Polysaccharides
Polysaccharide is a polymeric carbohydrate formed by multiple monosaccharide molecules linked by glycosidic bonds, and is composed of at least one monosaccharide. Polysaccharide is not a pure chemical substance, but a mixture of substances with different polymerization degrees. It is usually insoluble in water, has no sweet taste, cannot form crystals, and has no reducing and mutarotation phenomena. Polysaccharides have significant biological activities in anti-tumor, anti-inflammatory, anti-viral, hypoglycemic, anti-aging, anti-coagulation and immune promotion.
Technical Resources
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Catalytic asymmetric Friedel–Crafts alkylation of unprotected indoles with nitroalkenes using a novel chiralChiral chloro-indeno pybox has served as a new ligand for the Yb(OTf)3-catalyzed asymmetric Friedel–Crafts alkylation reaction of indoles with nitroalkenes. The tunable nature of pybox ligands
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2Catalytic asymmetric Friedel–Crafts alkylation of unprotected indoles with nitroalkenes using a novel chiral
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3Catalytic asymmetric Friedel–Crafts alkylation of unprotected indoles with nitroalkenes using a novel chiral
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4Catalytic asymmetric Friedel–Crafts alkylation of unprotected indoles with nitroalkenes using a novel chiral
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5Catalytic asymmetric Friedel–Crafts alkylation of unprotected indoles with nitroalkenes using a novel chiral