Synthesis of the Phosphoramidite Units for Benzene-Glycol Nucleic Acid.

Benzene-glycol nucleic acid-DNA chimeras form thermally and thermodynamically stable duplexes with complementary RNAs, and have base-discriminating abilities. This unit describes the synthesis of four nucleoside analogs, an adenine, cytosine, thymine, and guanine analogs with base-benzene-glycol structure. The synthesis starts with conversion of (S)-mandelic acid in arylboronic acid derivative, common intermediate. Nucleobase coupling of the intermediate and phosphitylation afford to phosphoroamidite units. © 2017 by John Wiley & Sons, Inc.