Abstract: 4-(3-Nitrophenyl)pyridine, an intermediate useful in the preparation of 1-(lower-alkyl)-1,4-dihydro-4-oxo-7-(4-pyridyl)-3-quinolinecarboxylates, which are useful as anti-bacterial agents, is prepared by reacting 3-nitrobenzaldehyde with two molar equivalents of di-lower-alkyl) oxalacetate (II) in the presence of a catalytic condensing agent, preferably piperidine and/or its acetate, to produce tetra-(lower-alkyl) 3-(3-nitrophenyl)-1,5-pentanedione-1,2,4,5-tetracarboxylate (III), reacting III with ammonia to produce tetra-(lower-alkyl) 1,4-dihydro-4-(3-nitrophenyl)-2,3,5,6-pyridinetetracarboxylate (IV), oxidizing IV to produce tetra-(lower-alkyl) 4-(3-nitrophenyl)-2,3,5,6-pyridinetetracarboxylate (V), hydrolyzing V to produce 4-(3-nitrophenyl)-2,3,5,6-pyridinetetracarboxylic acid (VI) and decarboxylating VI to produce 4-(3-nitrophenyl)pyridine (VII). Intermediates III, IV, V and VI are novel.

Abstract: 3-R-3-(Ac.sub.2 NH)-9-R'-9-(Ac.sub.1 NH)-1,5-dioxaspiro[5.5]undecane (I), where R and R' are each hydrogen or lower-alkyl, Ac.sub.1 is lower-alkanoyl or 4-Q.sub.1 -benzoyl and Ac.sub.2 is 4-Q.sub.2 -benzoyl where Q.sub.1 and Q.sub.2 each is lower-alkoxy or polyhalo-lower-alkoxy, are antifertility agents. The compounds are prepared by di-acylating 3-R-9-R'-1,5-dioxaspiro[5.5]undecan-3,9-diamine (II) or mono-acylating 9-(Ac.sub.1 NH)-3-R-9-R'-1,5-dioxaspiro[5.5]undecan-3-amine (IV). IV and II are prepared by oxidizing 4-(Ac.sub.1 NH)-4-R'-cyclohexanol (VI) to produce 4-(Ac.sub.1 NH)-4-R'-cyclohexanone (VII), reacting VII with 2-NO.sub.2 -2-R-1,3-propanediol to produce 3-R-3-NO.sub.2 -9-(Ac.sub.1 NH)-9-R'-1,5-dioxaspiro[5.5]undecane (VIII), reducing VIII to produce the corresponding 3-amine (IV) and hydrolyzing IV to the corresponding 3,9-diamine (II). Methods of preparing VI are shown.

Abstract: (1-R- or 3-trifluoromethyl)-3,4-dihydro-2(1H)-isoquinolinecarboxamidoximes where R is pentafluoroethyl or heptafluoropropyl, having antithrombotic and antibacterial activities, are prepared by reacting the corresponding (1-R- or 3-trifluoromethyl)-3,4-dihydro-2(1H)-isoquinolinecarbonitriles which are prepared from the corresponding (1-R- or 3-trifluoromethyl)-3,4-dihydroisoquinolines via the (1-R- or 3-trifluoromethyl)-1,2,3,4-tetrahydroisoquinolines. Said tetrahydroisoquinoline where R is pentafluoroethyl also has antibacterial activity.

Abstract: Alkylenediamine derivatives substituted on each nitrogen atom by 4-(4'-nitrophenoxy)benzyl or 4-(4'-aminophenoxy)benzyl, optionally substituted additionally on each nitrogen by lower-alkyl, phenylcarbamyl or dihaloacetyl and optionally interrupted in alkylene by cycloalkylene, phenylene, alkylated-phenylene, pyridylene, furylene and thiazolylene. The compounds, which have antibacterial activity, are prepared stepwise by reacting an alkylenediamine with two molar equivalents of 4-(4'-nitrophenoxy)benzaldehyde and reducing the resulting bis(benzal)alkanediamines.