One-pot efficient synthesis of 13(R),14(R)-epoxy-17β-methyl-20(S)-hydroxyl-18-nor-pregna-4-en-3-one via a tandem epoxidation-rearrangement-epoxidation reaction sequence
摘要:
One-pot synthesis of an 18-norsteroid compound, 13(R),14(R)-epoxy-17 beta-methyl-20(S)-hydroxyl-18-nor-pregna-4-en-3-one has been achieved with peracetic acid/acetic acid under a mild condition, via a proved tandem epoxidation-rearrangement-epoxidation sequence. Its structure was designated on the basis of NMR and X-ray crystallography data. (C) 2013 Elsevier Ltd. All rights reserved.