PROSTAN-DERIVATE, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE PHARMAZEUTISCHEN ZUSAMMENSETZUNGEN

The disclosure relates to 9β-aryloxy prostane derivatives, for example 16-(3-chlorophenoxy) -11α, 15a-dihydroxy-16 -methyl-9β-phenoxy -18, 19, 20-trinor-5-cis, 13-trans-prostadienoic acid, which possess high activity as abortifacients, cervical softeners, inducers of parturition or inhibitors of gastric acid production in mammals. These properties are typical of prostaglandin analogues of the E series, but chemically the new 9β-aryloxy prostane derivatives are prostaglandin F series analogues and are therefore more stable than the E series analogues previously used for the above purposes. The new derivatives are manufactured by known analogy processes, and are formulated in conventional manner.