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22-EPI-20-HYDROXYECDYSONE

Year of first isolation: 1996
Formula:C27H44O7
Molecular weight:480
Occurence in plants:
Serratula tinctoria [Asteraceae] » Images of Serratula tinctoria Wikipedia: Serratula tinctoria [Asteraceae]
Occurence in animals:
 
22-EPI-20-HYDROXYECDYSONE

STRUCTURE DESCRIPTORS

Canonical SMILESCC12CCC3C(=CC(=O)C4C3(CC(C(C4)O)O)C)C1(CCC2C(C)(C(CCC(C)(C)O)O)O)O
Isomeric SMILES
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C1[C@]2([C@@H](C[C@H]([C@H]1O)O)C(=O)C=C1[C@@H]2CC[C@]2([C@]1(CC[C@@H]2[C@](C)([C@H](CCC(C)(C)O)O)O)O)C)C » JSMol: View in 3D
IUPAC Name(2S,3R,5R,9R,10R,13R,14S,17S)-2,3,14-trihydroxy-10,13-dimethyl-17-[(2R,3S)-2,3,6-trihydroxy-6-methylheptan-2-yl]-2,3,4,5,9,11,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-6-one
CAS-RN 
PubChem CID10767085
InChiKey
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NKDFYOWSKOHCCO-ZPEWUMIJSA-N
InChIInChI=1S/C27H44O7/c1-23(2,32)9-8-22(31)26(5,33)21-7-11-27(34)16-12-18(28)17-13-19(29)20(30)14-24(17,3)15(16)6-10-25(21,27)4/h12,15,17,19-22,29-34H,6-11,13-14H2,1-5H3/t15-,17-,19+,20-,21-,22-,24+,25+,26+,27+/m0/s1

MASS SPECTRUM

CI-MS (NH3) m/z498 (M+H+NH3)+, 481, 463, 445, 427, 403, 380 (M+H+NH3- C22--C27)+, 363, 345
EI-MS m/z (relative intensity %) 
FAB-MS (glycerol) m/z (relative intensity %)481 (M+H)+ (30), 463 (78), 445 (100), 427.6 (36), 411.5 (23), 393 (20), 371 (42), 347 (40), 331 (57), 329 (72), 303 (70), 301 (93)

CARBON NMR

PROTON NMR

D2O
0136.3
0268.3
0368.2
0432.4
0551.4
06 
07122.1
08 
0935.1
1039.1
11 
1232.1
1348.0
1486.3
15 
16 
1750.2
1818.1
1924.2
2078.6
2121.3
2278.6
23 
2441.7
2573.0
2628.3
2729.3
D2O
01-Ha1.4 (t, 13)
01-Hb1.85
02-Ha3.99 (m, w1/2 = 22)
03-He4.07 (m, w1/2 = 8)
04-Ha1.75
04-He1.75
05-H2.34 (t )
07-H5.99 (d, 2.5)
09-Ha3.10 (m, w1/2 = 22)
11-Ha1.75
11-He1.85
12-Ha1.95
12-He 
15-Ha2.05 (m )
15-Hb1.65
16-Ha1.85
16-Hb1.9
17-H2.55 (t )
18-Me0.85 (s )
19-Me1.00 (s )
21-Me1.27 (s )
22-H3.35 (d, 10)
23-Ha1.45
23-Hb1.8
24-Ha1.8
24-Hb1.53
26-Me1.238 (s )
27-Me1.243 (s )
C5D5N
01-Ha 
01-Hb 
02-Ha4.00-4.35
03-He4.00-4.35
04-Ha 
04-He 
05-H2.85-3.15
07-H6.22 (d, 2)
09-Ha3.40-3.75
11-Ha 
11-He 
12-Ha 
12-He 
15-Ha 
15-Hb 
16-Ha 
16-Hb 
17-H3.40-3.75
18-Me1.22 (s )
19-Me1.08 (s )
21-Me1.71 (s )
22-H 
23-Ha 
23-Hb 
24-Ha 
24-Hb 
26-Me1.40 (s )
27-Me1.40 (s )

PHYSICAL PROPERTIES

M.P.259-260 °C
[α]D20 
IR (KBr) ν max (cm-1)1650 (unsaturated CO)
UV (EtOH) λ max (log ε) 

CHROMATOGRAPHY

HPTLC 
TLCRf 0.14, solvent CH2Cl2-EtOH (96%) 85:15 v/v (20E 0.18)
GLC 
HPLCNP-HPLC, Column Zorbax-SIL9.4x250 mm, flow-rate 4 ml.min-1, Ret 26.4 min, Solvent CH2Cl2-iPrOH-H2O 125:40:3 v/v/v, (20E 17.6 min); Ret 16.4 min, Solvent Cyclohexane-iPrOH-H2O 80:40:3 v/v/v, (20E 13.4 min)

BIOLOGICAL ACTIVITIES

Calliphora assay: 0% (20-hydroxyecdysone = 100%)

REFERENCES

GeneralKERB, U. et al. (1968) Tetrahedron Lett. 4277-4280 Search more
BioactivitiesBERGAMASCO, R. et al. (1980) In: Progress in Ecdysone Research (Ed. J.A. Hoffmann), Elsevier/North Holland Biomed. Press, Amsterdam 299-324 Search more
GeneralHEDTMAN, U. et al. (1991) Tetrahedron 47, 3753-3772 Search more
First isolationBÁTHORI, M. et al. (1998) J. Nat. Prod. 61, 415-417 Search more
IdentificationVOKÁČ, K. et al. (2002) Collect. Czech. Chem. Commun. 67, 124-139 Search more

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© 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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