Sipholenone A

White to off-white lyophilized powder. Soluble in DMSO or 100% ethanol (25mg/ml). Efficient inhibitor of P-glycoprotein (Pgp, MDR-1) function through direct interactions. By inhibiting MDR-1, active compounds remain in the cytoplasm longer and allowing them to be more effective within the cell, Reversing agent for the treatment of multidrug resistance (MDR) in Pgp-overexpressing tumors. Potentiates the cytotoxicity of established Pgp substrates such as colchicine, vinblastine and paclitaxel, Antiproliferative, antiangiogenic and cytotoxic compound, Moderate antifouling compound.