5. Which two D-pentose sugars give optically active alditols when reduced with NaBH4 CHO HOH CH2OH...
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5. Which two D-pentose sugars give optically active alditols when reduced with NaBH4 CHO HOH CH2OH D-glyceraldehyde. CHO CHO H HOH Н он ČH2OH D-erythrose HO H HHOH ČH2OH D-threose CHO CHO CHO CHO -O- HO H H -OH но- -HO- H HOH но -H но- - HFOH CH2OH H- -HO- H FOH H -OH ČH2OH ČH2OH CH2OH D-ribose D-arabinose D-xylose D-lyxose CHO HO-H CHO CHO CHO CHO Сно CHO CHO H FOH HO-H H FOH HO-H H FOH H OH HO-H H OH H- -O- HO H но- H -OH H- OH но -H но но —н HO-H HHOH ČH2OH HOH H +OH CH2OH H -OH -OH H FOH H -OH но HHOH ČH2OH H- -HO- H -O- H- -OH H FOH -OH ČH2OH ĆH2OH ČH2OH CH2OH ČH2OH D-allose D-altose D-glucose D-mannose D-gulose D-idose D-galactose D-talose 5. Which two D-pentose sugars give optically active alditols when reduced with NaBH4 CHO HOH CH2OH D-glyceraldehyde. CHO CHO H HOH Н он ČH2OH D-erythrose HO H HHOH ČH2OH D-threose CHO CHO CHO CHO -O- HO H H -OH но- -HO- H HOH но -H но- - HFOH CH2OH H- -HO- H FOH H -OH ČH2OH ČH2OH CH2OH D-ribose D-arabinose D-xylose D-lyxose CHO HO-H CHO CHO CHO CHO Сно CHO CHO H FOH HO-H H FOH HO-H H FOH H OH HO-H H OH H- -O- HO H но- H -OH H- OH но -H но но —н HO-H HHOH ČH2OH HOH H +OH CH2OH H -OH -OH H FOH H -OH но HHOH ČH2OH H- -HO- H -O- H- -OH H FOH -OH ČH2OH ĆH2OH ČH2OH CH2OH ČH2OH D-allose D-altose D-glucose D-mannose D-gulose D-idose D-galactose D-talose
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