, , ( ) , 1. , .
.
2.
. CH2OH- HCOH - HOCH HCOH HCOH -CH2OH,
3. .,
47) . , (), ). ́ , , . . , . , , . - 1. ( ) : (C6H10O5)n,. ( ), . ( ) , .,
48) . .
.
.
1. .
1. . .
2.
2NH3+Cl-CH2-COOH→Y2N-CH2-COOH+NH4Cl
3. .
4. .
()
R-CHNH2-COOH
.
. .
- , . . , , .