Enzymatic Hydrolysis of meso(syn-syn)-1,3,5-Triacetoxy-2,4-dimethylpentane and Acetylation of meso(syn-syn)-3-Benzyloxy-2,4-dimethylpentane-1,5-diol by Lipase.
Four chiral synthons having three consecutive asymmetric centers for the synthesis of macrolide and polyether antibiotics were synthesized form D-glucose via stereoselective hydroboration.
Chiral synthesis of polyketide-derived natural products. Part 5. Synthesis of a chiral segment corresponding to the C-1—C-5 unit of erythromycin A from<scp>D</scp>-glucose
作者:Yuji Oikawa、Takao Nishi、Osamu Yonemitsu
DOI:10.1039/p19850000019
日期:——
As a right-hand segment with three consecutive chiral centres corresponding to the C-1—C-5unit of erythromycin A (1), (2S,3R,4S)-3,5-isopropylidenedioxy-2,4-dimethylpentanal (32) was synthesized from D-glucose (5) by application of MPM (4-methoxybenzyl) protection for an hydroxy function and some fairly stereoselective reactions, hydroboration and hydrogenation.
Acyclic stereoselection. 25. Stereoselective synthesis of the C-1 to C-7 moiety of erythronolide A
作者:Clayton H. Heathcock、Steven D. Young、James P. Hagen、Ronaldo Pilli、Ulrich Badertscher
DOI:10.1021/jo00212a018
日期:1985.6
Practical synthesis of diastereomerically and enantiomerically pure 2-methyl 1,3-diols from (R)-2,3,O-isopropylideneglyceraldehyde. Application to the C(1)-C(7) and C(9)-C(12) fragments of erythronolide B