Facile, high-yielding synthesis of novel pentacyclic steroids

Tetrahedron Letters

Volumn 37, Issue 12, 1996, Pages 2085-2088

  Skoda Földes, Rita ^a   Jeges, György ^a   Kollár, László ^a   Horváth, Judit ^b   Tuba, Zoltán ^b  

^a UNIVERSITY OF PANNONIA   (Hungary)

^b GEDEON RICHTER LTD   (Hungary)

Author keywords

[No Author keywords available]

Indexed keywords

ANDROSTANE DERIVATIVE;

ARTICLE; CHIRALITY; DRUG SYNTHESIS; REACTION ANALYSIS; STEREOCHEMISTRY;

EID: 0343338330     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/0040-4039(96)00199-2     Document Type: Article

References (11)

1. Pinder, A.R. Steroidal Alkaloids in Rodd's Chemistry of Carbon Compounds; Coffey, S. Ed., Elsevier, Amsterdam, 1986, Vol. IV, p 381.
2. (a) Lenz, G.R. J. Org. Chem. 1979, 44, 4299.
3. (b) Levina, I.S.; Kulikova, L.E.; Kamernicki, A.V.; Elyanov, B.S.; Gonikberg, E.M. Izv. Akad. Nauk., Ser. Khim. 1992, 7, 1622.
4. Some recent Stille-coupling for steroidal substrates: (a) Liebeskind, L.S.; Fengl, R.W. J. Org. Chem. 1990, 55, 5359.
5. (b) Ciattini, P. G.; Morera, R.; Ortar, G. Tetrahedron Lett., 1990, 31, 1889.
6. (c) Skoda-Földes, R.; Kollár, L.; Marinelli F.; Arcadi, A. Steroids, 1994, 59, 691.
7. (d) Skoda-Földes, R.; Csákai, Z.; Kollár, L.; Horváth, J.; Tuba, Z. Steroids, 1995, 60, 812.
8. For palladium complexes of maleic anhydride see: Itoh, K.; Ueda, F.; Hirai, K.; Ishii, Y. Chem. Lett. 1977, 877.
9. +).
10. +).
11. 4 4 could be converted to 7 with 46 % yield.