Solenopsins A, B and C have been synthesized in enantiomericallypure forms from the corresponding anti-1,5-diols which have been obtained from glutaric anhydride by an asymmetric synthesis induced by chiral sulfoxides.
Asymmetric Induction via an Intramolecular Haloetherification Reaction of Chiral Ene Acetals: A Novel Approach to Optically Active 1,4- and 1,5-Diols
作者:Hiromichi Fujioka、Hidetoshi Kitagawa、Yasushi Nagatomi、Yasuyuki Kita
DOI:10.1021/jo960714l
日期:1996.1.1
An asymmetric synthesis of chiral 1,4- and 1,5-diols has been developed from the ene acetals 1a and 1c, prepared from the corresponding aldehydes and chiral C(2)-symmetric diols, involving remote asymmetric induction as a key step. In the first step, treatment of 1 with I(coll)(2)ClO(4) in the presence of an alcohol afforded the macrocyclic acetals (3-5 and 7) in a highly stereoselective manner. Subsequent