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2-DEHYDROAJUGALACTONE

Year of first isolation: 1996
Formula:C29H38O8
Molecular weight:514
Occurence in plants:
Ajuga reptans var. atropurpurea [Lamiaceae (alt. Labiatae)] » Images of Ajuga reptans var. atropurpurea Wikipedia: Ajuga reptans var. atropurpurea [Lamiaceae (alt. Labiatae)]
Occurence in animals:
 
2-DEHYDROAJUGALACTONE

STRUCTURE DESCRIPTORS

Canonical SMILESCCC1=C(C(=O)OC(C1)C(C)(C2CCC3(C2(C(=O)CC4C3=CC(=O)C5C4(CC(=O)C(C5)O)C)C)O)O)C
Isomeric SMILES
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C1[C@]2([C@@H](C[C@H](C1=O)O)C(=O)C=C1[C@@H]2CC(=O)[C@]2([C@]1(CC[C@@H]2[C@](C)([C@H]1CC(=C(C(=O)O1)C)CC)O)O)C)C » JSMol: View in 3D
IUPAC Name(3R,10R,13R,14R,17S)-17-[(1S)-1-(4-ethyl-5-methyl-6-oxo-2,3-dihydropyran-2-yl)-1-hydroxyethyl]-3,14-dihydroxy-10,13-dimethyl-3,4,5,9,11,15,16,17-octahydro-1H-cyclopenta[a]phenanthrene-2,6,12-trione
CAS-RN 
PubChem CID11168240
InChiKey
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KTLBZAJJBVSPKH-UOAVCPECSA-N
InChIInChI=1S/C29H38O8/c1-6-15-9-24(37-25(34)14(15)2)28(5,35)22-7-8-29(36)17-10-19(30)18-11-20(31)21(32)13-26(18,3)16(17)12-23(33)27(22,29)4/h10,16,18,20,22,24,31,35-36H,6-9,11-13H2,1-5H3/t16?,18?,20-,22+,24?,26-,27+,28+,29-/m1/s1

MASS SPECTRUM

CI-MS (NH3) m/z?MS (Thermospray) m/z (relative intensity %): 532 (M+NH4)+ (100), 515 (M+H) (38), 514 (M)+ (39), 497 (M+H-H2O) (48)
EI-MS m/z (relative intensity %)?
R-MS 

CARBON NMR

PROTON NMR

C5D5N
0148.9
02209.4
0374.6
0435.7
0555.1
06199.6
07122.9
08166.8
0938.3
1044.2
1136.4
12209.2
1361.6
1488.8
1531.9
1621.0
1743.9
1817.4
1922.3
2074.9
2122.1
2283.1
2330.0
24154.3
25121.1
26161.2
2712.2
2827.0
2911.5
C5D5N
01-Ha2.44
01-He1.88
02-Ha?
03-He4.59 (dd, 11.1, 7.5)
04-Ha2.46
04-He1.87
05-H3.00 (dd, 13.5, 4.3)
07-H6.39 (d, 2.7)
09-H3.73 (ddd, 9.3, 9.2, 2.7)
11-Hab2.88 (cs, 2H)
15-Ha 
15-Hb 
16-Ha2.58
16-Hb2.04
17-H3.43 (br t, 9.0)
18-Me1.50 (s)
19-Me1.24 (s)
21-Me1.66 (s)
22-H4.44 (dd, 13.0, 3.5)
23-Ha2.47
23-Hb2.22 (dd, 17.4, 3.0)
25-H?
27-Me1.87 (s)
28-Ha1.86
29-Me0.68 (t, 7.5)

PHYSICAL PROPERTIES

M.P. 
[α]D20 
IR (KBr) ν max (cm-1)3427 (OH), 1716 (delta-lactone), 1684 (cyclohexenone)
UV (EtOH) λ max (log ε) 

CHROMATOGRAPHY

HPTLC 
TLC 
GLC 
HPLCRP-HPLC, column Tracer 30x0.78 cm packed with Spherisorb-ODS2 10?m, solvent ACN-H2O (20:80), flow-rate 3 mL.min-1, 23°C, Ret 42.7 min.

BIOLOGICAL ACTIVITIES

 

REFERENCES

First isolationCALGANO, M.P. et al. (1996) Tetrahedron 52, 10137-10146 Search more

see Important notice
© Université Pierre & Marie Curie, Paris 6, France
© Institute of Organic Chemistry and Biochemistry, Academy of Sciences, Prague, Czech Republic
© Institut National de la Recherche Agronomique, Versailles, France
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