ALKYL MONOGLUCOSIDES
Alkyl monoglucosides nwere otu D-glucose unit. Ihe owuwu mgbanaka ahụ bụ ụdị nke D-glucose nkeji. Ma mgbanaka ndị otu ise na isii nke gụnyere otu oxygen atom ka heteroatom na-ejikọta na sistemu furan ma ọ bụ pyran. Ya mere, a na-akpọ Alkyl D-glucosides nwere mgbanaka mmadụ ise alkyl d-glucofuranosides, na ndị nwere mgbanaka isii, alkyl D-glucopyranosides.
Ngalaba D-glucose niile na-egosi ọrụ acetal nke atom carbon bụ naanị nke a ga-ejikọta na atọm oxygen abụọ. A na-akpọ nke a anomeric carbon atom ma ọ bụ etiti anomeric. Ihe a na-akpọ njikọ glycosidic na ihe fọdụrụ na alkyl, yana njikọ ya na ikuku oxygen nke mgbanaka saccharide, sitere na carbon carbon anomeric. Maka ntụzịaka na yinye carbon, a na-agụ carbon carbon nke D-glucose nkeji na-aga n'ihu (C-1 ruo C-6) malite na carbon carbon anomeric. A na-agụ mkpụrụ ikuku oxygen dị ka ọnọdụ ha dị na yinye (O-1 ruo O-6). Atọm carbon anomeric na-anọchi anya asymmetrically ma nwee ike were nhazi abụọ dị iche iche. A na-akpọ stereoisomer ndị a na-esi na ya pụta anomers ma bụrụ ndị pụrụ iche site na prefix α ma ọ bụ β. Dị ka nkwekọrịta nomenclature anomers na-egosi na otu n'ime nhazi abụọ nwere ike ime nke njikọ glycosidic na-atụ aka nri na Fischer projection formulas nke glucosides. Kpọmkwem ihe dị iche bụ eziokwu maka ndị anomers.
Na nomenclature nke kemịkalụ carbohydrate, aha alkyl monoglucoside bụ nke a na-edepụta aha ya: Nhazi nke residue alkyl, nhazi nke anomeric, syllable "D-gluc," nhọpụta nke ụdị cyclic, na mgbakwunye nke njedebe " oside." Ebe mmeghachi omume kemịkalụ na saccharides na-emekarị na anomeric carbon atom ma ọ bụ ikuku oxygen nke ndị isi ma ọ bụ nke abụọ hydroxyl, nhazi nke carbon carbon asymmetrical anaghị agbanwe agbanwe, ma e wezụga na etiti anomeric. N'akụkụ a, nomenclature maka alkyl glucosides dị nnọọ irè, ebe ọ bụ na syllable "D-gluc" nke nne na nna saccharide D-glucose na-edobe n'ọnọdụ nke ọtụtụ ụdị mmeghachi omume na-emekarị na mgbanwe kemịkalụ nwere ike ịkọwa site na suffixes.
Ọ bụ ezie na usoro nke saccharide nomenclature nwere ike ịmepụta nke ọma dị ka usoro amụma Fischer si dị, a na-ahọrọ usoro Haworth nwere ihe ngosi cyclic nke eriri carbon dị ka usoro nhazi maka saccharides. Atụmanya Haworth na-enye echiche dị mma nke gbasara usoro ihe omimi nke D-glucose ma bụrụkwa nke a masịrị ya na akwụkwọ akụkọ a. Na usoro Haworth, a naghị ewepụtakarị atom hydrogen jikọtara na mgbanaka saccharide.
Oge nzipu: Jun-09-2021