| abstract |
The invention concerns the novel racemic and laevorotantory optically active forms of the thromboxane A₂ antagonist n5(Z)-7-([2,4,5-cis]-4-o-hydroxyphenyl-2-trifluoromethyl-1,3-ndioxan-5-yl)heptenoic acid of formula I, their salts, pharnmaceutical compositions, and processes for their manufacnture and intermediates therefor. The pharmaceutical agents nand their compositions are of value in certain pulmonary nand/or vascular disorders. |