2006 Oct 10
Modification at the C9 position of the marine natural product isoaaptamine and the impact on HIV-1, mycobacterial, and tumor cell activity.
Gul W, Hammond NL , Yousaf M ,Bowling JJ ,Schinazi RF ,Wirtz SS ,de Castro Andrews G, Cuevas C ,Hamann MT .
Department of Pharmacognosy and the National Center for Natural Products Research (NCNPR), University of Mississippi School of Pharmacy, MS 38677, USA.
As part of an investigation to generate optimized drug leads from marine natural pharmacophores for the treatment of neoplastic and infectious diseases, a series of novel isoaaptamine analogs were prepared by coupling acyl halides to the C9 position of isoaaptamine (2) isolated from the Aaptos sponge. This library of new semisynthetic products was evaluated for biological activity against HIV-1, Mtb, AIDS-OI, tropical parasitic diseases, and cancer. Compound 4 showed potent activity against HIV-1 (EC(50) 0.47mug/mL), compound 19 proved to possess remarkable activity against Mycobacterium intracellulare with an IC(50) and MIC value of 0.15 and 0.31mug/mL, while compounds 4 and 17 possessed anti-leishmanial activity with IC(50) values of 0.1 and 0.4mug/mL, respectively. Compounds 16 and 17 showed antimalarial activity with EC(50) values of 230 and 240ng/mL, respectively, and compound 14 exhibited an EC(50) of 0.05muM against the Leukemia cell line K-562.
PharmaMar Recibe el Ok de la FDA Para Iniciar Fase I con PM54 en Combi con Inmuno Para Posible Tratamiento . PARA EI RELEVO DE LURBINECTEDIN ESTABAN PM184 Y PM14 AMBOS RETIRADOS POR LA CIA. AHORA HAY OTROS DOS FÁRMACOS EN FASE I EN EL INTENTO DE RELEVAR A LURBINECTEDIN : PM54 Y PM534 ... EL PROBLEMA ES QUE AMBOS AÚN ESTAN EN FASE I CON TODO LO QUE ESTO IMPLICA EN CUESTIÓN DE PLAZOS ... YA QUE PARA REALUZAR 3 FASES CLÍNICAS HACEN FALTA DE 12 A 15 AÑOS ... NOS IRÍAMOS AL 2040.