D. Bozsing et al., SYNTHESIS AND PHARMACOLOGICAL STUDY OF NEW 3,4-DIHYDRO-2H,6H-PYRIMIDO[2,1-B][1,3]THIAZINES, European journal of medicinal chemistry, 31(9), 1996, pp. 663-668
A series of racemic pyrimido-thiazine derivatives was synthesized and
many of their in vivo activities found to be comparable to acetylsalic
ylic acid and aminophenazone in an antiinflammatory model and an antip
yretic test. Analogues 7a and 7e are the most potent in rat carrageeni
n and yeast fever assays. These compounds did not inhibit prostaglandi
n biosynthesis in vitro.