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. 07, 1978
Filed:
Dec. 27, 1976
Gerhard Sauer, Berlin, DT;
Helmut Hauser, Unna, DT;
Gregor Haffer, Berlin, DT;
Juergen Ruppert, Berlin, DT;
Ulrich Eder, Berlin, DT;
Rudolf Wiechert, Berlin, DT;
Schering Aktiengesellschaft, Berlin and Bergkamen, DT;
Abstract
Bicycloalkane derivatives of the formula ##STR1## WHEREIN N IS 1 OR 2, R.sub.1 is lower alkyl, X is carbonyl or free or etherified hydroxymethylene, and Y is --S--R.sub.2, --SO.sub.m --R.sub.2, or ##STR2## wherein m is 1 or 2, R.sub.2 is alkyl, R.sub.3 is hydrogen or lower alkyl, R.sub.4 is aliphatic acyl and Z is nitro, lower alkanoyl, lower alkylsulfinyl, or lower alkylsulfonyl are useful intermediates in the total synthesis of steroids. The compounds are prepared by reacting a corresponding compound lacking the CH.sub.2 Y substituent with formaldehyde and a mercaptan or a sulfinic acid, followed if desired by oxidation and optional salt condensation.