Abstract: A pharmaceutical composition and process for preparing the same is provided, wherein the active ingredient of the said composition is one or more compounds of the general formula /I/ ##STR1## In the formula R is longer aliphatic hydrocarbon radical which may contain one or more unsaturation,R.sub.1 is hydrogen or longer aliphatic acyl radical which may contain one or more unsaturation,X is oxygen and Y is hydrogen, orX and Y, when taken together, form a radical of the formula .dbd.N--CH.sub.2 --CH.sub.2 --,z is 1 to 5, andq is 1 to 4.The use of the above compounds in the therapy of tumorous diseases and for regenerating tumorous cells and tissues is also claimed.

Abstract: A circuit arrangement for generating high voltage pulses from DC voltage. The circuit includes a transformer comprising at least two primary windings and secondary windings, in which the primary windings are serial connected with at least one diode, a switching circuit and a voltage source. A first capacitor is connected in parallel with the first primary winding and diode, and in series with the secondary primary winding. The switching circuit is formed from the emitter-collector-section of a switching transistor. The output of a transistor amplifier is connected to the base of the switching transistor. The input of the transistor amplifier is coupled with the output of a control circuit. Two serial connected resistors are inserted between the input of the transistor amplifier and the output of the control circuit. The emitter-collector-section of a first transistor is connected to the common terminal of both the resistors. A voltage divider is connected to the base of the first transistor.