Methods for preparing 7alpha-hydroxy-dehydroepiandrosterone

Details Methods for preparing 7alpha-hydroxy-dehydroepiandrosterone Methods for preparing 7alpha-hydroxy-dehydroepiandrosterone

2005-08-16

2005-08-16

Dentz, Bernard (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Cyclopentanohydrophenanthrene ring system containing

Reexamination Certificate

active

06930192

ABSTRACT:
The invention relates to new processes for preparing 7alpha-hydroxy-dehydroepiandrosterone of formula (1):

REFERENCES:
patent: 5277907 (1994-01-01), Loria
patent: 5461042 (1995-10-01), Loria
patent: 5693809 (1997-12-01), Durette et al.
patent: 2003/0054021 (2003-03-01), Dalko et al.
patent: 2 793 491 (2000-11-01), None
patent: 92 03925 (1992-03-01), None
patent: 93 20696 (1993-10-01), None
patent: 94 23722 (1994-10-01), None
patent: 98 50409 (1998-11-01), None
patent: WO 03/035023 (2003-05-01), None
Starka,Collection of Czechoslovakian Chemical Communications, vol. 26, p. 2452-2456 (1961).
P. Marwah et al.: “Steroidal allylic fluorination using diethylaminosulfur trifluoride: A convenient method for the synthesis of 3beta-acetoxy-7alpha- and 7beta-fluoroandrost-5-en-17-one” Steroids: Structure, Function, and Regulation, vol. 61, No. 8, pp. 453-460, Aug. 1, 1996.
Jar Salvador et al.: “Copper catalysed allylic oxidation of DELTA-steroids by t-butyl hydroperoxide” Tetrahedron Letters, vol. 38, No. 1, pp. 119-122 Jan. 6, 1997.
V. Pouzar et al.: “Synthesis of (19E)-3beta, 7alpha-dihydroxy-17oxoandrost-5-en-19-al 19-(0-carboxymethyl)oxime, a new hapten for 7alpha-hydroxydehydroepiandrosterone(3beta,7alpha-dihydroxyandrost-5-en-17-one)—7alpha-hydroxylation of dehydroepiandrosterone and pregnenolone by rat brain microsomes” Steroids: Structure, Function, and Regulation, vol. 63, No. 9, pp. 454-458, Sep. 1, 1998.

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