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:
Mar. 01, 1977
Filed:
Jun. 06, 1975
Martin Gall, Kalamazoo, MI (US);
The Upjohn Company, Kalamazoo, MI (US);
Abstract
Compounds of the formula I: ##STR1## wherein R.sub.1 is hydroxymethyl, or -CH.sub.2 NR.sub.6 R.sub.7, in which R.sub.6 is -CH.sub.2 -C.tbd.CH, -CH.sub.2 -CH=CH.sub.2, ##STR2## or alkyl of 1 to 3 carbon atoms, inclusive; R.sub.7 is hydrogen or alkyl of 1 to 3 carbon atoms, or together ##STR3## is pyrrolidino, piperidino or morpholino; wherein R.sub.2 is hydrogen, chlorine or fluorine; wherein R.sub.3 is hydrogen, or fluorine if R.sub.2 is fluorine; wherein R.sub.4 is hydrogen, fluorine, chlorine, bromine, nitro, or trifluoromethyl; and wherein R.sub.5 is hydrogen, methyl or ethyl. These compounds, except those in which R.sub.7 is hydrogen, are produced by heating a compound of formula II: ##STR4## wherein R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are defined as hereinabove, and wherein R'.sub.1 is the same as R.sub.1 except that in defining R'.sub.1,R.sub.7 may not be hydrogen, with aqueous formaldehyde in formic acid solution at reflux temperature (about 100.degree. C.). Compounds in which R.sub.7 are hydrogen require steps further shown in the specification. The compounds of formula I and their pharmacologically acceptable acid addition salts thereof have tranquilizing, anti-anxiety and anti-convulsant activity useful for the treatment of animals and man.