Question
Which of the following aldohexoses give the same osazone derivative?
Which of the following aldohexoses give the same osazone derivative?
A.
I and IV
B.
I and III
C.
II and III
D.
III and IV
Answer :
I and III
Solution :
Structure I and II have different configurations at centres $$C{\text{ - }}1$$ and $$C{\text{ - 2}}$$ and identical configuration at $$C{\text{ - 3,}}\,C{\text{ - 4}}$$ and $$C{\text{ - 5}}$$ hence, gives same osazone.
Structure I and II have different configurations at centres $$C{\text{ - }}1$$ and $$C{\text{ - 2}}$$ and identical configuration at $$C{\text{ - 3,}}\,C{\text{ - 4}}$$ and $$C{\text{ - 5}}$$ hence, gives same osazone.
