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Fatty acid
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Upper classes: LB LBF

Chlorovulone I
Structural Information
Systematic Name Methyl- (cis-5,trans-7) -7- [ 4R-chloro-2-hydroxy-2- (cis-2-octenyl) -5-oxo-3-cyclopentenylidene ] -5-heptenoic acid
Common Name
  • Chlorovulone I
  • Methyl- (5Z,7E) -7- [4R-chloro-2-hydroxy-2- [(2Z-octenyl) -5-oxo-3-cyclopentenylidene] -5-heptenoic acid
Formula C21H29ClO4
Exact Mass 380.175437126
Average Mass 380.90525999999994
Physicochemical Information
Melting Point
Boiling Point
Optical Rotation [ α ]D -1.2°(C 0.17, CHCl3) IguchiKet al.
Refractive Index
Solubility Chlorovulones are soluble in MeOH, EtOH, CHCl3, or hexane.
Source Chlorovulones were isolated from Japanese soft coral, Stolonifer Clavularia viridis Quoy and Gaimard. Iguchi_K et al. Nagaoka_H et al.
Chemical Synthesis Photoisomerization of chlorovulone I (fluoresent lamp, benzene, 40 hr) gave a mixture of chlorovulones I, II and III. Iguchi_K et al.
Biological Activity Chlorovulone I showed the strong antiproliferative and cytotoxic activities in himan promyelocytic leukemia (HL-60) ((IC_{50} 0.01 mu g/ml, cytotoxic effect >0.1 mu g/ml). Honda_A et al. Honda_A et al. Iguchi_K et al.Chlorovulone I was entrapped into lipid microspheres of 0.2 mu m diameter to lipo-drug. Daily treatment with lipo-chlorovulone I (1.6 mg/kg/day, i.p.) on days 1 through 5 markedly prolonged the survival time (135% ILS) of mice inoculated with sarcoma 180 as compared with that of corresponding dose of respective free chlorovulone I. Honda_A et al.
Genetic Information
Spectral Information
Mass Spectra
UV Spectra λ max(EtOH) 243 nm( ε 14600),315 nm( ε 15100) IguchiKet al.
IR Spectra ν max(CHCl3)1705cm-1 IguchiKet al.
NMR Spectra 1H-NMR(400MHz,CDCl3) δ ppm0.88(3H,t,J=7.2Hz),1.30(6H,m),1.80(2H,quint.,J=7.4Hz),1.97(2H,brq,J=7.0Hz),2.35(2H,t,J=7.4Hz),2.42(2H,m),2.67(1H,ddd,J=0.5,7.8,14.2Hz),2.82(1H,ddd,J=0.5,7.5,14.2Hz),3.68(3H,s),5.22(1H,ttd,J=1.5,7.7,10.9Hz),5.54(1H,ttd,J=1.4,8.7,10.9Hz),6.11(1H,tdd,J=7.9,0.9,10.9Hz),6.77(1H,tdd,J=1.5,10.9,12.6Hz),7.21(1H,d,J=0.6Hz),7.33(1H,brd,J=12.6Hz). IguchiKet al.13C-NMR(100MHz,CDCl3) δ ppm13.9(q),22.4(t),24.3(t),27.1(t),27.3(t),29.0(t),31.4(t),33.2(t),33.6(t),51.6(q),77.7(s),121.7(d),123.8(d),127.9(d),134.8(d),136.4(s),137.9(s),143.6(d),154.0(d),173.6(s),187.7(s). IguchiKet al.
Other Spectra CD λ ext(EtOH)( Δ ε )nm 232(+7.6),265(-6.1),360(+3.1). IguchiKet al.
Reported Metabolites, References
Biospecies ID Compound Name Reference Comment
n.a. LBF20406CV12 See above. Honda_A et al. 1987
n.a. LBF20406CV12 See above. Honda_A et al. 1988
n.a. LBF20406CV12 See above. Honda_A et al. 1988
n.a. LBF20406CV12 See above. Iguchi_K et al. 1986
n.a. LBF20406CV12 See above. Iguchi_K et al. 1985
n.a. LBF20406CV12 See above. Nagaoka_H et al. 1986

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