Purification of Subunit B of Shiga Toxin Using a ... - ACS Publications

Vince Pozsgay*, Loc Trinh, Joseph Shiloach, John B. Robbins, Arthur Donohue-Rolfe, and Stephen B. Calderwood. Bioconjugate Chem. , 1996, 7 (4), pp 523...
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Bioconjugate Chem. 1996, 7, 523

523

CORRECTIONS Volume 7, Number 1, January/February 1996.

Vince Pozsgay,* Loc Trinh, Joseph Shiloach, John B. Robbins, Arthur Donohue-Rolfe, and Stephen B. Calderwood PURIFICATION OF SUBUNIT B OF SHIGA TOXIN USING A SYNTHETIC TRISACCHARIDE-BASED AFFINITY MATRIX Page 52. There were several errors in Scheme 3. Scheme 3a Me Me

O CH2OTBDPS O SMe O OH 18

Me a

Me

O CH2OTBDPS O O SMe OBn 19

Me b

Me

O CH2OH O O OBn 20

c

SMe

HO CH2OH O SMe HO OBn 21

a

d

AcO CH2OAc O SMe AcO OBn 22

Abbreviations, reagents, and conditions: Ac ) acetyl, Bn ) benzyl, Me ) methyl, TBDPS ) tert-butyldiphenylsilyl; (a) 1.9 equiv of BnBr, DMF, NaH, 0 °C, 83%; (b) 0.7 equiv of Bu4NF, THF, 25 °C, 12 h, 97%; (c) AcOH-H2O, 80 °C, 2 h, 95%; (d) Ac2O, C5H5N, 0 °C, 1 h, 97%.

BC960192G

S1043-1802(96)00192-9 Not subject to U.S. Copyright. Published 1996 by American Chemical Society