USRE39308EExpiredUtility
3,5-dioxa-12-azawurtzitane compound and process of preparing same
Assignee: NAT INST OF SCIENCE AND TECHNOPriority: May 9, 2000Filed: May 7, 2004Granted: Sep 26, 2006
Est. expiryMay 9, 2020(expired)· nominal 20-yr term from priority
A61P 25/00C07D 498/22
51
PatentIndex Score
0
Cited by
9
References
3
Claims
Abstract
A 3,5-dioxa-12-azawurtzitane compound represented by the formula (I) shown in the specification. The dioxaazawurtzitane compound may be prepared by reacting an amino acid, an oligo- or polypeptide or a polyamino acid with a trialdehyde represented by formula (II) shown in the specification.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1. A 3,5-dioxa-12-azawurtzitane compound represented by the following formula (I):
wherein R 3 R 1 represents an alkyl group, R 2 is selected from the group consisting of hydrogen, the following members:
and said members substituted with one or more of alkyl, acetyl, alkoxy, benzoxycarbonyl, tert-butoxycarbonyl, 9-fluorenylmethoxycarbonyl, and 1,7,9-trialkyl-3,5-dioxa-12H-azawurtzitan-12-yl, and R 3 is selected from the group consisting of hydroxyl, oligopeptides, polypeptides, amino acids and polyamino acids, provided that where R 3 is an oligopeptide, polypeptide, amino acid or polyamino acid it is linked through a terminal amino group.
2. A process of preparing a 3,5-dioxa-12-azawurtzitane compound represented by the following formula (I):
wherein R 1 represents an alkyl group, R 2 is selected from the group consisting of hydrogen, the following members:
and said members substituted with one or more of alkyl, acetyl, alkoxy, benzoxycarbonyl, tert-butoxycarbonyl, 9-fluorenylmethoxycarbonyl and 1,7,9-trialkyl-3,5-dioxa-12H-azawurtzitan-12-yl, and R 3 is selected from the group consisting of hydroxyl, oligopeptides, polypeptides, amino acids and polyamino acids, provided that where R 3 is an oligopeptide, a polypeptide, an amino acid or a polyamino acid, it is linked through a terminal amino group, said process comprising reacting an amino acid, an oligo- or polypeptide or a polyamino acid with a trialdehyde represented by the following formula (II):
wherein R1 R 1 has the same meaning as above.
3. A process as claimed in claim 2 , comprising mixing an aqueous solution of said amino acid, an oligo- or polypeptide or a polyamino acid with an organic polar solvent solution of said trialdehyde, and reacting the resulting mixture at a temperature and for a period of time sufficient to obtain said 3,5-dioxa-12-azawurtzitane compound.Cited by (0)
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