Practical synthesis of all inositol stereoisomers from myo-inositol
作者:Sung-Kee Chung、Yong-Uk Kwon
DOI:10.1016/s0960-894x(99)00348-0
日期:1999.8
Synthesis of six inositol stereoisomers was successfully carried out via conduritol intermediates prepared from myo-inositol. Dihydroxylation and epoxidation followed by ring opening of the conduritol B, C and F derivatives gave epi-, allo-, muco-, neo-, DL-chiro- and scyllo-inositol. The cis-inositol derivative, which may not be prepared by this approach, was synthesized in 5 steps via 2-O-benzoyl-myo-inositol
Two synthetic routes towards the construction of the aminocyclohexitol moiety of hygromycin A have been developed based on palladium-catalyzed asymmetric alkylation of conduritol derivatives. A protocol has been established whereby this biologically relevant molecule is formed from benzoquinone. A conduritol A derivative is synthesized in eight steps from benzoquinone and is then subjected to the palladium
Diastereoselective Synthesis of D- and L-myo-Inositol 3,4,5,6-Tetrakisphosphates from D-Glucose via Dihydroxylation of (+)-Conduritol B Derivatives
作者:Shintaro Saito、Rumiko Shimazawa、Ryuichi Shirai
DOI:10.1248/cpb.52.727
日期:——
Syntheses of D- and L-myo-inositol 3,4,5,6-tetrakisphosphates were achieved via diastereoselective 1,2-addition of vinylcopper reagent with the chiral aldehyde prepared from 1,2,5,6-diisopropylidene-D-glucose, ring-closing metathesis of 1,7-diene with Grubbs catalyst followed by catalytic OsO(4) dihydroxylation of (+)-conduritol B derivatives.
A diastereocontrolled route to conduritols A-F has been developed starting from a commonchiralbuildingblock containing an oxabicyclo[3.2.1]octane framework.
Six possible diastereomers of conduritols have been synthesized diastereoselectively in an integrated manner starting from a single chiral precursor, which served as a synthetic equivalent of chiral cis-1,4-dihydroxycyclohexa-2,5-diene.