Abstract: Salts of basic caffeine-8-ethers having the following general formula are disclosed: ##STR1## where X=2 or 3 and R is an alkyl group having from 1 to 3 carbon atoms, whereby the chain may be branched, in the form of fumarates. The components have pharmaceutical properties including effectiveness as anti-psoriatics.

Abstract: New [8-(dialkylamino alkoxy)-caffeine]-platinum complex compounds of the general formula ##STR1## are prepared from 8-(dialkylamino alkoxy)-caffeine and hexachloro platinic acid. The complex compounds are nonpoisonous, stable and infinitely durable. In pharmacological test series distinct cytostatic activity of the complex compounds is observed and they are suitable for use as active components in pharmaceutical products.

Abstract: A therapeutic composition for the treatment of acne vulgaris comprising a pyridine aldehyde compound of the formula: ##STR1## wherein n is 0 or 1. Also the process for the treatment of acne vulgaris comprising applying said pyridine aldehyde to the lesions thereof.

Abstract: 4,4-Diarylpiperidine compounds, preferably 4,4-diphenylpiperidine which are substituted or unsubstituted in the 1-position of the piperidine nucleus, such as 1-(lower alkyl)-4,4-diphenylpiperidines, 1-(lower alkyl)-4-phenyl-4-tolylpiperidines, and their substantially non-toxic, pharmaceutically-acceptable acid addition salts, are highly effective central nervous system (CNS) stimulants which are superior to known amphetamine-type stimulants. A novel and highly advantageous process of making such 4,4-diarylpiperidine compounds comprises reacting a 4-aryl-4-hydroxypiperidine compound which may be substituted in its 3-position by an aroyl group, with an aromatic hydrocarbon, in particular with benzene, in the presence of a Friedel-Crafts-type catalyst.

Abstract: 4,4-Diarylpiperidine compounds, preferably 4,4-diphenylpiperidine which are substituted or unsubstituted in the 1-position of the piperidine nucleus, such as 1-(lower alkyl)-4,4-diphenylpiperidines, 1-(lower alkyl)-4-phenyl-4-tolylpiperidines, and their substantially non-toxic, pharmaceutically-acceptable acid addition salts, are highly effective central nervous system (CNS) stimulants which are superior to known amphetamine-type stimulants. A novel and highly advantageous process of making such 4,4-diarylpiperidine compounds comprises reacting a 4-aryl-4-hydroxypiperidine compound which may be substituted in its 3-position by an aroyl group, with an aromatic hydrocarbon, in particular with benzene, in the presence of a Friedel-Crafts-type catalyst.