如何将透视式变成环状结构式： CHO H,OH H十OH CH2OH OH HO十H OH OH CHO H十OH CHO H十OH OH CH2OH OH CH2OH CH2OH D-构型的CH,OH向上 OH a-构型 阝-构型 Organic ChemOrganic Chem D-构型的CH2OH向上 如何将透视式变成环状结构式： + α-构型 β-构型 O OH OH OH OH CH2OH CHO OH OH OH OH CH2OH CHO CH2OH OH OH OH OH O OH OH OH OH CH2OH CHO H OH HO H H OH H OH CH2OH