Synthesis 2018; 50(02): 282-294
DOI: 10.1055/s-0036-1590927
paper
© Georg Thieme Verlag Stuttgart · New York

α-Selective Glycosylation of 3,6-O-o-Xylylene-Bridged Glucosyl Fluoride

Autoren


MEXT supported the program for the Strategic Research Foundation at Private Universities (S1311046) and JSPS KAKENHI (Grant Numbers JP15K13650, JP16H01163 in Middle Molecular Strategy, and JP16KT0061) partly supported this work.
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Publikationsverlauf

Received: 10. August 2017

Accepted after revision: 12. September 2017

Publikationsdatum:
09. Oktober 2017 (online)


Graphical Abstract

Abstract

A 1,2-cis-(α)-selective glycosylation has been developed. An ortho-xylylene group bridged between 3-O and 6-O of d-glucosyl fluoride, which straddles the β-face of the pyranose ring, hinders the ­approach of glycosyl acceptors from that face. The determination of the three-dimensional structure of the bridged glucosyl fluoride, the optimization process of the reaction conditions oriented toward kinetic control to realize the high α-selectivity, and the scope of the reaction are described.

Supporting Information