Sulfenic Acids in the Carbohydrate Field. Synthesis of Transient Glycosulfenic Acids and Their Addition to Unsaturated Acceptors
作者:Vincent Aucagne、Maria C. Aversa、Anna Barattucci、Paola Bonaccorsi、Placido Giannetto、Patrick Rollin、Arnaud Tatibouët
DOI:10.1021/jo025938k
日期:2002.10.1
method is described for building up anomeric glycosyl sulfoxides, via the formation of transient glycosulfenic acids and their addition to unsaturated acceptors. Thermolysis of alpha- and beta-3-[(2,3,4,6-tetra-O-acetyl-D-glucopyranosyl)sulfinyl]propanenitriles affords 1-glucosulfenic acids, which are reacted in situ with common substituted alkynes. The obtained (R(S),E)-2-[(2,3,4,6-tetra-O-acetyl-
描述了一种通过形成瞬时糖亚磺酸并将其添加到不饱和受体上来建立异头糖基亚砜的新方法。α-和β-3-[(2,3,4,6-四-O-乙酰基-D-吡喃葡萄糖基)亚磺酰基]亚丙基的热解提供了1-葡糖亚磺酸,其与常见的取代炔烃就地反应。所获得的(R(S),E)-2-[((2,3,4,6-四-O-乙酰基-α-D-吡喃葡萄糖基)亚磺酰基]亚磺酰基] -2-丁烯二酸酯作为对映体纯亚磺酰基二烯亲和物参与Diels-与2,3-二甲基-1,3-丁二烯进行Alder反应,以评估糖部分在环加成的空间控制中的作用。这种化学性质为硫糖苷元和糖苷元部分之间的立体控制连接提供了直接的合成策略,