摘要 |
This application relates to compounds of formula (I), wherein R<SUP>1</SUP>, R<SUP>2</SUP>, R<SUP>3</SUP>, and R<SUP>4 </SUP>are defined as recited in the claims, or a tautomer, salt, hydrate, or alkoxide thereof. A process for preparing such materials, pharmaceutical compositions containing them, and methods of treating a cardiovascular disorder by administering them to a patient are also disclosed and claimed. |