The invention is directed to a compound of the formula I wherein the variables are as defined herein, or a stereoisomeric form thereof, mixture of stereoisomeric forms, in any ratio, or a salt thereof. Another aspect of the present invention is directed to a pharmaceutical composition comprising, a pharmaceutically effective amount of one or more compounds of formula I according to claim 1 in admixture with a pharmaceutically acceptable carrier.The invention is also directed to a method for effecting the prophylaxis and therapy of degenerative joint diseases such as osteoarthroses, spondyloses, cartilage loss following joint trauma or a relatively long period of joint immobilization following meniscus or patella injuries or ligament ruptures, diseases of the connective tissue such as collagenoses, periodontal diseases, wound healing disturbances and chronic diseases of the locomotory apparatus such as inflammatory, immunological or metabolism-associated acute and chronic arthritides, arthropathies, myalgias and disturbances of bone metabolism, for the treatment of ulceration, atheroscleroses and stenoses, and for the treatment of inflammations, cancer diseases, tumor metastasis formation, cachexia, anorexia, cardiac insufficiency and septic shock or for the prophylaxis of myocardial and cerebral infarctions, in a patient in need thereof, comprising administering to the patient a pharmaceutically effective amount of the compound of formula I according to claim 1, or a pharmaceutically acceptable salt, solvate or prodrug thereof.Furthermore the invention is directed to a method for preparing a compound of formula I.