1172-62-9Relevant academic research and scientific papers
Formamido and carboxyamido compounds which can be retained in brain
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, (2008/06/13)
According to the present invention, a novel compound group which can pass through blood-brain barrier (BBB) with carrying a drug thereon and stay within brain to release the drug and a well-known compound group having the properties described above are provided. The compound represented by the general formula STR1 wherein, R1 represents C1-6 alkyl which may be substituted by a group selected from hydroxyl, carboxyl, amino group which may be substituted by C1-6 alkyl, and a five- to seven-membered saturated heterocyclic ring, R2 represents hydrogen or C1-6 alkyl, R3 represents hydrogen or C1-6 alkyl which may be substituted by hydroxyl, R4 represents hydrogen or C1-6 alkyl, R5 represents an amino acid residue, or --S--R6 or --CO--R6 wherein R6 represents C1-14 alkyl which may be substituted by a five- to seven-membered saturated ring; C2-6 alkenyl; aryl; or a five- to seven-membered saturated ring; or the group represented by the general formula (IVa): STR2 wherein R1, R2, R3 and R4 have the same meanings as defined above, and ********* represents a single bond or a double bond provided that at least one of R1, R3 and R5 contains hydroxyl, carboxyl or amino, and a salt thereof.
