Abstract
High performance liquid chromatography (HPLC) packed with β-cyclodextrin
columns eluted by reversed phase or fluorous phase shows excellent
discrimination of fluorous tags. β-Cyclodextrin columns
are superior to fluorous silica gel columns in view of efficient
separation of compounds bearing short (CF3 ) to long (C9 F19 )
tag.
Key words
β-cyclodextrin - chromatography - separation
technique - combinatorial chemistry - fluorine chemistry
References
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6 SUMICHIRAL OA-7000 series are sold
by Sumika Chemical Analysis Service. Catalog about SUMICHIRAL OA-7000
series: Welcome to SUMICHIRAL OA third edition. URL: http://www.scas.co.jp/.
7 SUMICHIRAL OA-7000 is the column with
unmodified β-CD bonded to the silica gel via saccharide
(glucuroyl gluconoyl group) spacer; SUMICHIRAL OA-7100 is the column
with unmodified β-CD bonded to the silica gel via alkyl
group spacer; SUMICHIRAL OA-7500 is the column with β-CD,
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8 Fluorinated sulfonamides (PhSO2 NHCH2 Cn Fn+1 ,
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9 Retention time of esters 1a -c was
as follows; 1a : 19.1 min, 1b :
28.6 min, 1c : 39.2 min.
10 Retention time of sulfonates 2a -e with
OA-7100 was as follows; 2a : 23.1 min, 2b : 16.9 min, 2c :
14.3 min, 2d : 10.8 min, 2e :
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12 ZEORORA-H is 1,1,2,2,3,3,4-heptafluorocyclopentane
and sold by ZEON CORPORATION. URL of ZEON CORPORATION: http://www.zeon.co.jp/.