| 摘要 |
Benzoxazine derivatives of the formula I <IMAGE> where R(1) and R(2) equal H, OH, alkoxy, Hal or a multiplicity of other substituents, R(3) equals alkyl or alkanoyl; R(4) equals H, alkyl or alkanoyl, and R(5) equals pyrid(azin)yloxy, pyrimidinyloxy, pyridazinyloxy and other heterocycles and their salts are useful medicaments for the treatment of disorders of the cardiovascular system, asthma, smooth muscle disorders, high blood pressure, cardiac arrhythmias and circulatory disorders of the brain; they are also used for topical application to control hair loss. |
