solid or liquid formulations for enteral preferably oral or for parenteral administration thus the formulations may be in the form of capsules tablets coated tablets suppositories emulsions or solutions these formulations may comprise conventional pharmaceutical carriers e g solids such as starch lactose mannit polyvinyl pyrrolidene or liquids such as sterile water pharmaceutically acceptable alcohols or fatty oils and may further comprise pharmaceutical adjuvants e g binders or lubricants for tabletting stabilizing flavoring or emulsifying agents according to the present invention the new compounds of formula i may be obtained by removing the protective groups x from compounds of formula ii by conventional methods the groups x may be chosen from any protective groups which are suitable for protecting phenolic hydroxy groups e g by forming phenol ethers or esters and which can be split off by hydrolysis preferably acidic hydrolysis or by hydrogenolysis thus in compounds of formula ii x may represent lower alkyl preferably methyl or a benzyl group or both substituents x together form a lower alkylene group preferably a methylene group the protective groups can be removed by conventional acidolytic methods for phenol ether splitting e g by treating the compounds of formula ii with lewis acids or with concentrated hydrohalogenic acids protective groups x which may be split off by conventional hydrogenolysis comprise the benzyl group or substituted benzyl groups the use of protective groups which can be eliminated by hydrogenolysis is advisable if the substituents r 1 and or r 2 include radicals which are sensitive.