The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 1980
Filed:
May. 08, 1978
Lucien Nedelec, Le Raincy, FR;
Andre Pierdet, Noisy-le-Sec, FR;
Roger Deraedt, Les Pavillons-sous-Bois, FR;
Roussel Uclaf, Paris, FR;
Abstract
Novel .DELTA..sup.4 -pregnenes of the formula ##STR1## wherein X.sub.1 is selected from the group consisting of .dbd.O and ##STR2## Y is selected from the group consisting of hydrogen and halogen, R.sub.1 is selected from the group consisting of hydrogen and acyl of an organic carboxylic acid of 1 to 18 carbon atoms, X.sub.2 is selected from the group consisting of hydrogen and --OH, R in the 16.alpha.- or .beta.-position is selected from the group consisting of hydrogen, --OH and methyl, Z is selected from the group consisting of (1) --OH, (2) alkoxy of 1 to 12 carbon atoms, (3) cycloalkoxy of 3 to 12 carbon atoms, (4) acyloxy of an organic carboxylic acid of 1 to 18 carbon atoms, (5) ##STR3## wherein W is a hydrocarbon of 1 to 12 carbon atoms, (6) ##STR4## wherein R.sub.2 is hydrogen or alkyl of 1 to 12 carbon atoms, (7) ##STR5## wherein R.sub.3 is a hydrocarbon of 1 to 12 carbon atoms and (8) ##STR6## the dotted line in the A ring indicates the optional presence of a double bond in the 1(2)-position and A and B are both hydrogen or A is methyl, chlorine or fluorine while B is hydrogen or A and B may form a double bond in the 6(7)-position with the proviso that if the A ring has a 1(2) double bond, A is hydrogen or fluorine, B is hydrogen, Y is hydrogen or fluorine, X.sub.2 is hydrogen or --OH, R is methyl and Z is not --OH having a very marked antiallergic activity with a reduced anti-inflammatory activity and a process for their preparation.