糖苷键的立体选择性合成是寡糖合成的主要挑战。C2酰基取代基的邻近基团参与(NGP)可用于提供1,2-反式-糖苷。最近,随着C2手性助剂的出现,NGP的应用已扩展到1,2-顺式糖苷的制备。但是,这种方法严格限于合成1,2-顺式葡萄糖型糖。本文报道了新型甘露糖基供体的设计和合成,该供体通过NGP硫醚助剂提供1,2-顺式-甘露糖苷。设计中的关键要素是使用1 C 4锁定甘露糖醛酸内酯,以使C2助剂具有NGP。除了C2参与外,还确定了C4苄基的一种新的远程参与模式,并提供了1,2-顺式甘露糖苷。
[EN] 3'-KETOGLYCOSIDE COMPOUND FOR THE SLOW RELEASE OF A VOLATILE ALCOHOL<br/>[FR] COMPOSÉ 3'-CÉTOGLYCOSIDE POUR LA LIBÉRATION LENTE D'UN ALCOOL VOLATIL
申请人:GLYCOSCIENCE S L
公开号:WO2021160670A1
公开(公告)日:2021-08-19
The present invention relates to a 3'-ketoglycoside compound defined by formula (I) and its use for controlled release of alcohols, in particular alcohols showing an insect repellent effect. It relates also to a process for preparing the 3'-ketoglycoside compound of formula (I). It further relates to a composition comprising a 3'- ketoglycoside compound of formula (I). It relates also to the use of a 3'-ketoglycoside compound of formula (I) for the controlled release of alcohols. It related also to a method of use of such composition.
3'-KETOGLYCOSIDE COMPOUND FOR THE SLOW RELEASE OF A VOLATILE ALCOHOL
申请人:Glycoscience, S.L.
公开号:EP4103576A1
公开(公告)日:2022-12-21
RESIN COMPOSITION AND MOLDED ARTICLE
申请人:FUJIFILM Corporation
公开号:US20140058022A1
公开(公告)日:2014-02-27
A cellulose acetate resin composition having a cellulose acetate ether compound and a stabilizer;
the cellulose acetate ether compound comprising a specific atomic group, the specific atomic group being introduced into a cellulose acetate through an ether group derived from a hydroxyl group, the specific atomic group being introduced with a substitution degree of 0.01 or more; the cellulose acetate comprising residual hydroxyl group in a substitution degree of 0.3 to 1.0,
the stabilizer being at least one selected from the group consisting of a phosphite compound, a hindered phenol compound, a hindered amine compound, and a sulfur compound.