LBF20406CV04

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Upper classes: LB LBF



4-epiclavulone III
LBF20406CV04.png
Structural Information
methyl (4R,5E,7Z) -4-acetoxy-7- [ (R) -2-acetoxy-2- [ (Z) -2-octenyl ] -5-oxo-3-cyclopentenylidene ] -5-heptenoate
  • 4-epiclavulone III
  • methyl (4R,5E,7Z) -4-acetoxy-7- [ (R) -2-acetoxy-2- [ (Z) -2-octenyl ] -5-oxo-3-cyclopentenylidene ] -5-heptenoate
Formula C25H34O7
Exact Mass 446.230453442
Average Mass 446.53326000000004
SMILES O(C(C)=O)[C@@](C1=CC=C[C@H](CCC(OC)=O)OC(C)=O)(CC=CCCCCC)C=CC1=O
Physicochemical Information
[ α ]D -10.0°(C 0.06, CHCl3) IwashimaMet al.
4-Epiclavulones were isolated from Japanese soft coral, Stolonifer Clavularia viridis Quoy and Gaimard. Iwashima_M et al.
4-Epiclavulone III was synthesized from clavulone III. Iwashima_M et al.
Spectral Information
Mass Spectra EIMS m/z 446 (M+). HREIMS m/z 446.2328 for C25H34O7 (M+), calcd 446.2305. IwashimaMet al.
UV Spectra λ E
m
 ax 229 nm(log ε 4.23),295 nm(log ε 4.14) IwashimaMet al.
IR Spectra ν f
m
 ax1738,1698 and 1229cm-1 IwashimaMet al.
NMR Spectra 1H-NMR(500MHz,CDCl3) δ ppm0.88(3H,t,J=7.1Hz),1.21-1.34(6H,m),1.94(2H,q,J=7.3Hz),1.99-2.07(2H,m),2.03(3H,s),2.09(3H,s),2.40(2H,t,J=7.4Hz),2.63(1H,dd,J=7.3,14.2Hz),2.87(1H,dd,J=8.1,14.2Hz),3.68(3H,s),5.21(1H,ddd,J=7.3,8.1,10.9Hz),5.45(1H,dd,J=5.4,5.8Hz),5.53(1H,dt,J=7.3,10.9Hz),6.01(1H,dd,J=5.4,15.6Hz),6.35(1H,d,J=6.1Hz),6.51(1H,d,J=11.3Hz),7.51(1H,d,J=6.1Hz),7.73(1H,ddd,J=1.3,11.3,15.6Hz). IwashimaMet al. 13C-NMR(125MHz,CDCl3) δ ppm14.0,21.0,21.7,22.5,27.4,29.0,29.2,29.7,31.5,35.6,51.7,72.4,85.2,121.3,126.3,133.4,134.7,135.6,136.7,141.0,156.1,169.7,170.2,173.2,194.1. IwashimaMet al.
Other Spectra
Chromatograms
Reported Metabolites, References
Biospecies ID Compound Name Reference Comment
n.a. LBF20406CV04 See above. Iwashima_M et al. 1999