Derivatives of gamma-cyclodextrin
First Claim
Patent Images
1. A γ
- -cyclodextrin ether or mixed ether wherein the ether substituents are C1 -C6 alkyl, hydroxy C1 -C6 alkyl, carboxy C1 -C6 -alkyl or (C1 -C6 alkyloxycarbonyl) C1 -C6 alkyl;
provided that hydroxypropyl is not a sole substituent.
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Reexamination
Accused Products
Abstract
This invention relates to γ-cyclodextrin ethers and mixed ethers wherein the ether substituents are C1 -C6 alkyl, hydroxy C1 -C6 alkyl, carboxy C1 -C6 alkyl or (C1 -C6 alkyloxycarbonyl) C1 -C6 alkyl; provided that hydroxypropyl is not a sole substituent.
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Citations
17 Claims
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1. A γ
- -cyclodextrin ether or mixed ether wherein the ether substituents are C1 -C6 alkyl, hydroxy C1 -C6 alkyl, carboxy C1 -C6 -alkyl or (C1 -C6 alkyloxycarbonyl) C1 -C6 alkyl;
provided that hydroxypropyl is not a sole substituent. - View Dependent Claims (2, 3, 8, 9, 10, 11, 12, 13, 14)
- -cyclodextrin ether or mixed ether wherein the ether substituents are C1 -C6 alkyl, hydroxy C1 -C6 alkyl, carboxy C1 -C6 -alkyl or (C1 -C6 alkyloxycarbonyl) C1 -C6 alkyl;
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4. A γ
- -cyclodextrin ether or mixed ether wherein the ether substituents are C1 -C3 alkyl, hydroxy C2 -C4 alkyl or carboxy C1 -C2 alkyl and wherein the degree of substitution is in the range of 0.125 to 3 and the average molar substitution is in the range of 0.125 to 10.
- View Dependent Claims (5)
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6. A γ
- -cyclodextrin ether or mixed ether wherein the ether substituents are methyl, ethyl, isopropyl, hydroxyethyl, hydroxypropyl, hydroxybutyl, carboxymethyl or carboxyethyl and wherein the degree of substitution is in the range of 0.125 to 3 and the average molar substitution is in the range of 0.125 to 10.
- View Dependent Claims (7)
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15. A γ
- -cyclodextrin ether or mixed ether wherein the ether substituents are C1 -C6 alkyl, hydroxy C1 -C2 alkyl, hydroxy C4 -C6 alkyl, carboxy C1 -C6 alkyl or (C1 -C6 alkoxy carbonyl) C1 -C6 alkyl.
- View Dependent Claims (16, 17)
Specification