NOVEL 4,5-DIHYDROISOXAZOLYLALKYLPIPERAZINE DERIVATIVES HAVING SELECTIVE BIOLOGICAL ACTIVITY AT DOPAMINE D3 AND D4 RECEPTORS, AND PREPARATION THEREOF

• Main Authors: KO, HUN YEONG, JUNG, DAE YEONG, LEE, HUI YUN, BAE, AE NIM, JUNG, JI YEONG, KONG, JAE YANG, JUNG, SEON HO, CHO, YONG SEO, CHOI, GYEONG IL
• Format: Patent
• Language: English; Korean
• Published: 10.06.2002
• Edition: 7
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC CHEMISTRY; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS

PURPOSE: Provided are novel 4,5-dihydroisoxazolylalkylpiperazine derivatives having selective biological activity to dopamine D3 and D4 receptors, and their preparation method by reductive amination in the presence of reductant. CONSTITUTION: 4,5-dihydroisoxazolylalkylpiperazine derivative is represented by the formula(1), wherein R1, R2, R3, R4 and R5 are identical or different from each other, and represents individually hydrogen atom, halogen atom, C1-C6 alkyl group, C1-C6 alkoxy group, C2-C6 alkenyl group, hydroxy group , hydroxymethyl group, aryl group, heteroaryl group, amino group, C1-C6 alkyl amino group, carbonyl group, C3-C8 cycloalkyl group, or C3-C8 heterocyclic group; R6 represents hydrogen atom, halogen atom, alkyl group, C1-C6 alkoxy group, aryl group, pyridyl group, heterocyclic group or pyrimidyl group; X represents CH or nitrogen atom; and n is 3 or 4.