PROCESS FOR PREPARING 17ALPHA-ACETOXY-6-METHYLENEPREGN-4-ENE-3,20-DIONE, MEDROXYPROGESTERONE ACETATE AND MEGESTROL ACETATE
申请人:ANNEN Klaus
公开号:US20090012321A1
公开(公告)日:2009-01-08
The present invention relates to a process for preparing 17α-acetoxy-6-methylenepregn-4-ene-3,20-dione (4) as an intermediate, and to processes for preparing medroxyprogesterone acetate (1) (17α-acetoxy-6α-methylpregn-4-ene-3,20-dione) and megestrol acetate (2) (17α-acetoxy-6-methylpregna-4,6-diene-3,20-dione) via this intermediate (4).
The present invention provides crystalline forms of a compound of formula (I):
Also provided are pharmaceutical compositions that include the provided crystalline forms and methods of using the provided crystalline forms and pharmaceutical compositions for the treatment of cancer.
The present invention provides a malonate salt of a compound of formula (I):
which is a crystalline salt. Also provided are pharmaceutical compositions that include the provided malonate salt and methods of using the provided crystalline forms and pharmaceutical compositions for the treatment of cancer.
Process to prepare 11beta, 17alpha,21-trihydroxy-6alpha-methylpregna-1,4-diene-3,20-dione 21-acetate
申请人:——
公开号:US20030044885A1
公开(公告)日:2003-03-06
The present invention is a novel process for the transformation of 17&agr;-hydroxy-6&agr;-methylpregn-4-ene-3,20-dione 17-acetate (I)
1
to 11&bgr;,17&agr;,21-trihydroxy-6&agr;-methylpregna-1,4-diene-3,20-dione 21-acetate (VI)
2
Process to prepare 11beta,17alpha ,21-trihydroxy-6alpha-methylpregna-1,4-diene-3,20-dione 21-acetate
申请人:——
公开号:US20040006240A1
公开(公告)日:2004-01-08
The present invention is a novel process for the transformation of 11&bgr;,17&agr; dihydroxy-6&agr;-methylpregna-1,4-diene-3,20-dione 17-acetate (III)
1
to 11&bgr;,17&agr;,21-trihydroxy-6&agr;-methylpregna-1,4-diene-3,20-dione 21-acetate (VI)
2