198414-31-2Relevant articles and documents
Acetic acid etra si Tong and intermediate preparation method and use thereof
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, (2017/07/13)
The invention relates to an intermediate of Proellex(R)-V and preparation method and purpose thereof. The invention provides a 4-step method for preparing 3,3,20,20-di(ethylenedioxy)-17alpha,21-dihydroxy-19-norpregna-5(10),9(11)-diene, which has the advan
INDUSTRIAL METHOD FOR THE SYNTHESIS OF 17-ACETOXY-11beta-[4-(DIMETHYLAMINO)-PHENYL]-21-METHOXY-19-NORPREGNA-4,9-DIEN-3,20-DIONE AND THE KEY INTERMEDIATES OF THE PROCESS
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Page/Page column 12, (2010/06/16)
The present invention relates to a process for the synthesis of the known 17-acetoxy-11-β-[4-(dimethyl amino)-phenyl]-21-methoxy-19-norpregna-4,9-dien-3,20-dione (further on CDB-4124) of formula (I) from 3,3-[1,2-ethandiyl-bis(oxy)]-oestr-5(10),9(11)-dien
Process for preparing17alpha-acetoxy-11beta-[4-n,n(dimethylamino)phenyl]-21-methoxy-19-norpregna-4,9-diene -3,20-dione, intermediates useful in the process , and processes for preparing such intermediates
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, (2008/06/13)
A compound having general formula (I) in which R1 is a member selected from the group consisting of —OCH3, —SCH3, —N(CH3)2, —NHCH3, —CHO, —COCH3 and —CHOHCH3; R2