Processes for the preparation of D-chiro-inositol
First Claim
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1. A method for the preparation of D-chiro-inositol from kasugamycin, comprising the steps of:
- (a) reacting kasugamycin with an acetylating agent in the presence of an acid-functionalized resin to form a crude hexa-acetate;
(b) purifying the crude hexa-acetate to form purified hexa-acetate;
(c) deacetylating the purified hexa-acetate to form D-chiro-inositol; and
(d) isolating the D-chiro-inositol.
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Abstract
A method for the preparation of D-chiro-inositol from kasugamycin, comprising the steps of: (a) reacting kasugamycin with an acetylating agent to form a crude hexa-acetate intermediate; (b) purifying the crude intermediate to form purified hexa-acetate intermediate; (c) deacetylating the purified intermediate to form D-chiro-inositol; and (d) isolating the D-chiro-inositol. The method permits efficient, large-scale preparation of D-chiro-inositol without the need for extensive chromatographic purification of the final D-chiro-inositol product.
9 Citations
53 Claims
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1. A method for the preparation of D-chiro-inositol from kasugamycin, comprising the steps of:
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(a) reacting kasugamycin with an acetylating agent in the presence of an acid-functionalized resin to form a crude hexa-acetate; (b) purifying the crude hexa-acetate to form purified hexa-acetate; (c) deacetylating the purified hexa-acetate to form D-chiro-inositol; and (d) isolating the D-chiro-inositol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for the preparation of D-chiro-inositol from kasugamycin, comprising:
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(a) reacting kasugamycin with an acetylating agent in the presence of an acid-functionalized resin to form a crude hexa-acetate mixture; (b) concentrating the crude hexa-acetate mixture; (c) extracting the crude hexa-acetate product with a solvent system; (d) washing the crude hexa-acetate with water; (e) concentrating the crude hexa-acetate solution to form a purified hexa-acetate; (f) deacetylating the purified hexa-acetate to form D-chiro-inositol; and (g) isolating the D-chiro-inositol. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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Specification