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Volumn 63, Issue 26, 1998, Pages 9919-9923

Efficient, stereoselective synthesis of 24(S),25-epoxycholesterol

Author keywords

[No Author keywords available]

Indexed keywords

24,25 EPOXYCHOLESTEROL; CHOLENIC ACID; CHOLESTEROL DERIVATIVE; DESMOSTEROL ACETATE; STIGMASTEROL; UNCLASSIFIED DRUG;

EID: 0032567498     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo981753v     Document Type: Article
Times cited : (41)

References (44)
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    • (e) Reference 25. Prenyllithium (PL)
    • Prenyl Grignard reagent (PGR) + 12 or 13: (a) Lipshutz, B. H.; Hackmann, C. J. Org. Chem. 1994, 59, 7437-7444. PGR + 12 + various copper reagents (Cu): (b) Tamura, M.; Kochi, J. Synthesis 1971, 303-305. (c) Fouquet, G.; Schlosser, M. Angew. Chem., Int. Ed. Engl. 1974, 13, 82-83. (d) Schlosser, M. Angew. Chem., Int. Ed. Engl. 1974, 13, 701-706. (e) Reference 25. Prenyllithium (PL): (f) Seyferth, D.; Weiner, M. A. J. Org. Chem. 1961, 26, 4797-4800. PL + 12 or 13: (g) Reference 22. PL + 12 or 13 + Cu: See ref 23b-d. (h) Lipshutz, B. H.; Elworthy, T. R. J. Org. Chem. 1990, 55, 1695-1696. (i) Lipshutz, B. H.; Ellsworth, E. L.; Dimock, S. H.; Smith, R. A. J. J. Am. Chem. Soc. 1990, 112, 4404-4410.
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    • Prenyl Grignard reagent (PGR) + 12 or 13: (a) Lipshutz, B. H.; Hackmann, C. J. Org. Chem. 1994, 59, 7437-7444. PGR + 12 + various copper reagents (Cu): (b) Tamura, M.; Kochi, J. Synthesis 1971, 303-305. (c) Fouquet, G.; Schlosser, M. Angew. Chem., Int. Ed. Engl. 1974, 13, 82-83. (d) Schlosser, M. Angew. Chem., Int. Ed. Engl. 1974, 13, 701-706. (e) Reference 25. Prenyllithium (PL): (f) Seyferth, D.; Weiner, M. A. J. Org. Chem. 1961, 26, 4797-4800. PL + 12 or 13: (g) Reference 22. PL + 12 or 13 + Cu: See ref 23b-d. (h) Lipshutz, B. H.; Elworthy, T. R. J. Org. Chem. 1990, 55, 1695-1696. (i) Lipshutz, B. H.; Ellsworth, E. L.; Dimock, S. H.; Smith, R. A. J. J. Am. Chem. Soc. 1990, 112, 4404-4410.
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    • Dasgupta, S. K.; Gut, M. J. Org. Chem. 1975, 40, 1475-1477. This paper reports that 12 gives only 16 or dimeric product upon reaction with prenyl Grignard reagent. Ikekawa, ref 25, also reports a reduction product analogous to 16.
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    • note
    • Atomic coordinates, bond lengths and angles, and thermal parameters for 1 and epi-1 have been deposited at the Cambridge Crystallographic Data Centre, with registration nos. 102766 for 1 and 102765 for epi-1.
  • 37
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    • 3OH at reflux for 24 h, see: Catalan, C. A. N.; Kokke, W. C. M. C.; Duque, C.; Djerassi, C. J. Org. Chem. 1983, 48, 5207-5214.
    • (1963) J. Org. Chem. , vol.28 , pp. 571-572
    • Steele, J.A.1    Mosettig, E.2
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    • PhD Dissertation, Dartmouth College
    • Anhydrous 1, mp 160-162°C, has previously been fully characterized: Reference 2. See also: Steckbeck, S. R. PhD Dissertation, Dartmouth College, 1981.
    • (1981)
    • Steckbeck, S.R.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.