Biomedical Engineering Reference
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O
NH.HCI
OH
S
O
O
O
O
Chitosan-Thioethylamidine conjugate
HO
NH
HS
NH
2
+Cl-
O
NH
2
OH
O
O
SH
HO
O
HO
NH
EDC
Chitosan-Cysteine conjugate
HS
O
NH
2
O
OH
SH
O
HO
O
O
HO
NH
Chitosan-Thioglycolic acid conjugate
EDC
HS
O
OH
O
O
NH
S
Chitosan-4-Thiobutylamidine conjugate
O
HO
OH
NH
O
O
HS
O
NH
2
+Cl-
HO
NH
2
NH
CH
2
OH
CH
2
OH
O
O
COOH
O
OH
OH
HS
N
NH
2
NH
CO
N
SH
H
CH
2
OH
H
O
O
O
HO
N-acetyl cysteine
H
HN
H
H
O
O
HS
HN
CH
3
COOH
OCH
2
COOH
O
= CMC
β
-CD
O
NH
CO
CMC-g-
β
-CD
EDC/NHS
CMEH
COOCH
3
OCH
2
CONH-CH-CH
2
-SH
O
O
NH
CO
Thiolated CMC-g-
β
-CD
Thiolated CMCS-g-
β
-CD
Figure 2.17
Synthesis of thiolated chitosan.
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