Bile acids lithocholic acid (LCA) and ursodeoxycholic acid (UDCA) together with trametenolic acid (TMA) were used as starting materials for the preparation of new derivatives bearing a guanidine moiety in their side chain. The derivatives were synthesized through modification at the oxygenated carbon C-3/C-7 and at the carbonyl carbon C-24/C-21. The reactions showed yields ranging from 40 % to 96 %. The structures of all compounds obtained were identified on the basis of their spectral data (IR, MS, 1D- and 2D-NMR). The activity of bile acids, trametenolic acid and derivatives was evaluated against the growth of S. aureus, B. subtilis and M. smegmatis. The derivative 3α-hydroxy-23-guanidino-5β-cholane showed the best activity, with MIC values of 12.5 μM against S. aureus, 5 μM against B. subtilis and 50 μM against M. smegmatis. The cytotoxic activity of bile acids, trametenolic acid and derivatives was also evaluated against HT-29 cell line.
Cholane and Lanostane Derivatives: Antimicrobial Evaluation / Cateni, F.; Zacchigna, M.; Procida, G.; Zilic, J.; Cordone, Angelina; Zanfardino, Anna; Varcamonti, Mario. - In: CHEMISTRYSELECT. - ISSN 2365-6549. - 1:15(2016), pp. 4856-4860. [10.1002/slct.201600556]
Cholane and Lanostane Derivatives: Antimicrobial Evaluation
CORDONE, ANGELINA;ZANFARDINO, ANNA;VARCAMONTI, MARIO
2016
Abstract
Bile acids lithocholic acid (LCA) and ursodeoxycholic acid (UDCA) together with trametenolic acid (TMA) were used as starting materials for the preparation of new derivatives bearing a guanidine moiety in their side chain. The derivatives were synthesized through modification at the oxygenated carbon C-3/C-7 and at the carbonyl carbon C-24/C-21. The reactions showed yields ranging from 40 % to 96 %. The structures of all compounds obtained were identified on the basis of their spectral data (IR, MS, 1D- and 2D-NMR). The activity of bile acids, trametenolic acid and derivatives was evaluated against the growth of S. aureus, B. subtilis and M. smegmatis. The derivative 3α-hydroxy-23-guanidino-5β-cholane showed the best activity, with MIC values of 12.5 μM against S. aureus, 5 μM against B. subtilis and 50 μM against M. smegmatis. The cytotoxic activity of bile acids, trametenolic acid and derivatives was also evaluated against HT-29 cell line.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.