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ISOCYASTERONE [cf. 25-EPI-CYASTERONE]

Year of first report:1971
Formula:C29H44O8
Molecular weight:520
Occurence in plants:
Cyathula capitata [Amaranthaceae] » Images of Cyathula capitata Wikipedia: <br />
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Occurence in animals:
 
ISOCYASTERONE [cf. 25-EPI-CYASTERONE]

MASS SPECTRUM

CI-MS (NH3) m/z 
EI-MS m/z502 (M-18)+, ?, 363, 345, 327, 201, 183, 157, 113
HR-MS 

CARBON NMR

PROTON NMR

C5D5N
01 
02 
03 
04 
05 
06 
07 
08 
09 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
28 
29 
CDCl3
01-Ha 
02-Ha ~ 5.05
03-He ~ 5.33 (ddd )
04-Ha 
04-He 
05-H 
07-H5.86 (d )
09-Ha 
11-Ha 
11-He 
12-Ha 
12-He 
15-Ha 
15-Hb 
16-Ha 
16-Hb 
17-H 
18-Me0.85 (s )
19-Me1.02 (s )
21-Me1.28 (s )
22-H ~ 4.99
23-Ha 
24-Ha 
24-Hb 
25-H 
26-Me--
27-Me1.22 (d )
28-H4.64 (dq )
29-Me1.42 (d )
C5D5N
01-Ha 
02-Ha 
03-He 
04-Ha 
04-He 
05-H 
07-H6.16 (d )
09-Ha 
11-Ha 
11-He 
12-Ha 
12-He 
15-Ha 
15-Hb 
16-Ha 
16-Hb 
17-H 
18-Me1.16 (s )
19-Me1.04 (s )
21-Me1.52 (s )
22-H 
23-Ha 
24-Ha 
24-Hb 
25-H 
26-Me--
27-Me1.24 (d )
28-H 
29-Me1.19 (d )

PHYSICAL PROPERTIES

M.P.amorphous
[α]D20+65.3 ░ (c ; MeOH)
IR (KBr) ν max (cm-1)3425, 1755 (?-lactone), 1650
UV (MeOH) λ max (log ε)242 (4.02)

CHROMATOGRAPHY

HPTLC 
TLC 
GLC 
HPLC 

BIOLOGICAL ACTIVITIES

 

REFERENCES

First isolationHIKINO, H. et al. (1971) Chem. Pharm. Bull. 19, 433-435 Search more
GeneralHIKINO, H. et al. (1971) Phytochemistry 10, 3173-3178 Search more

see Important notice
© UniversitÚ 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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