By a combination of stereospecific osmium catalyzed oxidation of dimethyl citraconate and lipase catalysed enantioselective resolution of the formed dimethyl (2R*,3S*)-2,3-dihydroxy-2-methylbutanedioate, followed by reduction, (2R,3S)- and (2S,3R)-2-methylbutane-1,2,3,4-tetraol were isolated. Similar reactions starting with dimethyl mesaconate gave the isomers, (2R,3R)- and (2S,3S)-2-methylbutane-1
Synthesis of 3-C-(hydroxymethyl)erythritol and 3-C-methylerythritol
作者:Zbigniew J. Witczak、Roy L. Whistler、James R. Daniel
DOI:10.1016/0008-6215(84)85201-5
日期:1984.10
3-C-(Hydroxymethyl)erythritol was prepared from 3-C-(hydroxymethyl)-2,3-O-isopropylidene-D-erythro-tetrofuranose (4) by hydrolysis followed by reduction, or by reduction followed by hydrolysis. Monotosylation of 4, followed by reduction with lithium aluminum hydride and hydrolysis, afforded 3-C-methylerythritol.
Development of a Compound-Specific Carbon Isotope Analysis Method for 2-Methyltetrols, Biomarkers for Secondary Organic Aerosols from Atmospheric Isoprene
target compounds with different stable carbonisotope compositions were then derivatized by methylboronic acid with a known δ13C value and measured by GC/C/IRMS. With δ13C values of 2-methyltetrols and methylboronic acid predetermined, isotopic fractionation is evaluated for the derivatization process. Through reduplicate δ13C measurements, the carbonisotope analysis achieved excellent reproducibility
已经通过气相色谱/燃烧/同位素比质谱法(GC / C / IRMS)确定了由异戊二烯在大气中形成的用于次级有机气溶胶的生物标记化合物2-甲基四醇的稳定碳同位素组成。在这项工作中,与各种δ异戊二烯13 C值被用于经由与过氧化氢在硫酸阳光直射下的氧化反应以产生2- methyltetrols。用不同的碳同位素组合物的目标化合物然后通过甲基硼酸与已知δ衍生13 C值,并通过GC / C / IRMS测定。用δ 13个2- methyltetrols和甲基硼酸预定C值,同位素分馏为衍生化过程进行评价。通过的菌种δ 13在碳测量中,碳同位素分析具有出色的重现性和高精度,平均误差<0.3‰。预测的和测量的δ之间的差13个C值范围从-0.10到0.29‰,表明衍生过程中不引入同位素分馏。的δ 13 2- methyltetrols C值可能会之间2- methyltetrols化学计量质量平衡方程,甲基
Incorporation of 2-C-Methyl-d-erythritol, a Putative Isoprenoid Precursor in the Mevalonate-Independent Pathway, into Ubiquinone and Menaquinone of Escherichia coli
Incorporation of deuterium labelled 2-C-methyl-D-erythritol into isoprenoid side-chains of ubiquinone and menaquinone from Escherichia coli strongly supports the proposed intermediate role of this branched sugar derivative in the mevalonate independent pathway for isoprenoid biosynthesis via glyceraldehyde 3-phosphate and pyruvate. (C) 1997 Published by Elsevier Science Ltd.
Anthonsen,T. et al., Acta chemica Scandinavica. Series B: Organic chemistry and biochemistry, 1976, vol. 30, p. 91 - 93