RESUMO
Telmisartan (TEL) requires superior bioavailability in cancer cell compartments. To meet these challenges, we have synthesized a 2-HP-ß-CD-TEL complex with stability constant (Kc) of 2.39 × 10(-3)mM. The absence in the FTIR spectrum of 2-HP-ß-CD-TEL complex of the characteristic peaks of TEL at 1,699 cm(-1) (carboxylic acid) and 741 and 756 cm(-1) (1,2-disubstituted benzene ring vibrations), is indicative of the encapsulation of TEL in the 2-HP-ß-CD cavity. DSC and PXRD also confirmed the synthesis and amorphous structure of complex. The interaction of TEL with 2-HP-ß-CD was examined by NMR and 2D-ROESY which affirms the encapsulation of TEL in the 2-HP-ß-CD cavity in at least two orientations with equal binding energies. The complex also exhibited its superiority in both in vitro release and cytotoxicity experiments on prostate cancer, PC-3 cells as compared to free drug. These data warrant an in depth in vivo to scale-up the technology for the management of prostate cancer.
