Question

Are the following monosaccharides D or L?

1. Are the following monosaccharides D or L? CH2OH C -0 HOHO —OH HO | —H HO | _H -H HI-OH HI-OH HO 「H—OHH -OH HF -OH H- —OH -OH | HO —— HH- CH2OH CH2OH CH2OH of of m -OH H- CH2OH Answer:

Answer 1

1. Given that HO- HO H OH -OH HOH H- H OH A HLOH H OH -OH 애 HO IH CH₂014 CH₂OH CH₂OH CH₂OH Ho H- H c=0 H OH OH we have to predict the moun saccharides as Dop ho CH₂OH We know that the 'Don 'i nomenclature of the mono saccharédes are more on the fischer projection, if the ot goong on the second carbon from bottom in the right side than 'D' or in the left side the 'W - CHO HTOH As, 9 -OH group on the right side, so "D" Configuration H OH CH₂OH НО HO IH 애 As, the -OH groups on the right hand side , so "D" Configuration -OHT CH2OH

੯੦ HO- the As, the oth group group on on O I IZ -OH -OH i side, so Conf. left — 내 CH₂014 CH₂OH c=0 As, the - OH group on the right hand side, HOLH H L olt TH Olt so the "D" cough. CH₂OH
So, the monosaccharides are respectively D, D, L and D .