Pregna-3,6,20-trioxime and its analog,pregna-6,20-dione-3-oxime were synthesized from pregnenolone by the oxidation of PCC,reduction of NaBH4,oxidation of Jone’s agent and oximation in four-step reaction.Their struct...Pregna-3,6,20-trioxime and its analog,pregna-6,20-dione-3-oxime were synthesized from pregnenolone by the oxidation of PCC,reduction of NaBH4,oxidation of Jone’s agent and oximation in four-step reaction.Their structures were characterized by NMR and IR.展开更多
文摘Pregna-3,6,20-trioxime and its analog,pregna-6,20-dione-3-oxime were synthesized from pregnenolone by the oxidation of PCC,reduction of NaBH4,oxidation of Jone’s agent and oximation in four-step reaction.Their structures were characterized by NMR and IR.
