HCID 44584063, compound → Azadirachtin

Participants

Reaction Steps

Govindachari, Sandhya and Ganeshraj (Govindachari, T. R., Sandhya, G, and Ganeshraj, S. P., Chromatographia, 31, 303, 1991) have prepared azadirachtin A involving the following steps; (1), defatting of powdered neem seed kernels (1 kg.) with hexane (31.); (2), extraction of defatted powdered neem kernels with refluxing 95% ethanol (a), (1 1.) and (b), (0.5 1.), (3), partition of ethanol concentrate (95 g.) obtained after removal of solvent from combined ethanol extract dissolved in 90% methanol with petroleum ether (100 ml.) thrice; (4), treatment of residue after removal of solvent from methanol extract from step 3, with ethylacetate; (5), washing of ethylacetate extract with water to remove proteins, carbohydrates; (6), removal of solvent from ethylacetate extract to give azadirachtin (25%, 24.5 g.); (7), preparative HPLC of azadirachtin (25%, 4 g.) on RP 18 column to give azadirachtin A+D (340 mg.); (8), preparative HPLC of azadirachtin A+D to give azadirachtin A (160 mg.).

Provenance & Evidence