Method for protecting guanidino group and restoring the same

Details Method for protecting guanidino group and restoring the same Method for protecting guanidino group and restoring the same

C - Chemistry, Metallurgy

07

K

530/15.12, 260/5

C07K 7/23 (2006.01) C07K 1/06 (2006.01)

Patent

CA 1177826

ABSTRACT OF THE DISCLOSURE A guanidino group in an amino acid or a peptide can be protected with a specific substituted benzenesulfonyl group, i.e. pentamethylbenzene- sulfonyl, 2,4,6-trimethoxybenzenesulfonyl, 4-methoxy-2,3,5,6-tetramethyl- benzenesulfonyl, 4-methoxy-2,6-dimethylbenzenesulfonyl or 4-methoxy-2,3,6- trimethylbenzenesulfonyl. Such group may easily be removed without affecting the amino acid or the peptide to be derived from the protected amino acid or peptide. Thus, the present invention is useful in the synthesis of peptides containing guanidino groups.

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