BICYCLIC COMPOUND

摘要

A novel compound represented by the following formula (1): [Chemical formula 1] (1) A1 B1 [wherein A represents a saturated heterocyclic group or 5-membered aromatic heterocyclic group each having two heteroatoms in the ring or represents A1 (wherein R<2>, R<3>, and R<4> each represents hydrogen, hydroxy, etc.), etc.; B represents B1 (wherein R<11> represents hydrogen, hydroxy, etc.), etc.; R<1> represents alkyl; and n is an integer of 2 to 6] or a salt thereof; and a medicine containing the compound or salt as an active ingredient. The compound and salt have parathyroid hormone-diminishing activity and are lowly toxic.