Crystalline forms of hydrochloride salt of (4a-r,9a-s)-1-(1h-benzoimidazole-5-carbonyl)-2,3,4,4a,9,9a-hexahydro-1h-indeno [2,1-b]pyridine-6-carbonitrile and their use as hsd 1 inhibitors

The present invention relates to crystalline compounds of the following structural formula (II) possessing valuable pharmacological activity. Particularly, the compounds are inhibitors of 11 B-hydroxysteroid dehydrogenase (HSD) 1 and thus are suitable for treatment and prevention of diseases which can be influenced by inhibition of this enzyme, such as metabolic diseases, in particular diabetes type 2, obesity, and dyslipidemia.