Anomeric oxyacetamide assisted site-selective C-2 arylation and its application in / glycosylation of 2,3 eno-pyranoside.

Herein we developed a palladium-catalyzed coupling of 2,3-enopyranose with arylboronic acid using a removable oxyacetamide directing group, which provides an efficient method for the synthesis of C-2 aryl sugars. The synthesized products were subsequently utilized as glycosyl donors in / glycosylation, enabling regio- and stereoselective production of 1,2-disubstituted branched sugars.

Synthesis of aryl enopyranones directly from glycals and aromatic halides to access 2-deoxy-β-C-aryl glycosides.

An efficient synthesis of aryl enopyranones an oxidative Heck-type coupling reaction between ether protected D/L-glycals and different aryl halides is developed. This one-step method attaches an aryl group at the C-1 position keeping the C-1/C-2 double bond intact the Saegusa-Ito type oxidation, thus facilitating the synthesis of medicinally important 2-deoxy-β-aryl-C-glycosides after Pd/C reduction.

Spatio-temporal variation of land use and land cover changes and their impact on land surface temperature: A case of Kutupalong Refugee Camp, Bangladesh.

Environmental degradation can be predicted and managed in a sustainable manner by the perodic analysis of the Land Use/Land Cover (LULC) change pattern, which not only helps to revitalize the environment but also helps to improve future land-use policies. With the Rohingya influx in 2017, the Kutupalong Mega Camp area in Bangladesh is at a severe risk of environmental degradation as the area is experiencing remarkable LULC change. The aim of this research is to illustrate the LULC change in the Kutupalong Mega Camp before and after the refugee influx, as well as its impact on the surrounding environment because of this change.