Claims
- 1. A process for preparing a salt of an organic base and N,N'-diacetylcystine having the formula ##STR2## or a hydrate or a solvate thereof, wherein the organic base, R.sup.+ or R.sup.2+, is selected from lysinium, ethylenediaminium, N,N'-dibenzylethylenediaminium, N-benzyl-2-phenylethylaminium, piperazinium and 1-adamantanaminium,
- which comprises the steps of
- (a) reacting N,N'-diacetylcystine with the organic base or a salt containing the cation of the organic base by dissolving or dispersing the reactants in a solvent or a solvent mixture and
- (b) isolating the salt.
- 2. The process according to claim 1 wherein the organic base is lysinium.
- 3. The process according to claim 1 or 2, wherein the N,N'-diacetylcystine is in the form of its D-isomer, L-isomer, meso-form or racemic mixture.
Priority Claims (1)
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9103572 |
Nov 1991 |
SEX |
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Parent Case Info
This application is a divisional of application Ser. No. 08/335,941, filed on Nov. 8, 1994, which is a continuation of application Ser. No. 07/981,373, filed Nov. 25, 1992, issued as U.S. Pat. No. 5,383,904 on Jan. 31, 1995.
US Referenced Citations (11)
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Non-Patent Literature Citations (5)
Entry |
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Marshall, et al. "Preparation and Properties of the Isomeric Forms of Cystine and S-Benzylpenicillamine," J. Amer. Chem. Soc. 79: 4538-4544, 1957. |
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Divisions (1)
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335941 |
Nov 1994 |
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Continuations (1)
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981373 |
Nov 1992 |
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