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Acemannan
Acemannan is a D-isomer mucopolysaccharide in aloe vera leaves. This compound has been known to have immunostimulant,〔(【引用サイトリンク】title=Pharmacodynamic Basis of Herbal Medicine, Second Edition )〕 antiviral, antineoplastic and gastrointestinal properties. == Chemical structure and properties == Acemannan's monomer is mannoacetate linked by β-1,4-glycosidic bonds.〔http://chemdb.niaid.nih.gov/struct_search/class/class_many.asp?class=GLYCOSYLATION%20INHIBITORS〕〔(【引用サイトリンク】title=Acemannan Immunostimulant )〕 This polymer is hydrophilic: It has 50 hydrogen bond acceptors, 19 hydrogen bond donors, and a partition coefficient of -3.27. Therefore, its permeability (and, hence, bioavailability) has been scored to be 1 according to Lipinsky's Rule of Five.〔http://chemdb.niaid.nih.gov/struct_search/help/lipinski.htm〕
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