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20-HYDROXYECDYSONE 22-BENZOATE

Year of first isolation: 1986
Formula:C34H48O8
Molecular weight:584
Occurence in plants:
Silene scabrifolia [Caryophyllaceae] » Images of Silene scabrifolia Wikipedia: Silene scabrifolia [Caryophyllaceae]
Silene otites [Caryophyllaceae] » Images of Silene otites Wikipedia: Silene otites [Caryophyllaceae]
Silene tatarica [Caryophyllaceae] » Images of Silene tatarica Wikipedia: Silene tatarica [Caryophyllaceae]
Occurence in animals:
 
20-HYDROXYECDYSONE 22-BENZOATE

STRUCTURE DESCRIPTORS

Canonical SMILESCC12CCC3C(=CC(=O)C4C3(CC(C(C4)O)O)C)C1(CCC2C(C)(C(CCC(C)(C)O)OC(=O)C5=CC=CC=C5)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)OC(=O)c1ccccc1)O)O)C)C » JSMol: View in 3D
IUPAC Name[(2R,3R)-2,6-dihydroxy-6-methyl-2-[(2S,3R,5R,9R,10R,13R,14S,17S)-2,3,14-trihydroxy-10,13-dimethyl-6-oxo-2,3,4,5,9,11,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-17-yl]heptan-3-yl] benzoate
CAS-RN 
PubChem CID11753556
InChiKey
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GHZYCHXISZLQFT-WSZYVKLESA-N
InChIInChI=1S/C34H48O8/c1-30(2,39)14-13-28(42-29(38)20-9-7-6-8-10-20)33(5,40)27-12-16-34(41)22-17-24(35)23-18-25(36)26(37)19-31(23,3)21(22)11-15-32(27,34)4/h6-10,17,21,23,25-28,36-37,39-41H,11-16,18-19H2,1-5H3/t21-,23-,25+,26-,27-,28+,31+,32+,33+,34+/m0/s1

MASS SPECTRUM

CI-MS (NH3) m/z585 (MH)+, 567, 549, 463, 445, 427, 363, 345
EI-MS m/z (relative intensity %)584 (M)+ (0.02), 566 (0.1), 548 (0.2), 533 (0.4), 530 (0.3), 462 (0.8), 445 (7), 444 (23), 429 (23), 427 (39), 426 (84), 411 (56), 408 (23), 393 (24), 375 (24), 363 (39), 357 (24), 345 (24), 329 (24), 327 (23), 315 (24), 301 (56), 300 (54), 251 (39), 250 (84), 249 (80), 232 (24), 231 (24), 152 (28), 126 (81), 122 (81), 109 (56), 105 (100), 99 (52), 81 (52), 77 (53), 69 (52), 59 (52), 51 (53), 43 (53).

CARBON NMR

PROTON NMR

C5D5N
0137.9
0268.1
0368.1
0432.4
0551.3
06203.4
07121.8
08165.8
0934.4
1038.7
1121.6
1231.7
1348.2
1484.1
1532.0
1622.5
1750.6
1817.8
1924.4
2076.6
2121.1
2281.3
2326.2
2441.8
2569.2
2629.6
2730.0
contin. 3', 5' 128.7; 4´ 133.0)
O-C=O167.0 (1' 131.8; 2', 6' 130.0;
CD3OD
01-Ha1.45
01-He 
02-Ha3.84 (ddd, 12, 3, 3)
03-He3.94 (ddd, 3, 3, 3)
04-Ha 
04-He 
05-H2.38 (dd, 5, 12)
07-H5.81 (d, 2)
09-Ha3.14 (m, w1/2=22)
11-Ha 
11-He 
12-Ha2.17 (ddd, 13, 13, 5)
12-He 
15-Ha 
15-Hb 
16-Ha 
16-Hb 
17-H2.48 (t, 8.5)
18-Me0.89 (s )
19-Me0.96 (s )
21-Me1.42 (s )
22-H5.15 (dd, 12, 2)
23-Ha 
23-Hb 
24-Ha 
24-Hb 
26-Me1.15 (s )
27-Me1.16 (s )
C6H5-CO- m7.49 (t, 7) (2H)
C6H5-CO- o8.08 (t, 7) (2H)
C6H5-CO- p7.61 (t, 7) (1H)
C5D5N
01-Ha 
01-He 
02-Ha4.0-4.3
03-He4.0-4.3
04-Ha 
04-He 
05-H 
07-H6.22
09-Ha3.60
11-Ha 
11-He 
12-Ha 
12-He 
15-Ha 
15-Hb 
16-Ha 
16-Hb 
17-H 
18-Me1.21
19-Me1.10
21-Me1.78
22-H5.76
23-Ha 
23-Hb 
24-Ha 
24-Hb 
26-Me1.32
27-Me1.32
C6H5-CO- m7.40
C6H5-CO- o8.27
C6H5-CO- p7,40

PHYSICAL PROPERTIES

M.P.202-205 °C
[α]D20+ 45.0 ? 2° (c 1.1; MeOH)
IR (KBr) ν max (cm-1)3420-3470 (OH), 1660 (C=O), 1710, 1285 (ester), 1610, 1587,
UV (EtOH) λ max (log ε)235 (4.36)

CHROMATOGRAPHY

HPTLC 
TLCRf 0.22 (EtOAc-MeOH-NH4OH, 85:10:5) (20E 0.18); Rf 0.28 (CH2Cl2-EtOH, 85:15) (20E 0.15)
GLC 
HPLC1- Retention time 10.9 min [ Zorbax-Sil 250 mm x 4.6 mm i.d., solvent CH2Cl2-iPrOH-H2O 125:40:3 v/v/v, flow-rate 1 ml.min-1] (20E : 16.8 min) 2- Retention time 22.8 min [ Zorbax-Sil 250 mm x 4.6 mm i.d., solvent CH2Cl2-iPrOH-H2O 125:25:2 v/v/v, flow-rate 1 ml.min-1] (20E 37.4 min)

BIOLOGICAL ACTIVITIES

Drosophila melanogaster BII cell assay: EC50 = 4.3 x 10-9M
Galleria mellonella in vivo assay: ED50 = 7.8 ug/g
Sarcophaga bullata in vivo assay: ED50 = 2.6 ug/g

REFERENCES

First isolationSAATOV, Z. et al. (1986) Khim. Prir. Soedin., 77-80 Search more
GeneralSAATOV, Z. et al. (1990) Khim. Prir. Soedin., 363-366 Search more
GeneralGIRAULT, J.-P. et al. (1990) J. Nat. Prod. 53, 279-293 Search more
BioactivitiesSLÁMA, K. et al. (1993) Insect Biochem. Molec. Biol. 23, 181-185 Search more
BioactivitiesRAVI, M. et al. (2001) J. Chem. Inf. Comput. Sci. 41, 1587-1604 Search more

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© Institute of Organic Chemistry and Biochemistry, Academy of Sciences, Prague, Czech Republic
© Institut National de la Recherche Agronomique, Versailles, France
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