T. Nagasaka, Hirotoshi Sato, S. Saeki
Jan 23, 1997
Citations
0
Influential Citations
16
Citations
Journal
Tetrahedron-asymmetry
Abstract
Abstract Racemic 1-azaspiro[4.4]nonane-2,6-dione 1 was easily synthesized from cyclopentanone in five steps and resolved via chiral acetals into enantiomers. Cephlotaxine (−)-3 and its enantiomer (+)-3 were obtained from (−)-1 and (+)-1, respectively, according to the literature.