average Mass 316.43452
SMILES C(CC=CC[C@@H]([C@@H]1CC=C[C@@H](C2)OC(=O)C2)C=CC(=O)1)CCC
Physicochemical Information
Melting Point
Boiling Point
Density
Optical Rotation [ α ]D -110° IwashimaMet al.
Refractive Index
Solubility
Source Preclavulone lactones were isolated from Japanese soft coral, Stolonifer Clavularia viridis Quoy and Gaimard. Iwashima_M et al.
Chemical Synthesis
Metabolism Preclavulone lactone may possibly be biosynthesized from preclavulon A. Clavulones may be biosynthesized from preclavulone lactones via clavulolactones by oxygenation at C-12, dehydration between C-7 and C-8, and esterification at C-1 and C-4. Iwashima_M et al.
Biological Activity
Genetic Information
Note
Spectral Information
Mass Spectra
UV Spectra
IR Spectra
NMR Spectra 1H-NMR(500MHz,CDCl3) δ ppm0.89(3H,t,J=7.2Hz),1.2-1.4(6H,m),1.96(1H,m),2.00(2H,brq,J=7.3Hz),2.11(1H,m),2.27(1H,m),2.32(1H,m),2.37(1H,m),2.50(2H,m),2.52(2H,m),2.67(1H,qt,J=2.4,7.0Hz),4.89(1H,q,J=6.7Hz),5.33(1H,brtd,J=7.8,10.9Hz),5.52(1H,brtd,J=7.3,10.9Hz),5.58(1H,brdd,J=6.7,15.2Hz),5.76(1H,brtd,J=7.7,15.2Hz),6.15(1H,dd,J=2.4,5.8Hz),7.58(1H,dd,J=2.4,5.8Hz). IwashimaMet al. 13C-NMR(125MHz,CDCl3) δ ppm14.0,22.5,27.3,28.5,28.7,29.2,31.3,31.5,33.1,46.9,50.2,80.4,125.2,130.1,131.5,133.0,133.1,166.9,176.8,210.6 IwashimaMet al.
Other Spectra
Chromatograms
Reported Metabolites, References
Biospecies ID Compound Name Reference Comment
n.a. LBF20306CV02 See above. Iwashima_M et al. 1997


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