公开(公告)号：US20220184081A1

公开(公告)日：2022-06-16

申请号：US17430557

申请日：2020-02-12

Applicant: KAGOSHIMA UNIVERSITY

Inventor： Takashi KURIHARA ,  lchiro TAKASAKl ,  Naoki TOYOOKA ,  Hiroaki GOUDA

IPC: A61K31/519 ,  A61K31/4178 ,  A61P17/04

Abstract: This invention relates to an antipruritic agent of formula (I) or (II), wherein R1 is a hydrogen atom, a C1-6-alkyl group, a C1-6-alkoxy group, a C2-6-alkenyloxy group, a halogen atom, a C1-6-haloalkyl group, a C1-6-haloalkoxy group, or a substituted or unsubstituted phenyl group; R2 is a hydrogen atom, a C1-6-alkyl group, a C1-6-alkoxy group, a C2-6-alkenyloxy group, a halogen atom, a C1-6-haloalkyl group, a C1-6-haloalkoxy group, or a substituted or unsubstituted phenyl group; and R is an indazolyl group substituted with a halogen atom; a substituted or unsubstituted phenyl group; a pyrazolyl group; or a substituted or unsubstituted aralkyl group; or a salt thereof, or a solvate thereof.