A Novel Stereoselective Total Synthesis of (+)‐5‐epi‐Cytoxazone
摘要:
Stereoselective synthesis of a potent cytokine modulator cytoxazone isomer has been achieved from 2,3-O-isopropylidene D-glyceraldehyde involving Grignard reaction, subsequent formation of an azide followed by reduction to the aminodiol, and finally cyclization of the N-Boc diol.
A Novel Stereoselective Total Synthesis of (+)‐5‐epi‐Cytoxazone
摘要:
Stereoselective synthesis of a potent cytokine modulator cytoxazone isomer has been achieved from 2,3-O-isopropylidene D-glyceraldehyde involving Grignard reaction, subsequent formation of an azide followed by reduction to the aminodiol, and finally cyclization of the N-Boc diol.
Lithium tri-s-butylborohydride and lithiumaluminumhydride were found to be efficient reducingagents for the stereoselective preparation of syn-glycerol derivatives from (R)-4-acyl-2,2-dimethyl-1,3-dioxolanes. The scope and limitation of the stereoselective L-Selectride reduction of (R)-4-acyl-2,2-dimethyl-1,3-dioxolanes were also described.