Novel thiazolopyrimidine derivatives (4a-l) were efficiently synthesized via the cyclo-condensation reactions of 2-(3-dimethylamino) acryloyl) phenyl 4-methylbenzene sulfonates with 2,3-dihydro-4-phenylthiazol-2-amines under microwave irradiation in ethanol catalyzed by iodine and the synthesized compounds were evaluated for their in vitro antimicrobial and anti-inflammatory activities. Among the newly synthesized compounds, 4d, 4h and 4l have exhibited potent antibacterial activity where as other derivatives 4b and 4j have showed moderate activity in comparison to standard drug amphcillin. The derivatives, 4d and 4l have displayed potent antifungal activity when their activity data was compared with standard drug norcadine. Some of the selected compounds were also screened for their anti-inflammatory activity and the results are compared with standard drug indomethacin. Among the derivatives, 4j possessed potent anti-inflammatory activity while 4b, 4f and 4k have exhibited moderate activity.