Thaum lub molecule xws li qabzib hloov mus rau hauv daim ntawv cyclic, nws tsim ib lub chaw tshiab chiral ntawm C-1. Cov pa roj carbon atom uas tsim cov chaw tshiab chiral (C-1) hu ua anomeric carbon. … Piv txwv li, α-D-glucose thiab β-D-glucose yog anomers.
Dab tsi yog ob qho anomers ntawm qabzib?
Lub hemiacetal carbon atom (C-1) dhau los ua qhov chaw tshiab stereogenic, feem ntau hu ua cov pa roj carbon monoxide, thiab the α thiab β-isomers yog hu ua anomers. Tam sim no peb tuaj yeem xav txog yuav ua li cas qhov kev hloov pauv ntawm cov qauv piam thaj no rau cov lus tsis txaus ntseeg tau sau tseg saum toj no.
Anomers nrog piv txwv yog dab tsi?
Anomers yog cyclic monosaccharides lossis glycosides uas yog epimers, sib txawv ntawm ib leeg hauv kev teeb tsa ntawm C-1 yog tias lawv yog aldoses lossis hauv kev teeb tsa ntawm C-2 yog tias lawv yog ketoses. … Piv txwv 1: α-D-Glucopyranose thiab β-D-glucopyranose yog anomers.
Puas muaj pes tsawg anomers qabzib?
Tus ob tus anomers sib npaug hauv cov tshuaj aqueous, txheej txheem hu ua mutarotation. Cov txheej txheem yog catalyzed los ntawm acid, txij li thaum hemiacetal tsim yog catalyzed los ntawm acid. D-Glucose yog qhov tseem ceeb tshaj plaws carbohydrate nyob rau hauv mammalian metabolism.
Dab tsi yog ob hom anomers?
Muaj 2 hom anomers, uas yog alpha thiab beta. Lawv raug txheeb xyuas los ntawm cov kev taw qhia uas pawg -OH taw qhia rau thawj cov pa roj carbon (C1) ntawm cov piam thaj cyclic. Yog li ntawd, carbonhu ua anomeric carbon. Ib qho alpha-glucose muaj nws -OH perpendicular rau lub nplhaib.
