Isoxazole, pyrazole, pyran, pyridine and pyrimidine derivatives of fatty acids were synthesized as surface and bioactive heterocycles. Hydroxylation of these intermediates by propylene oxide produced easy-to-handle, efficient and quickly biodegradable surface active agents, which revealed the importance of their applications in safety for humans as well as the environment. These compounds showed good activity against bacteria and fungi, showing promise in applications of drugs, cosmetics, and pesticides.