Enantiomeric β-angelica lactone epoxides: their syntheses from suitable chiral precursors and their use in the preparation of blastmycinone
作者:Rosa M. Ortuño、Daniel Alonso、Jaume Cardellach、Josep Font
DOI:10.1016/s0040-4020(01)86801-0
日期:1987.1
Syntheses of (S)-β-angelica lactone from L-tartaric acid and (R)-γ-hydroxy-methyl-γ-butyrolactone, 5, are reported. Alternative routes to prepare 5 from S- and R-glutamic acids and D-ribonolactone, respectively, are also presented. Epoxides derived from (R)- and (S)-β-angelica lactones have been obtained and their use in the synthesis of both (+)- and (-)-blastmycinone, 24, has been established.
报道了由L-酒石酸和(R)-γ-羟基-甲基-γ-丁内酯5合成(S)-β-当归内酯。还提出了分别由S-,R-谷氨酸和D-核糖内酯制备5的替代方法。已经获得了衍生自(R)-和(S)-β-当归内酯的环氧化物,并且已经确定了它们在合成(+)-和(-)-blastmycinone(24)中的用途。