JCGGDB TOP Glycan Syntheses

Reaction

JCGG ID
JCGG-RAC0001069
Submitter
The Noguchi Institute
Reaction ID
R-0000-001076
Regist Date
2012/06/21 16:37:55
REACTANT
MOLECULE ID
JCGG-COM0001196 (Reaction Tree)
Reactant Type
azeotropically dried thioglycoside
Mol
0.241 mmol
MOLECULE ID
JCGG-COM0001194 (Reaction Tree)
Reactant Type
lactal
Mol
0.135 mmol
MOLECULE ID
JCGG-COM0001173
Reactant Type
di-tert-butylpyridine
Mol
0.484 mmol
MOLECULE ID
JCGG-COM0000741
Reactant Type
MeOTf
Mol
0.963 mmol
PRODUCT
MOLECULE ID
JCGG-COM0001197 (Reaction Tree)
Yield
70%
REACTION DETAIL
Reaction Time
10 minutes, 6 hours
Reaction Temp
room temp, -40 degree C to room temp
Solvent
CH2Cl2/Et2O = 3mL/6mL, CH2Cl2/Et2O = 3mL/6mL
Comment
1) 47+43, MS 4A, di-tert-butylpyridine, 2) +MeOTf
MS 4A was included in the solvent.
The reactants were mixed at -40 degree in Celsius, and allowed to warm to room temperature slowly within the reaction time. (second phase)
COMMENT
ATTENTION: There are numerical discrepancies between the scheme and the written method. (the number of % yield)
There might be a typo in Supporting Info. (1,4-di-tert-butylpyridine should be 2,6-di-tert-butylpyridine)
There are two phases in this reaction.
REFERENCE
Reference Id
REF-0000-000048
Issn
Print
PubMed ID
11273599
Journal Name
Journal of the American Chemical Society. (2001) 123 (1): 35-48.
Article Title
Total syntheses of tumor-related antigens N3: probing the feasibility limits of the glycal assembly method.
Author
H M, Kim; I J, Kim; S J, Danishefsky
Affiliation
Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Ave., New York, New York 10021, USA.
Reference Id
REF-0000-000049
Source
J. Am. Chem. Soc. 2001, 123, 35-48
Doi
10.1021/ja0022730

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