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25,26-DIDEHYDROPONASTERONE A

Year of first isolation: 2009
Formula:C27H42O6
Molecular weight:462
Occurence in plants:
Klaseopsis chinensis [Compositae] » Images of Klaseopsis chinensis Wikipedia: Klaseopsis chinensis [Compositae]
Occurence in animals:
 
25,26-DIDEHYDROPONASTERONE A

STRUCTURE DESCRIPTORS

Canonical SMILESCC(=C)CCC(C(C)(C1CCC2(C1(CCC3C2=CC(=O)C4C3(CC(C(C4)O)O)C)C)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)C)C » JSMol: View in 3D
IUPAC Name(2S,3R,5R,9R,10R,13R,14S,17S)-17-[(2R,3R)-2,3-dihydroxy-6-methylhept-6-en-2-yl]-2,3,14-trihydroxy-10,13-dimethyl-2,3,4,5,9,11,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-6-one
CAS-RN 
PubChem CID11730260
InChiKey
[ ChemIDPlus: search ]
WIBVTMSKFSKIMO-JJJZTNILSA-N
InChIInChI=1S/C27H42O6/c1-15(2)6-7-23(31)26(5,32)22-9-11-27(33)17-12-19(28)18-13-20(29)21(30)14-24(18,3)16(17)8-10-25(22,27)4/h12,16,18,20-23,29-33H,1,6-11,13-14H2,2-5H3/t16-,18-,20+,21-,22-,23+,24+,25+,26+,27+/m0/s1

MASS SPECTRUM

EI-MS m/z (relative intensity %)
CI-MS (NH3) m/z
ESI-MS (negative mode) m/z461 [M-H]-, 521 [M+CH3COO]-, 559 [M+HSO4]-

CARBON NMR

PROTON NMR

C5D5N
0138.27
0268.39*
0368.33*
0432.72
0551.67
06203.70
07121.96
08166.31
0934.72
1038.94
1121.88
1232.28
1348.37
1484.44
1532.03
1621.39
1750.30
1818.13
1924.72
2076.95
2121.68
2276.31
2330.88
2436.08
25146.49
26110.59
2722.87
C5D5N
01-Ha2.165 (m)
01-He1.923 (m)
02-Ha4.175 (br, d, 10.4)
03-He4.228 (br, s)
04-Ha 
04-He 
05-H3.011 (dd, 3.6, 12.2)
07-H6.257 (d, 2.4)
09-H3.597 (m)
11-Ha 
11-He 
12-Ha 
12-He 
15-Ha 
15-Hb 
16-Ha 
16-Hb 
17-H2.924 (br, t, 9.0)
18-Me1.221 (s)
19-Me1.075 (s)
21-Me1.575 (s)
22-H3.840 (br, d, 10)
23-Ha 
23-Hb 
24-Ha2.277 (m)
24-Hb2.568 (m)
26-Ha4.754 (br, s)
26-Hb4.791 (br, s)
27-Me1.676 (s)
[OH]4.791 (s), 5.930 (s), 6.032 (2H, br, s), 6.302 (s)

PHYSICAL PROPERTIES

M.P.°C ;
[α]D25+45 ° (c 0.006; MeOH)
IR (KBr) ν max (cm-1)3377, 2945, 1646, 1445, 1380, 1356, 1062, 892, 875, 685, 616
UV (EtOH) λ max (log ε)240.8 () ;

CHROMATOGRAPHY

HPLC
GLC
HPTLC
TLC

BIOLOGICAL ACTIVITIES

 

REFERENCES

First isolationLING, T. et al. (2009) Biochem. Syst. Ecol. 37, 49-51 Search more

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