Efficient synthesis of C(22) homologous derivatives of hepatoprotective soyasapogenol B

Tetrahedron Letters

Volumn 38, Issue 48, 1997, Pages 8335-8336

  Sasaki, Kazue ^a   Minowa, Nobuto ^a   Kuzuhara, Hiroyuki ^a   Nishiyama, Shoji ^a   Omoto, Shoji ^a  

^a MEIJI SEIKA KAISHA LTD   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

LIVER PROTECTIVE AGENT; SOYASAPOGENOL B; UNCLASSIFIED DRUG;

ARTICLE; CHEMICAL REACTION; DRUG SYNTHESIS; LIVER PROTECTION; STEREOCHEMISTRY; STRUCTURE ANALYSIS;

EID: 0030719480     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(97)10256-8     Document Type: Article

References (16)

1. (a) Ochiai, E.; Tsuda, K.; Kitagawa, S. Ber. 1937, 70, 2083.
2. (b) Idem. ibid. 1937, 70, 2093.
3. (c) Tsuda, K.; Kitagawa, S. ibid. 1938, 71, 790.
4. (d) Idem. ibid. 1938, 71, 1604.
5. Kitagawa, I.; Yoshikawa, M.; Wang, H. K.; Saito, M.; Tosirisuk, V.; Fujiwara, T.; Tomita, K. Chem. Pharm. Bull. 1982, 30, 2294.
6. Sasaki, K.; Minowa, N.; Kuzuhara, H.; Nishiyama, S.; Omoto, S. Bioorg. Med. Chem. Lett. 1997, 7, 85.
7. Kitagawa, I.; Wang, H. K.; Taniyama, T.; Yoshikawa, M. Chem. Pharm. Bull. 1988, 36, 153.
8. Watson, A. T.; Park, K.; Wiemer, D. F.; Scott, W. J. J. Org. Chem. 1995, 60, 5102.
9. Mitsui, S.; Gohke, K.; Saito, H.; Nanbu, A.; Senda, Y. Tetrahedron 1973, 29, 1523.
10. To be reported elsewhere in due course.
11. (a) Klein, J.; Lichtenberg, D. J. Org. Chem. 1970, 35, 2654.
12. (b) Brown, H. C.; Liotta, R.; Brener, L. J. Am. Chem. Soc. 1977, 99, 3427.
13. (a) Cieplak, A. S.; Tait, B. D.; Johnson, C. R. J. Am. Chem. Soc. 1989, 111, 8447.
14. (b) Harada, T.; Nakajima, H.; Ohnishi, T.; Takeuchi, M.; Oku, A. J. Org. Chem. 1992, 57, 720.
15. (a) Lindgren, B. O.; Nilsson, T. Acta Chem. Scand. 1973, 27, 888.
16. (b) Kraus, G. A.; Taschner, M. J. J. Org. Chem. 1980, 45, 1175.