Using a testosterone as a raw material, a steroidal skelecton with A-homo-lactam was constructed. Then, some new aza-A-homocholesteryl-lactam thiazole derivatives were synthesized by modifying of the 17-hydroxyl and introducing of various heterocycles, and their structures were determined by IR, NMR and HRMS. The antiproliferative activity of the compounds against different carcinoma cells was assayed. The results show that some compounds display a distinct antiproliferative activity against tested cancer c...