| 摘要 |
<p>The new pyridopyrimidine derivative of the formula (A), wherein n denotes an integer of 0 to 3, Q stands for -(CH2) m - ( m denotes an integer of 0 to 2), -O-, -S(O)p-( p denotes an integer of 0 to 2 ) or -N-, and R<1> to R<6> stand for substituents, or its salt is described. Preparation of them and use to endothelin receptor antagonistic agent are exemplified. An endothelin receptor antagonist consisting of said compound is effective as therapeutic composition of acute renal insufficiency, myocardial infarction, hypertension, cerebral infarction, angina pectoris, arteriosclerosis, hepatopathy, pulmonary hypertension, bronchial asthma, organohypofunction occuring during operation or transplantation of organs. <CHEM></p> |
