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US 5,633,368 AGranted
Partially acylated .beta.-cyclodextrins
AssigneeConsortium f ur elektrochemische Industrie GmbH
InventorRolf Hirsenkorn
Life of this patent
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Abstract
Partially acylated cyclodextrins of the formula I ##STR1## where R denotes hydrogen or R1, wherein R1 can be identical or different and denotes acetyl, propionyl, butyryl, 2-alkoxyacetyl, 2-chloroacetyl, 2-fluoroacetyl, 2-N-acetylaminoacetyl, methacryloyl or acryloyl, and the DS for R1, measured by means of .sup.1 H NMR spectroscopy, is between 0.30 and 1.20; and a process for preparing partially acylated .beta.-cyclodextrins and also a process for their use.
Claims8
A mixture of acylated cyclodextrins of formula I:
- ##STR3## wherein R denotes hydrogen or R1, wherein R1 can be identical or different and denotes acetyl, propionyl, butyryl, 2-alkoxyacetyl, 2-chloroacetyl, 2-fluoroacetyl, 2-N-acetylaminoacetyl, methacryloyl, or acryloyl, and the degree of substitution (DS) for R1, measured by means of .sup.1 H nuclear magnetic resonance (NMR) spectroscopy, is between 0.8 and 1.20,
- wherein the hydroxyl groups in the 6-position of the glucoses are less than 85% substituted, and
- wherein the seven glucopyranose rings of formula (I) need not be identically substituted.
Dependencies are inferred from the claim text.