Reductions par les hydrures et hydroboration etude de la stereoselectivite de nouvelles voies d'acces aux 3-arylmethyl-4-chromanols (Homoisoflavanols)
作者:Michel Gomis、B. Serge Kirkiacharian
DOI:10.1016/s0040-4020(01)89754-4
日期:1990.1
The reduction of 3-arylmethyl-4-chromanones by sodium borohydride, lithium tri-tert-butoxyaluminum hydride and hydroboration followed by oxydation of 3-benzyl-4-hydroxy-coumarines lead to mixtures of Cis and Trans diastereoisomers of 3-arylmethyl-4-chromanols (homoisoflavanols). The reduction of 3-arylmethyl-4-chroma- nones by diborane or bis-tert-butylthioethane diborane (BTED) is stereoselective