Polycyclic N-Heterocyclic Compounds. Part 75. Synthesis of 2,4-Disubstituted 5,6-Dihydro[1]benzoxepino[5,4-d]pyrimidines and 12-Substituted 1,2,4,5-Tetrahydro[1]benzoxepino[4,5-e]imidazo[1,2-c]pyrimidines as Potential Antiplatelet Aggregators. -Several compound libraries are prepared including compounds (III) and other compounds derived from (III), e. g. by substitution of the chlorine moiety, including compounds (V). Evaluation of the compound libraries on collagen-induced platelet aggregation reveals compound (Vd) to be the most potent candidate among the tested compounds. -(OKUDA*, K.; YAMAMOTO, Y.; HIROTA, T.; SASAKI, K.; J. Heterocycl. Chem. 51 (2014) 4, 972-981, http://dx.doi.org/10.1002/jhet.1559 ; Lab. Med. Pharm. Chem., Gifu Pharm. Univ., Gifu 501-11, Japan; Eng.) -M. Tismer 04-194