Tn Antigen Mimics by Ring-Opening of Chiral Cyclic Sulfamidates with Carbohydrate C1-<i>S</i>- and C1-<i>O</i>-Nucleophiles
作者:Pablo Tovillas、Iván García、Paula Oroz、Nuria Mazo、Alberto Avenoza、Francisco Corzana、Gonzalo Jiménez-Osés、Jesús H. Busto、Jesús M. Peregrina
DOI:10.1021/acs.joc.7b03225
日期:2018.5.4
effectively accessible (S)-α-methylserine, enantiopure cyclic sulfamidates have been prepared as chiral building blocks for the synthesis of various S- and O-glycosylated amino acid derivatives, including unnatural variants of the Tn antigen, through highly chemo-, regio-, and stereoselective nucleophilic ring-opening reactions with carbohydrate C1-S- and C1-O-nucleophiles.
从可商购获得的(S)-异丝氨酸和有效可得的(S)-α-甲基丝氨酸开始,对映体纯的环状氨基磺酸盐已被制备为手性结构单元,用于合成各种S-和O-糖基化的氨基酸衍生物,包括非天然的S-异丝氨酸。 Tn抗原通过与碳水化合物C1- S-和C1- O-亲核试剂的高度化学,区域和立体选择性亲核开环反应而形成。