Synthesis of asymmetrically-substituted cyclopentane derivatives from acyclic sugars
作者:Derek Horton、Tomoya Machinami
DOI:10.1039/c39810000088
日期:——
Diels–Alder addition of cyclopentadiene and trans-α,β-unsaturated sugarderivatives proceeds with high steric control to afford crystalline, optically pure norbornene derivatives that may be transformed into tetra-C-substituted cyclopentanederivatives of defined stereochemistry at all four centres; the products are of interest in synthesis of prostaglandin analogues.
Stereochemical versatillity in synthesis of substituted cycloalkanes from acyclic unsaturated sugars
作者:Derek Horton、Tomoya Machinami、Yasushi Takagi、Carl W. Bergmann、Gary C. Christoph
DOI:10.1039/c39830001164
日期:——
Acyclic unsaturated sugars obtained by Wittig extension of aldehydo arabinose precursors undergo stereoselective Diels–Alder addition of cyclopentadiene, permitting isolation of a single, crystalline, opticallly pure norbornene adduct whose stereochemistry may be controlled by the enantiomeric form of the sugar used and the conditions of the cycloaddition reaction.