Preparation of 22,26-epoxycholest-22-ene steroids. Novel transformation of the side chain in sapogenins

Tetrahedron Letters

Volumn 40, Issue 28, 1999, Pages 5143-5146

  Sandoval Ramírez, Jesús ^a   Castro Méndez, Albina ^a   Meza Reyes, Socorro ^a   Reyes Vázquez, Fabiola ^a   Santillán, Rosa ^b   Farfán, Norberto ^b  

^a BENEMÉRITA UNIVERSIDAD AUTÓNOMA DE PUEBLA   (Mexico)

^b DEPARTAMENTO DE FÍSICA   (Mexico)

Author keywords

[No Author keywords available]

Indexed keywords

22,26 EPOXYCHOLEST 22 ENE DERIVATIVE; SAPOGENIN; UNCLASSIFIED DRUG;

ARTICLE; CHEMICAL ANALYSIS; CHEMICAL STRUCTURE; CHIRALITY; PROTON NUCLEAR MAGNETIC RESONANCE; SYNTHESIS; X RAY DIFFRACTION;

EID: 0033538634     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(99)00884-9     Document Type: Article

References (14)

1. Marker, R. E.; Rohrmann, E. J. Am. Chem. Soc. 1940, 62, 518-520.
2. Marker, R. E.; Tsukamoto, T.; Turner, D. L. J. Am. Chem. Soc. 1940, 62, 2525-2531.
3. See for example: Cameron, A. F. B.; Evans, R. M.; Hamlet, J. C.; Hunt, J. S.; Jones, P. G.; Long, A. G. J. Chem. Soc. 1955, 2807-2816.
4. See for example: (a) Smith, G. A.; Williams, D. H. J. Chem. Soc., Chem. Commun. 1971, 402-403.
5. (b) Micovic, I. V.; Ivanovic, M. D.; Piatak, D. M. Synthesis 1990, 591-592 and references cited therein,
6. (c) Borah, P.; Chowdhury, P. Indian J. Chem., Sect. B 1998, 37B, 408-410.
7. (d) Chowdhury, P. K.; Bordoloi, M.; Baraua, N. C.; Sarmah, H. P.; Goswami, P. K.; Saharma, R. P.; Baruah, A. P.; Mathur, R. K.; Ghosh, A. C. Chem. Abstr. 1998, 129, 230884c.
8. See for example: (a) Doukas, H. M.; Fontaine, T. D. J. Am. Chem. Soc. 1951, 73, 5917-5918.
9. (b) Barton, D. H. R.; Magnus P. D.; Smith, G.; Zurr, D. J. Chem. Soc., Chem. Commun. 1971, 861-863.
10. (c) González, A. G.; Francisco, C. G.; Freire, R.; Hernández, R.; Salazar, J. A.; Suárez, E. Tetrahedron Lett. 1974, 4289-4292.
11. (d) Tian, W. Chem. Abstr. 1998, 128, 167599a.
12. Zderic, J. A.; Cervantes, L.; Galvan, M. T. J. Am. Chem. Soc. 1962, 84, 102-106.
13. 3.
14. 7: calculated: C 71.19, H 8.69, found: C 71.03, H 8.69.