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24(28)-DEHYDROMAKISTERONE A

Year of first isolation: 1978
Formula:C28H44O7
Molecular weight:492
Occurence in plants:
Rhaponticum integrifolium [Asteraceae] » Images of Rhaponticum integrifolium Wikipedia: Rhaponticum integrifolium [Asteraceae]
Leuzea carthamoides [Asteraceae] » Images of Leuzea carthamoides Wikipedia: Leuzea carthamoides [Asteraceae]
Diploclisia glaucescens [Menispermaceae] » Images of Diploclisia glaucescens Wikipedia: Diploclisia glaucescens [Menispermaceae]
Occurence in animals:
 
24(28)-DEHYDROMAKISTERONE A

STRUCTURE DESCRIPTORS

Canonical SMILESCC12CCC3C(=CC(=O)C4C3(CC(C(C4)O)O)C)C1(CCC2C(C)(C(CC(=C)C(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](CC(=C)C(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,3R)-2,3,6-trihydroxy-6-methyl-5-methylideneheptan-2-yl]-2,3,4,5,9,11,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-6-one
CAS-RN 
PubChem CID13889301
InChiKey
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XTSYLJLNVWBIFH-IJYGRGDZSA-N
InChIInChI=1S/C28H44O7/c1-15(24(2,3)33)11-23(32)27(6,34)22-8-10-28(35)17-12-19(29)18-13-20(30)21(31)14-25(18,4)16(17)7-9-26(22,28)5/h12,16,18,20-23,30-35H,1,7-11,13-14H2,2-6H3/t16-,18-,20+,21-,22-,23+,25+,26+,27+,28+/m0/s1

MASS SPECTRUM

CI-MS (NH3) m/z510 (M+H+NH3)+, 493 (M+H)+, ...
EI-MS m/z (relative intensity %)474 (M-18)+(3), 456 (11), 438 (15), 363 (66), 345 (100), 327 (47), 309 (13), 300 (26), 173 (17), 113 (37), 111 (55), 97 (52), 95 (63), 93 (35), 83 (91), 71 (62), 69 (62).
HR-MS 

CARBON NMR

PROTON NMR

C5D5N
0138.1 (t )
0268.1 (d )
0368.1 (d )
0432.5 (t )
0551.4 (d )
06203.3 (s )
07121.7 (d )
08166.0 (s )
0934.6 (d )
1038.7 (s )
1121.2 (t )
1231.9 (t )
1348.2 (s )
1484.2 (s )
1532.1 (t )
1621.5 (t )
1750.1 (d )
1817.9 (q )
1924.5 (q )
2076.8 (s )
2121.6 (q )
2278.0 (d )
2334.9 (t )
24156.2 (s )
2572.2 (s )
2630.2 (q )*
2730.9 (q )*
28109.6 (t )
CD3OD
0137.41
0268.72
0368.53
0432.84
0551.80
06206.42
07122.16
08167.88
0935.13
1039.27
1121.55
1232.51
1349.0*
1485.28
1531.78
1621.55
1750.50
1818.04
1924.40
2078.04
2121.02
2277.81
2334.63
24155.36
2573.61
2629.76
2730.22
28110.38
CD3OD
01-Ha1.43 (dd, 13.4; 12.0)
01-Hb1.80 (dd, 13.4; 4.2)
02-Ha3.84 (ddd, 12.0; 4.2; 3.0)
03-He3.95 (q, 3; 3; 3)
04-Ha1.73
04-He1.70
05-H2.39 (dd, 12.6; 4.4)
07-H5.82 (d, 2.6)
09-Ha3.16 (ddd, 11.5; 7.0; 2.6)
11-Ha1.70
11-He1.82
12-Ha2.14
12-He1.89
15-Ha1.98
15-Hb1.61
16-Ha2.04
16-Hb1.80
17-H2.42 (dd, 9.4; 8.0)
18-Me0.901 (s )
19-Me0.971 (s )
21-Me1.234 (s )
22-Hb3.60 (d,d 10.7; 2.0)
23-Ha2.14 (dd, 14.4; 10.7)
23-Hb2.39 (dd, 14.4; 2.0)
26-Me1.321 (s )
27-Me1.375 (s )
28 =CH24.96 (b), 5.13 (b)
C5D5N
01-Ha 
01-Hb 
02-Ha3.75-4.20 (m )
03-He3.75-4.20 (m )
04-Ha 
04-He 
05-H 
07-H6.08
09-Ha3.45
11-Ha 
11-He 
12-Ha 
12-He 
15-Ha 
15-Hb 
16-Ha 
16-Hb 
17-H 
18-Me1.08 (s )
19-Me0.95 (s )
21-Me1.46 (s )
22-Hb 
23-Ha 
23-Hb 
26-Me1.40 (s )
27-Me1.46 (s )
28 =CH25.14, 4.97

PHYSICAL PROPERTIES

M.P.244-246 °C ;
[α]D20+54.4 ? 2° (c 0.37; MeOH)
IR (KBr) ν max (cm-1)3300-3500 (OH), 1665
UV (EtOH) λ max (log ε)245 (4.15) ;

CHROMATOGRAPHY

HPTLC 
TLCRf 0.44 (EtOAc-MeOH-NH4OH 85:10:5); Rf 0.34 (CH2Cl2-EtOH 85:15).
HPLCNP-HPLC, (Zorbax-Sil) Ret 22.0 min (CH2Cl2-iPrOH-H2O, 125:25:2) (20E 53.2 min). RP-HPLC, (Spherisorb-5ODS2) Ret 8.6 min (solvent ACN-1? TFA in H2O 23:77 (v/v) (20E 5.5 min).

BIOLOGICAL ACTIVITIES

Drosophila melanogaster BII cell assay: EC50 = 4.0 x 10-9M
Galleria mellonella in vivo assay: ED50 = 12.5 ug/g
Sarcophaga bullata in vivo assay: ED50 = 10.4 ug/g

REFERENCES

First isolationBALTAYEV, U.A. et al. (1978) Khim. Prir. Soedin. 463-465 Search more
GeneralMILLER, R.W. et al. (1985) Planta Med. 46, 40-42 Search more
GeneralGIRAULT, J.-P. et al. (1988) Phytochemistry 27, 737-741 Search more
BioactivitiesSLÁMA, K. et al. (1993) Insect Biochem. Molec. Biol. 23, 181-185 Search more
GeneralKUSAMBA, C. et al. (1995) Fitoterapia LXVI, 175-178 Search more
BioactivitiesDINAN, L. et al. (1999) J. Computer-aided Mol. Design 13, 185-207 Search more
Struct. analysisBUDĚŠÍNSKÝ, M. et al. (2008) Steroids 73, 502-514 Search more

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