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:
Dec. 23, 1980
Filed:
Oct. 27, 1976
Junki Katsube, Toyonaka, JP;
Hiroyuki Mizote, Ibaragi, JP;
Shuichi Harada, Ibaragi, JP;
Hisao Yamamoto, Kobe, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
2-Substituted-2'-methyl-6,7-benzomorphan derivatives of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen or C.sub.1 -C.sub.3 alkyl; and R.sub.3 is hydrogen, halogen or C.sub.1 -C.sub.3 alkyl, and pharmaceutically acceptable salts thereof, which are useful as non-addicting analgesics with sedative effects, are prepared by the reaction of a 6,7-benzomorphan derivative of the formula: ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, with a reactive derivative of an alcohol compound of the formula: ##STR3## wherein X is an optionally protected carbonyl group; and R.sub.3 is as defined above, optionally followed by the elimination of the protective group of the carbonyl group, or by the oxidation of a 6,7-benzomorphan derivative of the formula: ##STR4## wherein R.sub.1, R.sub.2 and R.sub.3 are as defined above.