作者:Lisa M. Doyle、Shane O’Sullivan、Claudia Di Salvo、Michelle McKinney、Patrick McArdle、Paul V. Murphy
DOI:10.1021/acs.orglett.7b02760
日期:2017.11.3
Glycosyl thiols are widely used in stereoselective S-glycoside synthesis. Their epimerization from 1,2-trans to 1,2-cis thiols (e.g., equatorial to axial epimerization in thioglucopyranose) was attained using TiCl4, while SnCl4 promoted their axial-to-equatorial epimerization. The method included application for stereoselective β-d-manno- and β-l-rhamnopyranosyl thiol formation. Complex formation explains
Synthesis and studies of acetylthioglycoside conjugates of 4-chloro-1,2-dithiole-3-thione as potential antitumor agents
作者:S. N. Fedorov、A. S. Kuzmich、Yu. E. Sabutskii、A. G. Guzii、R. S. Popov、V. A. Ogurtsov、O. A. Rakitin、S. G. Polonik
DOI:10.1007/s11172-021-3127-1
日期:2021.3
THP-1 human leukemia cells in soft agar, as well as to inhibit the AP-1-dependent transcriptional activity in JB6 Cl41 luc-AP-1 cells, which suggests the possibility of using the new compounds as potential cancer preventive drugs.
在4,5-二氯-1,2-二硫-3-硫酮与per-氯原子的亲核取代ö的乙酰基-1- mercaptho衍生物d葡萄糖,ð半乳糖,d甘露糖,d木糖,升-阿拉伯糖和d-麦芽糖产生了六种新的4-氯-1,2-二硫代-3-硫酮乙酰硫代糖苷共轭物。这些硫糖苷对软琼脂中的JB6 Cl41 P +小鼠表皮细胞和THP-1人白血病细胞模型具有抗癌活性,并抑制JB6 Cl41 luc-AP中AP-1依赖性转录活性。 -1细胞,这表明使用新化合物作为潜在的癌症预防药物的可能性。
Catalytic Glycosylation with Glycosyl Thioimidate Donors
of glycosylthioimidates, glycosyl N-phenyl-trifluorothioacetimidates, were prepared from the readily available glycosyl thiols in excellent yields. These imidates exhibited very good donor properties under the action of catalytic amounts of BF3·Et2O, and the corresponding glycosidation products were formed in very good to excellent yields. Thus, the first catalyticglycosylations with glycosyl thioimidate