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Volume 2004
Issue 1
10.3390/M366
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Short Note

(3S)-Tosyl-24-methyl-elemo-lanosta-8,24(31)-diene-7,11-dione

by
N. Mazoir
*,
A. Auhmani
,
M. Dakir
,
My. Y. Ait Itto
and
A. Benharref
Laboratoire de Chimie des Substances Naturelles et des Hétérocycles, Université Cadi Ayyad, Faculté des Sciences SemLalia, B.P 2390, Marrakech. Maroc.
*
Author to whom correspondence should be addressed.
Molbank 2004, 2004(1), M366; https://doi.org/10.3390/M366
Submission received: 16 October 2003 / Accepted: 17 February 2004 / Published: 24 February 2004
Versions Notes
Molbank 2004 m366 i001
To a solution of 11 (1g, 1.68mmol) in 20ml of acetone, was added (0.50g, 0.85mmol) of chromic anhydride2. The mixture was maintained at 0°C during 24h, and washed with 20ml of cold water. Extracted with ethyl acetate, the organic layer was dried over Na2SO4 , and evaporated under reduced pressure. The residue was purified on a silica gel column using hexane/EtOAc (98/2) as eluant to give 2 (0.63g, 60%).
Mp: 160-161 °C (Hexane).
MS (EI, 70eV) : 622 (M+.).
1H NMR (300 MHz, CDCl3) d(ppm): 4.15 (dd,J1=12, J2= 4Hz , H-3); 2.43 (s, 3H of tosyle group); 1.22 and 1.25 (2s, 3H-26 , 3H-27); 4.63 and 4.69 (2S, 2H-31).
13C NMR (75 MHz, CDCl3) d(ppm): 89.10 C-3 ; 150.00; 155.00 C8 and C9 ; 199.50; 201.50 C7 and C11; 155.50 C-24 ; 106.50 C-31 ; 121.31 ; 124.36 ; 124.43 ; 126.55, 131.45 and 141.34 (aromatic carbons) IR n(cm-1): 1700 cm-1.

Supplementary materials

Supplementary File 1Supplementary File 2Supplementary File 3

References

  1. Benharref, A.; Lavergne, J.-P. Bull. Soc. Chim. Fr. 1985, 965.
  2. Clayton, H.; Heathcock, C.M.; Matthew, F.S.; Thanim, U. J. Org. Chem. 1984, 49, 3264–3274.

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MDPI and ACS Style

Mazoir, N.; Auhmani, A.; Dakir, M.; Itto, M.Y.A.; Benharref, A. (3S)-Tosyl-24-methyl-elemo-lanosta-8,24(31)-diene-7,11-dione. Molbank 2004, 2004, M366. https://doi.org/10.3390/M366

AMA Style

Mazoir N, Auhmani A, Dakir M, Itto MYA, Benharref A. (3S)-Tosyl-24-methyl-elemo-lanosta-8,24(31)-diene-7,11-dione. Molbank. 2004; 2004(1):M366. https://doi.org/10.3390/M366

Chicago/Turabian Style

Mazoir, N., A. Auhmani, M. Dakir, My. Y. Ait Itto, and A. Benharref. 2004. "(3S)-Tosyl-24-methyl-elemo-lanosta-8,24(31)-diene-7,11-dione" Molbank 2004, no. 1: M366. https://doi.org/10.3390/M366

APA Style

Mazoir, N., Auhmani, A., Dakir, M., Itto, M. Y. A., & Benharref, A. (2004). (3S)-Tosyl-24-methyl-elemo-lanosta-8,24(31)-diene-7,11-dione. Molbank, 2004(1), M366. https://doi.org/10.3390/M366

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