Japanese Patent JPS5616800

B2

Cpds. of formula (I): where Z = H or CH3, R = H, CH3, OR'1, R1 = H or carboxylic acyl, A' = alkyl (1-3C) are prepd. by methylating (CH3I) a 3,3-ethylenedioxy 20-oxo-19 norpregna-5,9-diene, followed by acid hydrolysis of the ethylenedioxy gp. and opt. acylation. Methylation gives a mixt. of mono- and dimethylated material, separable before or after hydrolysis.

WO/2009/024022	FATTY ACID BILE ACID CONJUGATES AND MEDICAL USES THEREOF
WO/1991/000732	ANDROGEN DERIVATIVES FOR USE IN THE INHIBITION OF SEX STEROID ACTIVITY
JPH04501851	[Title of the Invention] Minoxidil and a vasoconstrictor drug constituent for alopecia medical treatment

JP8219772A

April 18, 1981

August 18, 1972

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A61K31/575; A61P31/04; C07J9/00; (IPC1-7): C07J9/00

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