P. T. Dao, D. T. Mai Huong, L. T. Phuong, C. V. Minh and P. V. Cuong, Synthesis of 8-methyl-2-O-methyl-3,5-O-(1-methyl ethylidene)-6,7,8,9-tetradeoxy-D-gulo-6-nonenonic acid (6E)- -lactone, VJChem 53 (2015). DOI: https://doi.org/10.15625/6890.