The synthesis of antioxidants showing selective affinity for low density lipoproteins

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David W. Brown, Mary F. Mahon, Aleyamma Ninan and Malcolm Sainsbury


Abstract

The syntheses of some novel indolinosteroids, indolinodecalins and spiro tetrahydroquinolinopiperidines are described. These compounds act as chain-breaking antioxidants and in some cases show very selective binding to LDL particles in human plasma. Aspects of the stereoselectivity in the Fischer indolisation of three common steroidal ketones and the reduction of the resultant indoles to indolines are considered.


References

  1. R. S. Cotran and J. M. Munro, Pathogenesis of atherosclerosis: recent concepts, in The role of Cholesterol in Atherosclerosis: New Therapeutic Opportunities, S. M. Grundy and A. G. Bearn(eds.), Philadelphia, 1988, pp. 5–21 Search PubMed.
  2. G. Scott, Chem. Britain, 1996, 31, 879 Search PubMed.
  3. S. M. Grundy, Cholesterol and Atherosclerosis: diagnosis and treatment, J. B. Lippincott Company, Gower Medical publishing, New York, 1990, pp. 1.2–1.38 Search PubMed.
  4. B. Halliwell, Free Rad. Res. Commun., 1990, 9, 1 Search PubMed; G. M. Campo, F. Squadrito, M. Iocolano, D. Altavilla, G. Calapai, B. Zingarelli, R. Scuri and A. P. Caputi, Free Radical Biol. Med., 1994, 16, 427 CrossRef CAS.
  5. M. E. Zughaib, X. L. Tang, M. Schleman, M. O. Jeroudi and R. Boli, Cardiovasc. Res., 1994, 28, 235 CAS.
  6. C. Westerlund, A.-M. Östlund-Lindqvist, M. Sainsbury, H. G. Shertzer and P.-O. Sjöquist, Biochem. Pharmacol., 1996, 51, 1397 CrossRef CAS.
  7. D. W. Brown, P. R. Graupner, M. Sainsbury and H. G. Shertzer, Tetrahedron, 1991, 47, 4383 CrossRef CAS; J. Graham, A. Ninan, K. Reza, M. Sainsbury and H. G. Shertzer, Tetrahedron, 1992, 48, 167 CrossRef CAS; D. W. Brown, M. F. Mahon, A. Ninan and M. Sainsbury, J. Chem. Soc., Perkin Trans. 1, 1995, 3117 RSC.
  8. C. Dore'e and V. A. Petrow, J. Chem. Soc., 1935, 1391 RSC.
  9. Y. Ban and Y. Sato, Chem. Pharm. Bull., 1965, 13, 1073 CAS.
  10. Heats of formation for cis and trans-1,2,3,4,4a,9b-hexahydrocarbazoles are 14.7 and 18.7 kcal mol–1 respectively, when calculated by the AM1 method with the PC Spartan programme, supplied by Wavefunction, Inc. 18401 Von Karman Ave, Suite 370, Irvine, CA 29612, USA.
  11. Data compiled by the Preclinical Research Laboratories, Astra Hässle AB, Mölndal, Sweden.
  12. D. W. Brown, M. F. Mahon, A. Ninan and M. Sainsbury, J. Chem. Soc., Perkin Trans. 1, 1997, in the press Search PubMed.
  13. G. M. Sheldrick, Acta Crystallogr., Sect. A, 1990, 46, 467 CrossRef.
  14. G. M. Sheldrick, SHELXL, a computer program for crystal structure refinement, University of Gottingen, 1993.
  15. P. McArdle, J. Appl. Crystallogr., 1994, 27, 438 CrossRef.
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