I would like to know what is the optimize ethanolic solution for extracting the Phenantroindolizidine from natural sources, e.g. Ficus sp or tylophora?
But, I dont think that the MeOHCH2Cl2-aqueous NH3 (50:50:1) would be the best solvent. The extraction result of the crude extract is only: 119 g from 1 kg raw material.
I just want to know whether there are someones else that doing the same study, so that I need not to do the replication on the same subject. Make the unifying, save the time and energy, right!